Contents

Understanding how fiber optics are made and function for uses in everyday life is an intriguing work of art combined with science. Fiber optics has been fabricated from materials that transmit light and are made from a bundle of very thin glass or plastic fibers enclosed in a tube. One end is at a source of light and the other end is a camera lens, used to channel light and images around the bends and corners. Fiber optics have a highly transparent core of glass, or plastic e...

A Brief Introduction To Fiber Optics Technology

A Brief Introduction To Fiber Optics TechnologyUnderstanding how fiber optics are made and function for uses in everyday life is an intriguing work of art combined with science. Fiber optics has been fabricated from materials that transmit light and are made from a bundle of very thin glass or plastic fibers enclosed in a tube. One end is at a source of light and the other end is a camera lens, used to channel light and images around the bends and corners. Fiber optics have a highly transparent core of glass, or plastic encircled by a covering called "cladding". Light is stimulated through a source on one end of the fiber optic and as the light travels through the tube, the cladding is there to keep it all inside. A bundle of fiber optics may be bent or twisted without distorting the image, as the cladding is designed to reflect these lighting images from inside the surface. This fiber optic light source can carry light over mass distances, ranging from a few inches to over 100 miles. There are two kinds of fiber optics. The single-mode fiber optic is used for high speed and long distance transmissions because they have extremely tiny cores and they accept light only along the axis of the fibers. Tiny lasers send light directly into the fiber optic where there are low-loss connectors used to join the fibers within the system without substantially degrading the light signal. Then there are multi-mode which have much larger cores and accept light from a variety of angles and can use more types of light sources. Multi-mode fiber optics also use less expensive connectors, but they cannot be used over long distances as with the single-mode fiber optics. Fiber optics have a large variety of uses. Most common and widely used in communication systems, fiber optic communication systems have a variety of features that make it superior to the systems that use the traditional copper cables. The use of fiber optics with these systems use a larger information-carrying capacity where they are not hassled with electrical interference and require fewer amplifiers then the copper cable systems. Fiber optic communication systems are installed in large networks of fiber optic bundles all around the world and even under the oceans. Many fiber optic testers are available to provide you with the best fiber optic equipment.In fiber optic communication systems, lasers are used to transmit messages in numeric code by flashing on and off at high speeds. This code can constitute a voice or an electronic file containing, text, numbers, or illustrations, all by using fiber optics. The light from many lasers are added together onto a single fiber optic enabling thousands of currents of data to pass through a single fiber optic cable at one time. This data will travel through the fiber optics and into interpreting devices to convert the messages back into the form of its original signals. Industries also use fiber optics to measure temperatures, pressure, acceleration and voltage, among an assortment of other uses.

Audio Books Hot For 2006

Audio Books Hot For 2006

Audio books have been around for many years, but they have become more popular recently. It is said that they will become even more popular in 2006. There are many trends that will hit the audio books market in 2006.Say goodbye to audio CD and cassettes and say hello to downloadable audio books. MP3 audio books and other formats of digital audio books will become cheaper and easier to access. Audio books on CDs and cassettes tend to be more of an inconvenience, even though they are more user friendly. But this year the amount of listeners who download audio books from the internet to listen on their various mobile devices will rise significantly. This does not come as a big surprise as MP3s have become more popular then portable CD players. Similar to the DVD market, most audio book listeners will prefer to rent audio books instead of buying them. It seems this trend will be the strongest for downloadable audio books but is also true for audio books on CD and books on tape.Another trend that will become popular is the online audio book services, which will offer low cost and free audio books through free trial offers and special deals. So in some cases, you may not even have to buy the book. The audio books market has been quite popular in the United Kingdom; in 2004 it sold over $124 million. It is said that the trend is soon going to take Europe by storm. In 2005 the market in Germany grew to $120 million. It is expected to rise about 20 % in the whole continent during the year of 2006. So join the band wagon and get yourself some audio books. You can listen to them while doing exercise. Instead of listening to music you can listen to your favourite book.

Tips In Buying Used And Refurbished Computers

Tips In Buying Used And Refurbished Computers

While computers today are generally cheaper than models sold years ago, they still represent a major investment. Quality new computers can cost anywhere from $500 - $1500, depending upon capabilities. Clearly, it is a purchase that deserves your full attention and thought. Speaking of thought, have you ever considered buying a used or refurbished computer? These computers can represent a major savings to you, without loss of performance. However, there are some things you should know before looking into these alternatives to new computers. In this article, well discuss some tips in buying used and refurbished computers.The first thing to consider when buying used and refurbished computers is the brand. While there are many different companies that specialize in selling used computers, it might be best to go with a reputable brand name. The reasons are two-fold. First, you can be sure that the parts used in manufacturing are of a high quality. Second, you will also be able to secure some type of warranty, which may not be offered by other dealers.The next tip in buying used and refurbished computers is to make sure that that you receive the proper software documents and licenses. Often times people try to pass off stolen computers as used, so it is important to request the paperwork upfront. It is also important to have this software in case you need to do any type of system restore or back-up.It is also important that you try any refurbished computer before you buy. Most reputable dealers will allow you to use the computer for a short period of time to check out before committing to purchase. What are a few of the things you should be looking for? Make sure that all installed programs boot up and perform correctly. Do a thorough check of all graphics, video, and sound drivers and also make sure other accessories work properly (mouse, monitor, keyboard, etc.). Lastly, be sure to check all CD and disk drives to make sure they open and close correctly.Another thing to consider when buying a used or refurbished computer is the support option. Does the company you want to buy from have ample support staff available? And are the hours convenient with your own schedule? If a business does not offer support for the system you are considering, it is best to move on to another choice.Lastly, make sure that you are safe if shopping online for your used or refurbished computer. The internet can pose many dangers, so protect your personal information on any site that you choose to do business with. A quality site will have some type of encryption service in place to keep your financial transaction private.We hope that these tips in buying used and refurbished computers will help you make a more informed shopping decision. In addition to the tips mentioned in this article, using common sense will help ensure that you receive the best used computer for your needs, at a terrific value.

How To Remove Winfixer 2005 Plus Unwanted Spyware And Adware

How To Remove Winfixer 2005 Plus Unwanted Spyware And Adware

Spyware and adware is advertising supported software that allows its publishers to snoop on a computer user's internet activity. It is designed to obtain information about computer users and their surfing behavior usually without their knowledge or consent. Spyware is potentially more harmful than Adware because it can record your keystrokes, history, passwords, credit card number and other confidential and private information. Besides spyware and adware, computers can also be infected with my other internet parasites such as Winfixer 2005, viruses, trojans, dialers, etc. Spyware and adware are installed quite easily on most computers. Many spyware programs often enter computers hidden in programs such as freeware, shareware or demos. Some programs like Winfixer 2005 will often load on boot up, take up your computer memory, cause a computer to display system errors, spawn multiple pop-up windows and even shut down itself. Why is it important to detect and remove spyware, adware and other internet parasites? - Loss of privacy - Reduced and slow PC performance - Annoying pop-ups that do not go away. - A computer's homepage can be changed. - In severe cases, a person's sensitive and confidential information can be recorded and then subsequently misused...exposing that person to identity theft, unauthorized use of their bank account or credit card and many other problems. How to protect against spyware: - Download and install a spyware remover. Every week you should check for updates to install for the scanner. This will help protect you against the latest threats. - Use a firewall and an Anti-virus program. Many people have a direct connection the Internet and do not setup and run a firewall. This can potentially be very dangerous. Firewalls should be running to protect against many potential problems including hackers and spyware. - Be careful about installing freeware software and downloading music online. Some spyware programs display messages asking for your permission to install the application. Read their agreements carefully as well. - Be careful as to what sites you visit...sometimes spyware and adware can be installed on a computer simply by visiting a website. - Use The Mozilla Firefox browser as it is less vulnerable to spyware and adware than Internet Explorer.

The Real Reasons You Need A Media Converter

Let's face it. Network technology isn't sexy. Most people don't sit around debating the various forms of network technology that exist today and think to themselves 'wow, this is what I want to do in my spare time.' The fact of the matter is that computer networks can be as boring as watching paint dry. And when it comes to the underlying technology of these networks, the only people you might be find debating the various pros and cons are true geeks.Media converters are no different. And before you think that you can spend the rest of your life using copper connections to maintain your network, think again. Let's look at the top 2 reasons why you might need to invest in a quality media converter. And yes, we'll try to make this as interesting as possible. Here we go.1)The real reason why you need a "media converter" is simple: distance. Copper has intrinsic limitations where it's only really good for about 300 feet (or so the popular opinion is). After that you need to add some fiber to make the network really powerful (or at least make it operational). The real reason for copper's distance limitations probably has something to do with copper's inherent physical properties, but regardless, a media converter will extend copper's effectiveness when paired up with fiber.2)Save some money. Who doesn't like to save some money here and there? I certainly do. If you want to redo your network completely and save a whole bunch of money, there is no reason why you should completely wire your office (or building) in fiber from the start. As attractive an option as having a business that is completely fiber (the coveted 'fiber to desktop'), if you can save substantial money by investing in a simple media converter, it will be more than worth your while.There is more to media converter story than meets the eye at first glance. Get informed about media converters before you take off and invest your hard earned money. A media converter can make a lot of sense in the right situation.

review the usb hub

The hub has its own transformer and it supplies power to the bus so that the devices do not overload the computer 's supply. If you have lots of unpowered devices like mice and cameras, you probably need a powered hub. If you have lots of self-powered devices (like printers and scanners), then your hub does not need to be powered -- none of the devices connecting to the hub needs additional power, so the computer can handle it. The power (up to 500 milliamps at 5 volts) comes from the computer. Obviously, a high-power device like a printer or scanner will have its own power supply, but low-power devices like mice and digital cameras get their power from the bus in order to simplify them. As you will see on the next page, the USB standard allows for devices to draw their power from their USB connection. Hubs can be powered or unpowered. By chaining hubs together, you can build up dozens of available USB ports on a single computer. You plug the hub into your computer, and then plug your devices (or other hubs) into the hub. hub typically has four new ports, but may have many more. The USB standard supports up to 127 devices, and USB hubs are a part of the standard. My computer has only one USB connector on it, so the obvious question is, "How do you hook up all the devices?" The easy solution to the problem is to buy an inexpensive USB hub. For example, on the computer that I am typing on right now, I have a USB printer, a USB scanner, a USB Webcam and a USB network connection. With so many USB devices on the market today, you easily run out of sockets very quickly. USB Hubs Most computers that you buy today come with one or two USB sockets.

Summary

Understanding how fiber optics are made and function for uses in everyday life is an intriguing work of art combined with science. Fiber optics has been fabricated from materials that transmit light and are made from a bundle of very thin glass or plastic fibers enclosed in a tube. One end is at a source of light and the other end is a camera lens, used to channel light and images around the bends and corners. Fiber optics have a highly transparent core of glass, or plastic e...