Mastering Technology

Why People Use Diesel

2010-01-25T07:27:00.000-08:00

With diesel engines, the compression ratio is higher and there is more power. From a technical point, the compression ratio of an engine is the comparison of the total volume of the cylinder at the bottom of the piston's stroke divided by the volume of the cylinder
remaining at the top of the stroke.

Gasoline ratios

Serious damage to gas engines can occur if you attempt to run a high compression ratio with a low octane type of fuel. Detonation is the ignition of the fuel due to the high temperature caused by a high compression ratio that is developed by design. The fuel is ignited prior to the spark of the plugs that result in a rapid, yet uncontrolled burning.

Diesel ratios

Keep in mind, the diesel is a heat engine, using heat developed from the compression of air. High compression ratios are possible since the air is compressed. The hot compressed air is sufficient to ignite the diesel fuel when it's finally injected near the top of the compression stroke.

Diesel engines

Fuel and air in the design of diesel engines are not premixed outside of the cylinder. Air is taken into the cylinder through the intake valve and then compressed to make heat. The diesel fuel is injected near the top of the piston's stroke in an amount or ratio that corresponds to the load on the engine.

Heavy duty
The higher compression ratio causes engineers to design, and test the block, heads, head bolts, crackshaft, connecting rods, rod bolts, pistons, piston pins, etc., with a greater range of structural capacity. To put it in other terms, diesels are heavier than gasoline engines.

Gasoline Deciding on gas and diesel can be tough, although there are several reasons why you should use diesel.

Diesel engines produce twice the power per gallon of fuel than gasoline.

A gallon of diesel is normally cheaper than a gallon of gas.

Diesel fuel doesn't blow up. The fact is, its hard to get diesel to burn at all.

Diesel engines will last four times longer than gasoline engines.

Diesel fuel that is untreated will last longer in storage than untreated gasoline.

Treated diesel fuel will last longer in storage than treated gasoline.

Diesel fuel treatment will cost less than gas treatment.

Spoiled diesel can be reconditioned to refinery specifications, as spoiled gas can't.

Unmodified diesel engines can be ran on vegetable oil.

General Information On Diesel Engines

2010-01-19T12:22:00.001-08:00

Diesel engines offer the lowest specific fuel usage of any other large internal combustion engine. The fact remains, two-stroke diesels with high pressure forced induction, particularly turbo charging, make up a large percentage of the largest diesel engines.

Throughout North America, diesel engines are generally used in larger trucks, where the low stress, high efficiency cycle will lead to a much longer engine life and lower costs to operate. These advantages also help to make the diesel engine ideal for use in the heavy haul industry.

Cars however, continue to use gasoline, primarily due to the consumer desire for a wider range of RPM. In Europe, the use of diesel engines with cars is far more common.

Even though diesel engines are more efficient when throttled down, they aren't suitable for most types of aircraft. The higher compression ratios of the diesel cycle demand a much stronger block, head, and almost all moving parts in general. These stronger parts add a lot of weight, or a lot of expense, especially if lighter alloys are being used.

The Otto cycle engines are much cheaper to build for these reasons, although they have long been overtaken by the turbine engines. For the same displacement of the engine, Otto cycles will produce more actual power than a diesel cycle can, because the fuel will burn at a much faster rate, allowing more power strokes per minute than a standard diesel can offer.

What this means, is that less fuel has to be carried. Additionally, commercial aircraft is normally run at preset limits, so that Otto cycle engines used in aircraft don't suffer anywhere near the efficiency penalties that land vehicles do. Heavy equipment, such as those used in mining and construction, almost always uses diesel engines.

diesel engines are also used with submarines. In these types of submarines, the diesel engine is run when the submarine is on the surface, which charges the batteries that power the submarine once it is submerged.

All across the world, diesel engines serve many different purposes. They are used with almost all types of heavy machinery, and other vehicles. Gas isn't the way to go with heavy machinery, as the engines simply can't withstand the beating.

diesel has been popular for many years with machinery and submarines, simply because the engines can last for years and years. Although they won't offer as much speed as gasoline, the torque and power is still there.

Cell Phones. Do You Really Want to be Available All The Time?

2009-12-29T19:28:00.000-08:00

Do you really want to be available for anyone and everyone on a 24/7 basis? What do I mean? A famous person once said that the more available you make yourself; the more available everyone will expect you to be. People will actually be annoyed if you are not instantly and constantly available rather than being pleased when you do call. People expecting you to be available all the time may be annoying. Cell phone calls follow you everywhere you are including your bathroom. Even during nighttime when you want to rest, cell phones continue to ring and annoy you. If it is important, no problem but if it is very menial, why you need to be bothered so late.

Today in this modern society, we live in and the proliferation of cell phones we see people talking anywhere and everywhere. If used for business, this may prove to be very effective and worthy. However, for very menial issues being bothered in your sleep and even during your bathroom time may be quite annoying if not outright disgusting. However, if you make yourself available all the time, you created your own nightmare.

Cell phone etiquette is getting to be a forgotten concept. You will see people talking on the phone loudly and disturbs people nearby in restaurants and even in offices. I am sure by now, once or twice in a meeting you will notice that when a cell phone rings, almost everyone around will immediately look for their cell phones. If you were the one talking, and then the person in front of you talks on his phone, how would you feel? I am sure you will feel belittled and ignored. Rude practice, and should be changed.

It may help people who use cell phones to follow certain degree of etiquette with respect to the use of cell phones specially in places where you may seem rude if you use or even when your cell phone rings.

When you are in a place of worship, it may be necessary to leave your cell phone in the house or at least turn it off if you do not want to be away with it. This is because ringing cell phone will not just disturb you while you pray it will also disturb others. You do not need to show off your expensive gadget in a place of worship.

During meetings, please turn off your cell phone; it is rude to have your phone ringing while somebody speaks. Disruption may cause problems especially when the meeting tackles extremely important issues. However, if you are waiting for terribly important call, you may use the vibrate mode of your cell phone to alert you when a call is in-coming and leave the meeting if you need to answer the call. You may also inform the possible caller that you are in a meeting and that you cannot be disturbed.

When traveling and if you are on-board an aircraft, you will be required to turn off your phone. This is because electronics devices may interfere with the aircraft’s avionics. Thus, it is a requirement to turn of your phone for safety reasons. However, for extremely long flights, airline companies allow cell phone usage at a certain time, if you really need to make a phone call, use this time allotted if necessary.

Cell phone have become to be a necessity nowadays, that is why most people use it and cell phone manufacturers have continuously develop different usage and functions for this very small gadget. Be globally competitive, but you should understand that being rude is not part of modernity. Follow certain degree of etiquette; this will be very helpful to you and your business.

Basic Components for a Home Theater

2009-12-25T17:04:00.000-08:00

Many people never bother looking into purchasing a home theater through sheer fear of the decisions that may need to be made in the process. Many among these aren't even sure of exactly which components are included in a home theater or which ones are needed in order to create an effective and entertaining home theater. For this reason, many people simply do not bother going through the process of looking at their options when it comes to these wonderful systems on the market today much less ever bother actually purchasing one.

If you are one of the many who has experienced some degree of confusion when it comes to the individual parts and pieces that are included in a home theater system and what they do, hopefully you will gain a better understanding once you've finished reading. The first thing to understand is that there are varying degrees when it comes to home theaters. The following components are the makings of a very basic home theater that will provide excellent functionality. They are not however inclusive of every possible piece or part that could make up a home theater system.

Off to the basics, the first thing you'll need when creating a home theater for your family to enjoy is a television. It might seem a little too obvious to some but I have yet to find a box kit that includes a television-mainly because the choice of screen is for many the most personal aspect of selecting a home theater. There are essentially three choices in today's television market: front projector, rear projector, and plasma. There are variations within each of these and the prices fall anywhere from modest to quite costly. This is the component that most home theater owners spend the most time contemplating and it affects the types of components that will be most effective later on in terms of things such as high definition and other choices you can make.

A receiver is another important component. You will probably have a DVD player or recorder of some sort as part of your system; you may have a Tivo and cable box or satellite and will probably have speakers of some sort for your system. The receiver is the box you plug them all into-it receives all of this inputs and correlates it so to speak. This is the ultimate traffic director when it comes to your home theater and I suggest you spend a good portion of your home theater budget making sure that this is a good quality part.

Speakers are where your sound will flow. One of the best things to me about a home theater is the ability to experience surround sound very similar to what I experience in theaters while having the ability to put my feet up or snuggle under blankets (which simply can't be achieved in a theater). Speakers come in all shapes and sizes and are also quite personal for some consumers while give and take for others. You can purchase these are part of a kit in order to make the selection process easier.

Finally, you have your DVD player or recorder. If high definition is important to you, you now have that option. If your television isn't HD ready or capable, I'd pass and go for an older (less expensive) model of DVD player until something more up-to-date is called for. These items are a great start for any home theater and you can build, expand, and upgrade over time for an even better system. Enjoy!

The technology behind satellite radio

2009-12-22T11:16:00.000-08:00

Any song you hear on satellite radio stars as a recording in a specific format on different recording mediums. IN most cases, the recording quality has to be maintained fairly high, usually around 384kb/s, while also being reasonably small enough to be transported on CDs and DVDs. The music tracks used in satellite radio are cataloged using a similar system to the MP3 cataloging criteria, the ID3 tags. The choice for the music tracks that will be played is made by each channel individually. The DJ selecting the tracks usually chooses about 20-30 minutes worth of music. The DJ has to listen to the tracks to make sure they are in proper condition and then simply lets the computer decode the original file. The same thing is repeated once the initial 20-30 minutes are exhausted and the music playing cycle repeats itself.

Sound encoding in satellite radio

Encoding is one of the key elements of digital radio. Each channel is handled by a different encoder. The encoder basically takes the analog file and turns it into a digital one. The digitalization process is made in real time and the music files are transformed into 1's and 0's. This process is carried out by powerful computers that analyze sound waves and frequency and break them into binary code. The encoding process is carried out at 128kb/s, 44.1Kh which is actually CD quality. After the song is encoded, it is transmitted to a multiplexer where other channels are also present – the multiplexer basically takes all the channels of the satellite radio provider and combines them into a single broadcast transmission. The data is then sent to a satellite modem device which modulates the data and sends it to the broadcaster’s satellites, using unique transmission frequencies.

What happens above the Earth

Here is where the satellites are located. They receive the transmission and transmit it to the receivers we have in our homes and cars. The satellites are located at 23,000 miles above us – both Sirius and XM Radio use satellites located at this distance from the Earth. The satellites are located in geo-sync, which means that hey orbit above the location they are designated to service at all times. When the satellite receives the transmission encoded at 128kb/s, 44.1 khz it rebroadcasts it to the geographical area it covers. Both Sirius and XM Radio use satellites that cover certain areas of the United states – mostly the East and West coasts. For example, one of XM Radio’s satellites covers the western part of USA, probably an area located roughly from Seattle to San Diego on the West and Minneapolis to Houston on the east. The increased sound quality is possible because the broadcasted data (music tracks, news, sports transmission) don’t get sliced up too many times in the decoding process.

The antenna

The antenna connected to your satellite radio receiver picks up the transmission on L-Band. The recent technological advances have allowed digital radio broadcasters to create receivers small enough to fit mobile locations. In the early days of satellite radio, a large parabolic dish would have to be mounted on the car in order to receive signal. Also, before the more compact receivers were created, the early satellite radio receivers needed electronic movements that directed the dish towards the satellite line of sight. Modern flat panel receivers have eliminated all the problems of their predecessors and can be fitted almost anywhere without taking up too much space.

The receiver and the output

The receiver is the device that decodes the data, basically doing the exact opposite of what the encoding process was like. After receiving the signal from the antenna it amplifies it and converts it to usable sound. The car or home audio system is then able to play the selected satellite radio channel. The rest of the process is exactly like analog broadcasts would work, with an amplifier and speakers outputting the sound.

Radio Controlled Hobbies. A Technological History

2009-12-22T11:15:00.001-08:00

You push a lever on your remote, and your remote control plane veers to the left. It almost seems like magic. Radio control is one of the most magical inventions of the modern era. It has a very long and intriguing history.

Linguistic research into the origins of the word radio reveals that it was from the prefix “radio-“meaning concerned with radiations. The word radio came into being before Hertz’s discovering of electromagnetic radiations. Initially what was radio-telegraphy and radio-telephony over time came to be just radio. One of the first people to popularize the term was another pioneer in America in the field of wireless transmission: Dee Forest.

Tesla demonstrated wireless telegraphy in 1893 almost eight years after the discovery of the electromagnetic waves by Hertz. Jagdish Chandra Bose in 1894 used electromagnetic waves to ignite gun powder and strike a gong in Calcutta (Now Kolkatta) in India. That possibly was the dawn of wireless/radio communications and its applications in science. Tesla in 1896 transmitted wireless signals for nearly 30 miles distance and patented his first four tuned circuit wireless system as being the first practical wireless transmission equipment. Marconi in 1899 spanned the English channel with this wireless transmission.

The dawn of the new century also was the beginning of a new era when Marconi performed the first trans-Atlantic radio signal in 12th December, 1901. The crystal sets which were patented by J.C. Bose came to be commonly used for detecting and receiving radio signals. There have been numerous disputes over who exactly was the first to conceive the idea or wireless transmission, Tesla or Marconi. In between somewhere there is one Popov who was also a pioneer in this field! Tesla is said to have run into financial troubles that greatly limited his run in the race. But nevertheless, Tesla seems to have been the first, but the controversy over this is not our concern now. Whoever it was, the truth stands is that it was one of the finest inventions in the history of science.

The first decade of the century saw many entrepreneurs and experimenters working with wireless radio but it was about at the near end of the first decade that definite hobby interests sparked. Radio signals were originally produced by spark transmitters, which were noisy and inefficient. Then the alternator-transmitter and then the arc-transmitter came into being.

The invention of vacuum-tude diodes and triodes revolutionized the radio transmission and receivers. The invention of triode amplifier generators made audio possible and started a new era of “audio radio”. The vacuum tubes were the staple component for a long time until the invention of the transistor which made the equipment more precise, concise and efficiently mobile!

Then, AT&T used the vacuum tubes to transmit voices over phone lines and this lead to the experimenting of speeches over long distances for audience to hear over loudspeakers. Commercialization was thought about from the initial days but there was no way to restrict the transmission to specific paid users and broadcasting remained commercial-free. Then AT&T started the idea of advertising to finance the programming, and it is here to stay until this very date. There have been constant innovations in the field of radio broadcasting with the latest craze being internet radio. So, radio is NEVER out of date but it is forever coming in new forms.

5 Ways Auto Navigation Systems and GPS Technology Improve Lives

2009-12-22T11:12:00.000-08:00

Global positioning technology is used in most of today's GPS and auto navigation systems. The truth of the matter is that this technology while once reserved for the wealthy is now trickling into mainstream America. We are seeing this technology in cell phones in order to assist with 911 calls. We are seeing this technology in automobiles in order to track and possibly retrieve them if they are stolen. We are also seeing this technology used to help lost animals find their way back to the homes of their families. The truth of the matter is that there are many ways in which GPS technology is currently making our lives easier.

Below you will find a great number of uses for GPS and auto navigation system technology that currently exist. Even more amazing is the fact that new discoveries for these technologies are being made every day and over time there will be an even greater variety of methods to utilize this technology for the benefit of society.

1) Keep track of teens and children by using services such as uLocate Communications. This technology allows you to track members of your family by their cell phones. With the click of a button on your cell phone or simply tracking from home via the Internet you can find all members of your family that are carrying their cell phones. The benefits of this feature to your peace of mind alone are well worth the monthly subscription fee, which can be as low of $4 a month depending on which service you choose.

2) Keeping track of the elderly. This is especially useful if you have a loved one that suffers from Alzheimer's or some other form of dementia. Technologies are improving continuously and will hopefully reach a point very soon where ID bracelets much like the medic alert bracelets will allow GPS tracking that is even more reliable for the elderly. The relief of knowing that you can find your loved one even if he or she has wondered off and forgotten how to get home is something that you really can't put a price tag on.

3) Lost pets. I mentioned this earlier but it is worth repeating. The technology exists to have your pets implanted with chips or even to have chips placed in collars that allow you to readily locate your precious pet without spending endless hours of searching and whistling. The real beauty of this is that you won't have to spend hours comforting sad children; you can take them to the computer and let them help you track Fido.

4) Finding shortcuts along your route to work, job interviews, important meetings, conventions, and personal appointments. This is great if you are running into a time crunch or worse need an alternate route as the result of a traffic jam or road closure.

5) GPS technology allows security and safety in many cars that utilize On Star technology as well. This technology cannot only track the location of your car but also be used to call for help in emergency situations. This device is activated by the push of a button and can even be used by small children in emergency situations.

There are many great ways that GPS and auto navigation systems and technology are being used each and every day to improve our lives and provide peace of mind. The methods mentioned above are simply icing on the cake.

"Bluetooth" Advantages And Disadvantages

2009-12-09T05:58:00.000-08:00

Bluetooth has a lot to offer with an increasingly difficult market place. Bluetooth helps to bring with it the promise of freedom from the cables and simplicity in networking that has yet to be matched by LAN (Local Area Network).

In the key marketplace, of wireless and handheld devices, the closest competitor to Bluetooth is infrared. Infrared holds many key features, although the line of sight it provides doesn't go through walls or through obstacles like that of the Bluetooth technology.

Unlike infrared, Bluetooth isn't a line of sight and it provides ranges of up to 100 meters. Bluetooth is also low power and low processing with an overhead protocol. What this means, is that it's ideal for integration into small battery powered devices. To put it short, the applications with Bluetooth are virtually endless.

Disadvantages

Bluetooth has several positive features and one would be extremely hard pressed to find downsides when given the current competition. The only real downsides are the data rate and security. Infrared can have data rates of up to 4 MBps, which provides very fast rates for data transfer, while Bluetooth only offers 1 MBps.

For this very reason, infrared has yet to be dispensed with completely and is considered by many to be the complimentary technology to that of Bluetooth. Infrared has inherent security due to its line of sight.

The greater range and radio frequency (RF) of Bluetooth make it much more open to interception and attack. For this reason, security is a very key aspect to the Bluetooth specification.

Although there are very few disadvantages, Bluetooth still remains the best for short range wireless technology. Those who have tried it love it, and they know for a fact that Bluetooth will be around for years to come.

Key Learning Points Of Bluetooth

2009-12-09T05:52:00.000-08:00

Bluetooth is easily the best in wireless handheld technology. When it comes to learning, Bluetooth can get quite complicated. To help you, you'll find the key learning points of Bluetooth below:

Bluetooth is an energy efficient, low overhead communication protocol that's ideal for interdevice communications.

Unlike infrared, Bluetooth doesn't require a line of sight.

Depending on the implementation, Bluetooth can have a range of up to 100 meters.

The specification of Bluetooth consists of a Foundation Profile Document and a Foundation Core Document.

The protocol stack for Bluetooth consists of core protocols, cable protocols, and even adapted protocols.

The transmitter operates around the 2.4 GHz frequency band.

The data channel will change frequency, or hops, 1,600 times in a second, between the 79 allocated channels in the ISM band.

Bluetooth utilizes a spread spectrum frequency hopping RF characteristic to ensure that independant networking operates when the other devices are in range.

A piconet is formed when one or more devices open up a channel of communication.

A piconet can have a master and up to seven slaves.

Communication of the interdevice is based on the concepts of channels.

All Bluetooth devices are capable of transmitting voice.

The channel has a total capacity of 1 MB per second.

There are two types of channels with Bluetooth - SCO (Synchronous Connection Oriented) and ACL (Asynchronous Connectionless).

The SCO channels are time oriented, and are therefore primarily used for transferring time critical data such as voice.

ACL channels are normally used for communicating data.

Data contained in a packet can be up to 2,745 bits in length.

In a single piconet, there can be up to three SCO links containing 64,000 bits a second each.

To avoid collision and timing problems, SCO links are reserved slots that are set up by the master.

The masters can support up to three SCO links with either one, two, or three slaves.

The slots that aren't reserved for SCO links can be used as ACL links.

The LMP (Link Management Protocol) will handle link level security, error corrections, and the establishment of communications links.

The LMP packets will have priority over user packets that originate and form the L2CAP layer.

The L2CAP layer will ensure an acceptable quality of service.

No more than one ACL link can exist at the L2CAP layer.

Using Bluetooth

2009-12-09T05:51:00.000-08:00

The amazing technology of Bluetooth presents a great way of exchanging data between two wireless devices. Unlike telephones, there are no wires or messy leads to worry about. You can enjoy wireless communications with short distances of up to thirty feet.

Bluetooth also offers interoperability, meaning that you can use your portable Bluetooth device to connect with existing Bluetooth points. This way, you won't have to carry a data lead or CDs of drivers around with you everywhere you go. You can enjoy the best of wireless without having to worry about installing your software.

With today's Bluetooth, you can use your PDA and cell phone to surf the net or check emails as you travel. If you are in the business field, this can be very beneficial, especially if you like to check your email throughout the day. Bluetooth will enable you to check your email no matter where you are - which is great news for those who like to travel.

Bluetooth will also enable to you to transfer files as well, such as MP3 and photo to and from your mobile device. Bluetooth dominates the world of short range wireless, enabling you to do more than you may have thought possible.

One of the best things to Bluetooth and something everyone loves is the wireless headset. Bluetooth offers wire free headsets for your cell phone or computer, which is great for those who like to walk around or talk on the phone in the car, without having to worry about your hands getting in the way.

To make things even better, you can use a Bluetooth GPS device for satellite navigation on your PDA, laptop, or mobile. If you travel - this can be really great to have.

Jobs in Alternative Energy Fields

2009-12-09T05:49:00.000-08:00

Many people who take jobs in the alternative energies research and development sector have to, at least in the beginning, take relatively low pay. Taking a job in this industry is thus not about—or, not predominantly about—making money, although that is needless to say important, as one who is not well-fed soon becomes one who is not productive at work, especially when we are considering the brain-work involved in the work of researching and developing technologies in the alternative energies sector. There are those who take a job just because they find it is a fulfilling task that they have undertaken—something that is going to help mankind, or their society, or the Earth herself. But in truth, what most people dream of in terms of work is a position that they at once enjoy immensely while they also are receiving good money for their time and energy.

Positions in the alternative energy research and development industry often offer just such an opportunity.

The alternative energy field is in need of a vast array of different positions. Many people who get into this are the kind who would keep the power plants up and running (these include plant operators or mechanics), others are the developers of new alternative energies (engineers, scientists), and others make it all happen to start with by investing in alternative energy. So--not only do these people have the blessing of an exciting and fulfilling career, but these same people are making the world a better place.

The business of alternative energy is rapidly growing due to the fact that many governments are now supporting it. Investors have become excited about putting their financial backing into the alternative energy industry because they can see that it's the wave of the future, out of both need and the fact of government support. Rising oil prices make alternative energies' tantalization rise in the minds of investors. As investors become more interested, there is more money available for companies to start up or expand, and that leads (of course) to more job opportunities.

The US government is unquestionably involved in promoting the idea of new jobs as being readily available in the alternative energy sector. According to the President, in order to achieve greater use of “homegrown”, renewable fuels in the United States, advanced technologies need to be researched and developed so as to be able to make ethanol from plant fibers' biomass, which at the present time is merely discarded as waste material. The President's 2007 Federal Budget includes $150 million (a $59 million increase over the Federal Budget for 2006) to help with the development of biofuels derived from agricultural waste products such as wood chips, corn stalks, and switch grass. Researchers tell us that furthering the cause of research into cellulose-based ethanol could make the technology cost-competitive by 2012, while potentially displacing up to 30% of the nation's current fuel consumption.

The President's plan would additionally drive on next-generation research and development of battery technology for hybrid vehicles in addition to “plug-in hybrid” vehicles. A “plug-in” hybrid runs on either gasoline or electricity, depending upon an on-board computer calculation. Driving in a city setting consumes almost no gasoline over as much as a week's time with these vehicles.

What is Alternative Energy

2009-12-09T05:47:00.000-08:00

There is a lot of energy that we can harness if we only seek to research and develop the technologies needed to do so. We can get away from the fossil fuels and the old electrical grids by turning to alternatives to these energy sources.

One of these alternative energy resources is wind power. Wind turbines continue to be developed that are progressively more energy efficient and less costly. “Wind farms” have been springing up in many nations, and they have even become more strategically placed over time so that they are not jeopardizing birds as former wind turbines did.

Another alternative energy resource is the one that is most well known: solar energy. This involves the manufacturing of solar cells which gather and focus the energy given off directly by the sun, and translate it into electricity or, in some cases, hot water. As with wind energy, solar energy creates absolutely zero pollution.

Ocean wave energy is seen by governments and investors as having enormous energy generating potential. A generator in France has been in operation for many years now and is considered to be a great success, and the Irish and Scots are running experimental facilities.

Hydroelectric power has been with us for a while and where it is set up, it is a powerful generator of electricity and cleaner than a grid. However, there are certain limitations to the availability of the right places to set up a large dam. Many run-of-the-river, or small and localized, hydroelectric generators have been set up in recent times due to this limitation.

Geothermal energy is extremely abundant, since it lies directly beneath our feet, just a few miles below the earth's surface. This energy is produced by the heating of water through the actions of earth's fantastically hot molten core. The water turns to steam, which can be harnessed and used to drive turbine engines which in turn generate electricity. Great amounts of research and development should be put into geothermal energy tapping.

Waste gas energies, which are essentially methane, reverse the usual energy-pollution relationship by creating energy from waste that lies in the dumps and from some air pollutants. This gas is used in fuel cells and can be used in standard gasoline generators.

Ethanol is a gasoline substitute and is created from such things as wheat, sugarcane, grapes, strawberries, corn, and even wood chips and wood cellulose. There is controversy over this fuel with regards to its ever becoming truly economical or practical except in very localized areas, but technologies for its extraction and admixturing are continuously being refined.

Biodiesel energy is created out of the oils contained in plants. So far, the commercial stores of biodiesel have been created using soybean, rapeseed, and sunflower oils. At the time of this writing, biodiesel is typically produced by entrepreneurial minded individuals or those who want to experiment with alternative energy, but commercial interest from companies is on the rise. It burns much cleaner than oil-based diesel.

Atomic energy is created in atomic energy plants using the process of nuclear fission. This energy is extremely efficient and can generate huge amounts of power. There is concern from some people about what to do with the relatively small amount of waste product atomic energy gives off, since it is radioactive and takes hundreds of years to decay into harmlessness.

Renewable Fuels for Alternative Energy

2009-12-09T05:46:00.002-08:00

The Germans have really taken off when it comes to renewable fuel sources, and have become one of the major players in the alternative energy game. Under the aegis of the nation's electricity feed laws, the German people set a world record in 2006 by investing over $10 billion (US) in research, development, and implementation of wind turbines, biogas power plants, and solar collection cells. Germany's “feed laws” permit the German homeowners to connect to an electrical grid through some source of renewable energy and then sell back to the power company any excess energy produced at retail prices. This economic incentive has catapulted Germany into the number-one position among all nations with regards to the number of operational solar arrays, biogas plants, and wind turbines. The 50-terawatt hours of electricity produced by these renewable energy sources account for 10% of all of Germany's energy production per year. In 2006 alone, Germany installed 100,000 solar energy collection systems.

Over in the US, the BP corporation has established an Energy Biosciences Institute (EBI) to spearhead extensive new research and development efforts into clean burning renewable energy sources, most prominently biofuels for ground vehicles. BP's investment comes to $50 million (US) per year over the course of the next decade. This EBI will be physically located at the University of Illinois Urbana-Champaign. The University is in partnership with BP, and it will be responsible for research and development of new biofuel crops, biofuel-delivering agricultural systems, and machines to produce renewable fuels in liquid form for automobile consumption. The University will especially spearhead efforts in the field of genetic engineering with regard to creating the more advanced biofuel crops. The EBI will additionally have as a major focal point technological innovations for converting heavy hydrocarbons into pollution-free and highly efficient fuels.

Also in the US, the battle rages on between Congress and the Geothermal Energy Association (GEA). The GEA's Executive Director Karl Gawell has recently written to the Congress and the Department of Energy, the only way to ensure that DOE and OMB do not simply revert to their irrational insistence on terminating the geothermal research program is to schedule a congressional hearing specifically on geothermal energy, its potential, and the role of federal research. Furthermore, Gawell goes on to say that recent studies by the National Research Council, the Western Governors' Association Clean Energy Task Force and the Massachusetts Institute of Technology all support expanding geothermal research funding to develop the technology necessary to utilize this vast, untapped domestic renewable energy resource. Supporters of geothermal energy, such as this writer, are amazed at the minuscule amount of awareness that the public has about the huge benefits that research and development of the renewable alternative energy source would provide the US, both practically and economically. Geothermal energy is already less expensive to produce in terms of kilowatt-hours than the coal that the US keeps mining. Geothermal energy is readily available, sitting just a few miles below our feet and easily accessible through drilling. One company, Ormat, which is the third largest geothermal energy producer in the US and has plants in several different nations, is already a billion-dollar-per-year business—geothermal energy is certainly economically viable.

University Research into Alternative Energy

2009-12-09T05:46:00.001-08:00

Decades of tree and biomass research jointly conducted by Florida Statue University and Shell Energy have resulted in the planting of the largest single “Energy Crop Plantation” in the entire United States. This Plantation spans approximately 130 acres and is home to over 250,000 planted trees including cottonwoods (native to the area) and eucalyptus (which are non-invasive) along with various row crops such as soybeans. This organization of “super trees” was brought into being as a result of the University's joint research with other agencies including Shell, the US Department of Energy, the Common Purpose Institute, and groups of various individuals who are working to develop alternative energy sources (those not dependent on fossil fuels) for the future. This research is focused on the planting and processing of biomass energy supplies from fast-growing crops known as “closed loop biomass” or simply “energy crops”. The project seeks to develop “power plants” such as wood-pulp or wood-fiber providing plants; clean biogas to be used by industries; plants such as surgarcane which can be used for ethanol development; and crops such as soybeans for biodiesel fuel production.

University involvement in alternative energy research is also going on at Penn State University. At Penn State, special research is focused on the development of hydrogen power as a practical alternative energy source. The researchers involved are convinced that mankind is moving toward a hydrogen-fueled economy due to the needs for us to reduce air pollution and find other sources of energy besides petroleum to power up the United States. Hydrogen energy burns clean and can be endlessly renewed, as it can be drawn from water and crop plants. Hydrogen power would thus be a sustainable energy resource to be found within the US' own infrastructure while the world's supply of (affordable) oil peaks and begins to decline. The University seeks to help with the commercial development of hydrogen powered fuel cells, which would be usable in place of or in tandem with combustion engines for all of our motor vehicles.

When President Bush recently announced his alternative energy initiative, he determined that the government would develop five “Sun Grant” centers for concentrated research. Oregon State University has the honor of having been selected as one of these centers, and has been allocated government grants of $20 million for each of the next four years in order to carry out its mission. OSU will lead the way in researching alternative energy as it represents the interests of the Pacific Islands, the US' Pacific Territories, and nine western states. OSU President Edward Ray says, the research being conducted through OSU’s Sun Grant center will contribute directly to our meeting President Bush’s challenge for energy independence. Specific research into alternative energy being conducted at OSU by varios teams of scientists right now include a project to figure out how to efficiently convert such products as straw into a source of renewable biomass fuel, and another one aimed at studying how to efficiently convert wood fibers into liquid fuel.

XM Satellite Radio Vs. Sirius for your Auto Sound System Selection

2009-12-09T05:43:00.000-08:00

If you're in the market for a new auto sound system you might want to seriously take a moment and consider whether or not you would be benefited by subscribing to either Sirius or XM Satellite Radio. Both of these subscription-based services have something wonderful to offer their subscribers and both of them require specialized equipment in order to operate. This means if you are going to wish to use either service, you will need to have decided which service before you have your auto sound system installed.

It really doesn't matter which of these you choose they each have different features that will appeal to a wide variety of audiences. You will find some wonderful competition among the two not only by way of music radio but also talk radio. If you really love talk radio you really need to subscribe to one of these in order to find a treasure chest of talk radio gems. You will find everything from the mundane to the controversial. From Oprah to Howard Stern exist in the realm of satellite radio, which seems to not only be catching on but also here to stay.

It has been commented on many times that XM Satellite Radio has a strong lead when it comes to subscriptions. This is very true but you should also keep in mind that the new subscribers seem to be leaning more towards Sirius for their satellite radio rather than going with the traditional favorite. I've checked out the line up and can't see that one has much of a clearly defined lead over the other so I can't give a definitive reason for the massive new subscribers to Sirius or even the phenomenal lead that XM Satellite radio is currently enjoying. Regardless if this is something that might interest you, you really should check out each website and decide for yourself which, if either, is more appealing to you as well as whether that appeal is worth the investment and the monthly subscription fee.

I will say this however: XM Satellite Radio for the moment seems to have much better toys to offer consumers. That being said, I'm actually quite surprised that the vast number of new subscribers are going with Sirius rather than XM. Of course, being the gadget geek that I am, I am basing that surprise solely on the fact that XM seems to have much better toys. At the moment XM is offering some really cool gadgets that double not only as XM Satellite Radio receivers but also offer GPS functionality and navigation assistance and controls. Some of these devices even go one step further and play DVDs, CDs, MP3s, among other things.

Believe me, Sirius has a lot to offer its customers as well, I'm simply thrilled over select items that can be found at XM that I really haven't seen adequate competition for elsewhere. On the level of music, both seem to carry similar genres, lineups, etc. The same holds true for the Talk radio line up. The only major difference I am finding between the two are the gadgets. Even the prices are rather competitive with one another. I see only one other major difference and that is the fact that Sirius offers a lifetime membership that cost about the same as the five-year plan from XM Satellite Radio. The thing to remember however is that the lifetime membership is for the lifetime of the device not the subscriber.

I should also point out that opting for satellite radio more than likely will not eliminate your need for a new auto sound system it may however pose certain requirements for the type of sound system you will be able to choose. One thing I have noticed with both companies is that there are plenty of devices from which to choose. You will have your hands full selecting the right equipment for your auto sound system upon which to enjoy the wonderful sounds that satellite radio will bring to your ears each and every day.

The Importance of a Good Auto Sound System

2009-12-09T05:42:00.001-08:00

If you spend a good deal of time in you car, and yes, the morning commute to work and the evening commute home each and every day definitely counts, you are probably more than slightly aware of the benefits of having a good auto sound system. Your sound system is your companion in your travels most of the time. Even those who have children often spend a great deal of time driving alone.

For those long and sometimes lonely miles your auto sound system is the voice of reason, the energetic beat, and the information that keeps you up on current events, weather forecasts, and what is going on in the world of the rich and famous. Even if you aren't all that into music there is the wide and wonderful world of talk radio that keeps many of us informed and inflamed about issues that are important to us and causes which we feel passionately about.

The proper auto sound system affects the way we hear everything that comes through our radios. It doesn't really matter if you have the latest and greatest of subscription programs, XML programming, or even digital radio if your sound system is poor the quality of your programming will never reach your ears. Your sound system is the difference in standard sounds coming through your speakers and excellence making its way to your ears.

Contrary to popular belief however, you do not have to have the loudest sound system in order to have the best sound system. The truth of the matter is that once the music is so loud it ceases to sound like music and comes across to those inside and outside of your automobile more as noise than the wonderful music it may be in other circumstances. While there are many who enjoy the throbbing and jumping sounds that come from over emphasized bass, there is something to be said for an auto sound system that is well rounded and balanced. A good sound system will make all aspects of the music sound better and not just a certain few.

The important thing about sound systems aren't the price that they command, the bass that they flaunt, or even the most minute details of the making and manufacturing of the sound system. The true beauty of a sound system lies in the fact that it should be music to your ears. You and you alone can choose the sound system that you like best as every person has different things they will listen for and enjoy in not only their music but also their sound systems. I love many different types of music and as a result will tend to listen to several different music genres as well as a stint of talk radio on several different systems and elect the one that sounds the best on the most of the music platforms and genres I prefer. I recommend a course of action similar to this to all who are interested in purchasing an auto sound system for their vehicle.

One thing that often gets overlooked is how much time we really spend in our vehicles in the course of a week. Most people pay very little time, money, or attention the particular stereos we put into our vehicles when in reality we spend nearly as much time each week listening to our auto sound systems as we do watching the televisions in our home. Music is all around us and it deeply affects and enhances our joys, our sorrows, even our romance. For those reasons, shouldn't we invest as much, if not more, time and energy in a great auto sound system as we do in a television for our homes?

By taking the time to get the perfect sound system for our vehicles when we first purchase our automobiles we will enjoy the maximum benefit our sound systems can provide. By enjoying our sound system, more people are willing to hang on to their vehicles longer which actually saves a great deal of money in the long run while also increasing your overall enjoyment of your time spent commuting to and from work each and every day.

Auto Sound Systems are Becoming Entertainment Systems

2009-12-09T05:40:00.000-08:00

If you've been shopping lately for an auto sound system then I am fairly certain that you've come across several full entertainment systems among those in the running for your audio and entertainment dollars. Vehicles today offer everything from DVD players, individual speakers, headphones (also individually adjustable), and even dual players that will allow one different audio to be played in one section of the vehicle than another. In addition to all of these wonderful and nifty devices are many more devices that are meant to tempt, sway, and convince you to spend even more money on the auto sound system of your dreams. Some of these even offer MP3 players that connect directly to the audio system of your car, truck, or SUV.

The jury is still out for many people about the safety and sense of having a DVD player in your automobile. While this is the case, people will continue purchasing DVD players are part and parcel of their sound and entertainment systems and manufacturers will continue putting together attractive packages that offer these devices to consumers while offering incredible bargains on installation. I know that many feel that this is an unnecessary distraction to drivers. I'm one of the rare people that feels that in a day of laptops, cell phones, talk radio, fast food, Starbucks coffee, and multitasking, a DVD in the back might be one of the best features that can be added to the car in an effort to minimize distractions coming from the direction of disgruntled passengers in the rear.

I will confess that many people wonder what this has to do with an auto sound system and I can understand that question so please bare with me. One of the features that sound system manufacturers are offering is a feature that allows individual headphones for passengers in the back along with LCD monitors that rest in the back of the head rests so that passengers in the back can both see and hear the DVDs being played without causing a distraction for the driver (either by noise or by means of flashing lights).

The truth of the matter is that having the noise from a DVD player in the back is no worse of a distraction than having disgruntled children competing for your attention from the backseat or listening to audio books as you drive along. I must admit that audio books are one of my current and readily admitted addictions. The problem with those is that on occasion some of the books simply aren't meant for young ears. I try to keep my books limited to popular stories that are suitable for children whenever my children are riding along and save the sometimes steamy and often hilarious tales of Stephanie Plum for when I'm riding alone. Another great reason to make sure you have an auto sound system that at the very least reads and understands MP3s.

The technology exists for this and I expect to see even more innovations technologically speaking in the way of auto sound systems and entertainment systems in the near and not so near future. We live in a world where technology is constantly evolving and we should see many new and wonderful features that will make our lives much more enjoyable for our daily commute.

Whether you are new to the technology of today, fighting it mightily, or happily embracing it-it isn't showing any signs of stopping or slowing down. This means that you will eventually have to face the fact that the old ways of buying an auto sound system will soon be obsolete. I often joke that we are rapidly becoming a society that is catching up with the "Jetson's" vision for the future. I also loudly lament my lack of a Rosie. At any rate, I am glad to see that the new technologies in auto sound systems are offering less of a one size fits all image and offering much more individual systems, even for passengers within a vehicle.

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2009-12-09T05:38:00.001-08:00

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Auto Sound Systems One Piece at a Time

2009-11-18T19:34:00.000-08:00

Those who are in the market for auto sound systems are probably well aware of the many decisions that need to be made throughout the process. Gone are the days when you went in, pointed to a box and walked out with all the pieces, parts, and components you would ever need for a really kickin' sound. The truth of the matter is that there are many pieces and parts that work together in order to create the ultimate sound system and everyone seems to have different requirements, styles, tastes, and budgets to work with.

Because of this, many manufacturers of auto sound systems have wised up to the fact that some people will buy the components they need to create the sound system of their dreams piece by piece as budgets allow. This is actually a very intelligent way for customers on a budget to buy the sound system they are hoping to some day have. As a result you will find that speakers, amplifiers, sub woofers, and the actual stereo are often sold separately and at very reasonable prices.

Most of us hate living within limited budgets but understand that often in life it is a necessary evil. Living on a budget is not such a terrible thing really. If we had everything we wanted, what on earth would there be to look forward to? At least that is what I keep telling myself. I, however, seem to be the queen of budget living and bargain hunting. I love little more in life than finding a great deal on an item I've had my eye on for quite a while and hate little more than finding it cheaper once I've purchased it. As such, I tend to invest a great deal of time researching any major purchase before taking the plunge. A good auto sound system by this I mean good quality, minimal features is going to run (total package and installation) at least $1,000 with many costing a good deal more than that.

That doesn't mean you need to have a thousand bucks lying around the house in order to begin building your auto sound system. You can buy a decent set of speakers for around $200-$260 if you desire. You can find sets at lower prices, but this is the price for a fairly decent set of speakers that should serve you well. Keep in mind that you could very easily spend a lot more than this on speakers if you aren't careful. Living on a budget means you have to make some sacrifices along the way in order to have the things you want in life. Buy the speakers and have them installed (if you can do it or your know someone who can, this will save a lot of time and money).

Once you have the first component, whichever one that may be (that choice is entirely up to you and largely dependent on your personal tastes and which need replacing worse in the vehicle you own) you can begin saving towards the next. You should also consider asking friends and family (who would like to know what to get you for the holidays) to help you reach your smaller goals along the way. Most people are glad to help with specific items if they know what those items are. The point is that this isn't an all or nothing proposition. Take small steps towards your prize and you will find that you are constantly getting one step closer.

Geothermal Power as Alternative Energy

2009-11-17T22:08:00.000-08:00

We should be doing everything possible to develop geothermal energy technologies. This is a largely untapped area of tremendous alternative energy potential, as it simply taps the energy being naturally produced by the Earth herself. Vast amounts of power are present below the surface crust on which we move and have our being. All we need do is tap into it and harness it.

At the Earths' core, the temperature is 60 times greater than that of water being boiled. The tremendous heat creates pressures that exert themselves only a couple of miles below us, and these pressures contain huge amounts of energy. Superheated fluids in the form of magma, which we see the power and energy of whenever there is a volcanic eruption, await our tapping. These fluids also trickle to the surface as steam and emerge from vents. We can create our own vents, and we can create out own containment chambers for the magma and convert all of this energy into electricity to light and heat our homes. In the creation of a geothermal power plant, a well would be dug where there is a good source of magma or heated fluid. Piping would be fitted down into the source, and the fluids forced to the surface to produce the needed steam. The steam would turn a turbine engine, which would generate the electricity.

There are criticisms of geothermal energy tapping which prevent its being implemented on the large scale which it should be. Critics say that study and research to find a resourceful area is too costly and takes up too much time. Then there is more great expense needed to build a geothermal power plant, and there is no promise of the plant turning a profit. Some geothermal sites, once tapped, might be found to not produce a large enough amount of steam for the power plant to be viable or reliable. And we hear from the environmentalists who worry that bringing up magma can bring up potentially harmful materials along with it.

However, the great benefits of geothermal energy would subsume these criticisms if only we would explore it more. The fact that geothermal energy is merely the energy of the Earth herself means it does not produce any pollutants. Geothermal energy is extremely efficient—the efforts needed to channel it are minimal after a site is found and a plant is set up. Geothermal plants, furthermore, do not need to be as large as electrical plants, giant dams, or atomic energy facilities—the environment would thus be less disrupted. And, needless to say, it is an alternative form of energy—using it would mean we become that much less dependent on oil and coal. Perhaps most importantly of all—we are never, ever going to run out of geothermal energy, and it is not a commodity that would continuously become more expensive in terms of real dollars as time passes, since it is ubiquitous. Geothermal energy would be, in the end, very cheap, after investigation and power plant building costs are recouped.

Today's Auto Sound Systems are more than meets the Eye

2009-11-12T12:33:00.000-08:00

The auto sound systems of today are much more involved and complicated than the simple car stereo and speakers of years long past. Today's sound systems have all kinds of bells and whistles that many us could have only imagined during our younger years. In fact, it is quite possible that many of us did imagine these and those imaginings are how they came to be. One thing you need to do before you even begin to put the auto sound system of your dreams together is learn what kinds of components exist, how they work together, and which ones you really think you need as part of your auto sound system and which components you honestly feel you can live without.

Life is about compromise and most of us will readily admit that we are quite unlikely to ever use all the bells, whistles, and upgrades that are made available to us within our lifetimes. I don't know about you, but my cell phone has features I've never even gotten around to learning how to use. I know I can use them and I have a subscription to do so, but have never managed to actually get around to watching the news, I find that if I am on my phone the news would be an interruption and if I am in the mood to watch the news, I'll generally find a television and watch on a larger screen.

Our auto sound systems are a lot like this. If you don't do an extensive amount of travel with little ones in your car, it is unlikely that you will need a sound system that allows wireless speakers for the back seat. However if you are putting a good sound system in your family car, this may be a good idea, as we don't always enjoy the same music as our children. I don't know about you, but I can only handle "The Wheels on the Bus" so many times in one car trip. For that reason alone I think the individual headphones are a wonderful idea.

One thing that I have found I can't live without in my auto sound system is an MP3 player. I'm literally addicted to audio books and have found that I can subscribe to an online service that allows me to download entire books to my computer and either burn them to a CD or put them on a memory stick to play on my next road trip. It makes the trip seem to go so much more quickly when I have something to occupy my mind rather than switching radio stations on a regular basis in search of a song I enjoy that hasn't been overplayed.

Some people can't live without at least a 6-disc CD changer as part of their auto sound system and others find that XML is the only way to go. Whatever your choice, the thing to remember is that it is your choice. Only you can choose the auto sound system that works best with your tastes and requirements. Only you can decide whether or not you enjoy the sound your sound system provides, and only you can decide which bells and whistles are important and essential and which ones you can live without. It is your money that will pay for the upgrades you desire and your tastes they should please.

Take the time to study not only the music, but also the sound and the components that are available for the sound system you choose. Also pay close attention to what is included in the price you think you are paying. More often than not each component is sold as either an add on or an upgrade so be careful that you aren't getting less than you think you are or paying more than you think you will be paying for the auto sound system you choose.

How Bluetooth Works

2009-11-05T11:12:00.000-08:00

Bluetooth devices will normally operate at 2.4 GHZ in the license free, globally available ISM radio band. The advantage to this band includes worldwide availability and compatibility. A disadvantage to this however, is that the devices must share this band with other RF emitters. This includes automobile security systems, other wireless devices, and other noise sources, such as microwaves.

To overcome this challenge, Bluetooth employs a fast frequency hopping scheme and therefore uses shorter packets than other standards within the ISM band. This scheme helps to make Bluetooth communication more robust and more secure.

Frequency hopping

Frequency hopping is basically jumping from frequency to frequency within the ISM radio band. After a bluetooth device sends or receives a packet, it and the device (or devices) it's communicating with hop to another frequency before the next packet is sent. This scheme offers three advantages:

Allows Bluetooth devices to use the entirety of the available ISM band, while never transmitting from a fixed frequency for more than a short period of time. This helps insure that Bluetooth conforms to the ISM restrictions on the transmission quantity per frequency.

Ensures that any interference won't last long. Any packet that doesn't arrive safely to its destination can be resent to the next frequency.

Provides a base level of security as it's very hard for an eavesdropping device to predict which frequency the Bluetooth devices will use next.

The connected devices however, must agree upon the frequency they will use next. The specification in Bluetooth ensures this in two ways. First, it defines a master and slave type relationship between bluetooth devices. Next, it specifies an algorithm that uses device specific information when calculating the frequency hop sequences.

A Bluetooth device that operates in master mode can communicate with up to seven devices that are set in slave mode. To each of the slaves, the master Bluetooth device will send its own unique address and the value of its own internal clock. The information sent is then used to calculate the frequency hop sequences.

Because the master device and each of the slave devices use the same algorithm with the same initial input, the connected devices will always arrive together at the next frequency that they have agreed upon.

As a replacement for cable technology, it's no wonder that Bluetooth devices are usually battery powered, such as wireless mice and battery powered cell phones. To conserve the power, most devices operate in low power. This helps to give Bluetooth devices a range of around 5 - 10 meters.

This range is far enough for wireless communication but close enough to avoid drawing too much power from the power source of the device.

Introduction To Bluetooth

2009-11-05T11:07:00.000-08:00

Bluetooth was designed to allow low bandwidth wireless connections to become easy to use so even those who are new to wireless can use them. Version 1.1 of Bluetooth describes a low power, short range wireless networking technology that uses radio waves to send
data at rates up to 720 kilobits a second.

The specification for Bluetooth provides for different classes of radio that allow transmission ranges of up to 100 meters by boosting the radio power. The technology of Bluetooth isn't limited to line of sight transmission since it uses directional waves that are capable of transmitting through many obstructions.

Bluetooth is an industry standard communication of wireless, meaning that it enables the connection of other devices as well, such as cell phones, computers, digital cameras, and other types of electronic devices. The specification of Bluetooth defines a radio system and a "stack" of protocol layers and profiles. The highest layer is the application layer, while the lowest layer is the radio.

The wireless technology of Bluetooth is positioned to revolutionize the personal connectivity market by providing freedom from inconvenient fixed type lines.

The specification for Bluetooth eliminates the need for cables by providing a small form factor, low cost wireless solution that will link computers, cell phones, and other electronics. Bluetooth also allows users to connect many ranges of devices quickly and easily and expands communications capabilities as well.

The size of the Bluetooth radio is amazing, as a Bluetooth radio can be built into one or two very small microchips then integrated into any electronic device where wireless operations would be an advantage. Bluetooth also offers a robust link, which ensures
that normal operating circumstances are not interrupted by interference from other signals that are operating in the same frequency band.

Also known for its worldwide operation, Bluetooth radio operates in the 2.4 GHz frequency band, which is license free and available to any type of radio system in the world. No matter where you are in the world, you count on Bluetooth to work. Security is also important. Offering advanced security mechanisms, Bluetooth ensures a high level of security. Therefore, authentification will prevent unauthorized acess to important data and make it very difficult to listen in.

Bluetooth also boasts power optimization. The radio is power friendly and the software for Bluetooth is very configurable, limiting the power consumption of equipment. The radio itself only consumes a small amount of power from a cellular phone.

Resources for Alternative Energy

2009-11-05T10:59:00.000-08:00

There are many different forms in which alternative energy is available. One of these is solar power. Solar power is driven by photovoltaic cells, and these are progressively getting less expensive and more advanced. Solar energy power can be used for electricity, heating, and making hot water. Solar energy produces no pollution, as its input comes completely from the sun's rays. However, much more work still needs to be done in order for us to economically harness the sun's energy. For the time being, the resource is a little too conditional—storage batteries are needed to be used as backups in the evenings and on inclement days.

Wind energy has become the most-invested-in (by private investors and governments together) alternative energy source for the time being. The great arrays of triple-bladed windmills are being placed all over as “wind farms”, to capture the motion of the wind and use its kinetic energy for conversion to mechanical or electrical energy. Of course, there is nothing new about the concept of a windmill for harnessing energy. Modern wind turbines are simply are more advanced variations on the old theme. Of course, the drawback to wind energy is...what do you do when there is a calm, still day? Needless to say, during these times the electric company kicks in for powering your home or office. Wind energy is not altogether independent.

Hydroelectric energy is available as a source of alternative energy, and it can generate a substantial amount of power. Simply put, hydroelectric energy uses the motion of water—its flow in response to gravity, which means downhill—to turn turbines which then generate electrical energy. Needless to say, water is ubiquitous; finding sources for driving hydroelectric turbines is, therefore, not much of a problem. However, hydroelectricity as a source of alternative energy can be complicated and expensive to produce. Dams are often built in order to be able to control the flow of the water sufficiently to generate the needed power. Building a dam to store and control water's potential and kinetic energy takes quite a lot of work, and operating one is complex as well,and conservationists grow concerned that it. Of course, a dam is not always needed if one is not trying to supply the electrical needs of a city or other very densely populated area. There are small run-of-river hydroelectric converters which are good for supplying neighborhoods or an individual office or home.

Probably the most underrated and under-appreciated form of alternative energy is geothermal energy, which is simply the naturally-occurring energy produced by the heating of artesian waters that are just below the earth's crust. This heat is transferred into the water from the earth's inner molten core. The water is drawn up by various different methods—there are “dry steam” power plants, “flash” power plants, and “binary” power plants for harnessing geothermal energy. The purpose of drawing up the hot water is for the gathering of the steam. The Geysers, approximately 100 miles north of San Francisco, is probably the best-known of all geothermal power fields; it's an example of a dry stream plant.

Solar Energy Collecting as an Alternative Energy Source

2009-11-04T09:34:00.000-08:00

Photovoltaic cells—those black squares an array of which comprises a solar panel are getting more efficient, and gradually less expensive, all the time, thanks to ever-better designs which all them to focus the gathered sunlight on a more and more concentrated point. The size of the cells is decreasing as their efficiency rises, meaning that each cell becomes cheaper to produce and at once more productive. As far as the aforementioned cost, the price of producing solar generated energy per watt hour has come down to $4.00 at the time of this writing. Just 17 years ago, it was nearly double that cost.

Solar powered electricity generation is certainly good for the environment, as this alternative form of producing energy gives off absolutely zero emissions into the atmosphere and is merely utilizing one of the most naturally occurring of all things as its driver. Solar collection cells are becoming slowly but surely ever more practical for placing upon the rooftops of people's homes, and they are not a difficult system to use for heating one's home, creating hot water, or producing electricity. In the case of using the photovoltaic cells for hot water generation, the system works by having the water encased in the cells, where it is heated and then sent through your pipes.

Photovoltaic cells are becoming increasingly better at collecting sufficient radiation from the sun even on overcast or stormy days. One company in particular, Uni-Solar, has developed solar collection arrays for the home that work well on inclement days, by way of a technologically more advanced system that stores more energy at one time during sunlit days than previous or other arrays.

There is actually another solar power system available for use called the PV System. The PV System is connected to the nearest electrical grid; whenever there is an excess of solar energy being collected at a particular home, it is transferred to the grid for shared use and as a means of lowering the grid's dependence on the hydroelectrically-driven electricity production. Being connected to the PV System can keep your costs down as compared to full-fledged solar energy, while at once reducing pollution and taking pressure off the grid system. Some areas are designing centralized solar collection arrays for small towns or suburban communities.

Some big-name corporations have made it clear that they are also getting into the act of using solar power (a further indication that solar generated energy is becoming an economically viable alternative energy source). Google is putting in a 1.6 megawatt solar power generation plant on the roof of its corporate headquarters, while Wal Mart wants to put in an enormous 100 megawatt system of its own.

Nations such as Japan, Germany, the United States, and Switzerland have been furthering the cause of solar energy production by providing government subsidies or by giving tax breaks to companies and individuals who agree to utilize solar power for generating their heat or electrical power. As technology advances and a greater storage of solar collection materials is made available, more and more private investors will see the value of investing in this “green” technology and further its implementation much more.