Essay about Li Fi Technology: A Visible Light Communication

1. Thanks to Wi-Fi technology, this devices can connect wirelessly and seamlessly to one’s existing broadband connection in seconds.

4. Use the Internet to research one to two applications of the identified wireless technology. List each application found. Reference the websites you used to locate this information.

4. Radio: most common form of wireless transmission, typical of home routers and most wireless devices to use this form. Infared uses low frequency light waves to carry data using line-of-sight.

In the recent years, wireless technologies have taken a new dimension in the ways society lives. Wireless broadband is available to everyone. Whether the users are at home, driving the car, sitting in the park, and it would even work while people are a pleasure boat ride in the middle of a lake. And because of this, the need to have information at any time and be connected in all places, all the time has been satisfied.

The market for wireless communications has experienced incredible growth over recent years and wireless LANs have rapidly become a very

1. In your opinion, what is the purpose of our dropping the transmit power to such a low level?

In many situations wireless solutions can easily deliver same speeds that wired solutions are delivering. So it is a better reason to use wireless USB.

The invention of wifi didn't start as, well, wifi. It started with a woman named Hedy Lamar. She was born Jewish during WW2. She fled to America where she became the most beautiful actress ever. People saw her only for her looks, not her brains. She invented many things, stupid things, like a new Kleenex box. But, one day, she thought that if pianos could hop from note to note, so could radios from frequency to frequency. So she and a partner invented Frequency Hopping. Her thought process was if radios hopped from signal to signal, it couldn't be jammed or hacked into. It was called, Frequency Hopping. It was presented to the Navy, and they turned it down. Lamar got a patent for it, but in years later sold it off to the Navy. She watched it

Perhaps the greatest advantage of wireless networks is the freedom from physical cabling. Laptop users can finally use their machines as they were intended; away from a desk. Unfortunately, wireless LAN standards (IEEE 802.11) are considerably slower than their wired counterparts. 802.11a wireless is capable of speeds up to 72Mbps; however, it is currently restricted to a throughput of 54Mbps by the FCC.

Information technology experts have developed a new technology that uses wireless lighting for industries. Smart lighting allows a room to be lit according to the number of the people in it, outside temperatures and the use meant for the room. This thus enables customized lighting, unlike the traditional room lighting that was standardized. These technologies have some disadvantages too (Pye, 2014).

As you probably realized, you use wifi everyday for multiple reasons. What you probably didn't know was how wifi came about. Many years ago, a lady named Hedy Lamar befriended a Hollywood composer named George Antheil. Together, they realized if a player piano could jump from note to note, so could a radio signal. Hedy proposed the idea to the Navy to torpedo German U-Boats in the Atlantic, but she was turned down and told to try and raise money instead. Throughout the years, Lamar's career started to slowly decline as others stole her idea of frequency hopping. In the end, Hedy earned no money from her idea, and her beauty was much more noticed than her brains.

This report will discuss the advantages, disadvantages and details of both natural daylight and artificial lighting systems in terms of developing within a commercial property. The report provides detailed research and analysis concerning the subject topic in order to give a comprehensive view of various lighting types and methods. Light is an electromagnetic radiation visible to the human eye, the wavelengths visible to humans range between 380nm (nanometers) to 740nm. Light behaves as a wave - it undergoes reflection, refraction, and diffraction just like any wave would.

For years, infrared LED has been merely a system for piping light around corners and into the inaccessible places to allow the hidden to be lighted. But now, infrared LED has evolved into a system of significantly greater importance and use. Throughout the world, it is now being used to transmit voice, television and data signals as light waves. Its advantages as compared with conventional coaxial cable or twisted wire pairs are manifold. As a result, millions of dollars are being spent to put these light wave communication systems into operation.

So to overcome this type of problem we can design IoT technology based system for lighting appliances which can be control from any remote places though web based graphical user interface.

The field of communications is one in which the technologies are changing on an almost daily basis. Numerous different technologies have been pursued over the past few years; each designed to essentially accomplish several basic purposes in terms of community service. Three of the most actively pursued application include interactive distance learning, video conferencing, and entertainment. While it is the first two, video conferencing and interactive distance learning, which would serve to the best advantage in terms of education and business; it is the last, entertainment which has the most appeal to the largest number of people. The application of various communications applications in