Dec 24, 2009

The Wireless and its Modern Role

Everyday, a new advancement of technology, in remorse to the old technology that we have in the past decades, have been made and reviesed by a lot of people over and over again. Wireless technologies, high end gadgets and mobile phones, touch screen tv's and even computers are well done with this year. What could we expect more on this coming year. 2009 has been a great advancement with technology. But one thing that amazed me off is the advancement of wireless technology.

This wireless technology that we have now a days has changed the lives of many people. Not just national or international but globally. Literally, it changed a lot, actually everything the way we live our lives. Usually it comes in form of communication that we barely know that its wireless. Some comes too obvious, sometimes it doesnt thats because were to inclined to it that we dont even bother what it is.

I looked around and researched to this idea, and found some fascinating ideas that I thought of sharing. Here shows the time line discovery of innovation in wireless technology. Thanks to wikipedia for this one.

  • David E. Hughes, eight years before Hertz's experiments, transmitted radio signals over a few hundred yards by means of a clockwork keyed transmitter. As this was before Maxwell work was understood, Hughes' contemporaries dismissed his achievement as mere "Induction". In 1885, T. A. Edison used a vibrator magnet for induction transmission. In 1888, Edison deploys a system of signaling on the Lehigh Valley Railroad. In 1891, Edison obtained the wireless patent for this method using inductance (U.S. Patent 465,971).
  • In the history of wireless technology, the demonstration of the theory of electromagnetic waves by Heinrich Hertz in 1888 was important. Theory of electromagnetic waves were predicted from the research of James Clerk Maxwell and Michael Faraday. Hertz demonstrated that electromagnetic waves could be transmitted and caused to travel through space at straight lines and that they were able to be received by an experimental apparatus. The experiments were not followed up by Hertz. Jagadish Chandra Bose around this time developed an early wireless detection device and help increase the knowledge of millimeter length electromagnetic waves. Practical applications of wireless radio communication and radio remote control technology were implemented by later inventors, such as Nikola Tesla.
And you might be thinking what are the changes that wireless technology had made to everybodies lives. Well try to check on this and maybe you have one of them and you are not just aware of.
  • Security systems - wireless technology may supplement or replace hard wired implementations in security systems for homes or office buildings.
  • Television remote control - modern televisions use wireless (generally infrared) remote control units. Now radio waves are also used.
  • Telephony (phones and modems) - perhaps the best known example of wireless technology is the cellular telephone and modems. These instruments use radio waves to enable the operator to make phone calls from many locations worldwide. They can be used anywhere that there is a cellular telephone site to house the equipment that is required to transmit and receive the signal that is used to transfer both voice and data to and from these instruments.
  • WiFi (for wireless fidelity) - is a wireless LAN technology that enables laptop PCs, PDAs, and other devices to connect easily to the internet. Technically known as IEEE 802.11 a,b,g,n, Wi-Fi is less expensive and nearing the speeds of standard Ethernet and other common wire-based LAN technologies. Several Wi-Fi hot spots have been popular over the past few years. Some businesses charge customers a monthly fee for service, while others have begun offering it for free in an effort to increase the sales of their goods.
  • Wireless energy transfer - wireless energy transfer is a process whereby electrical energy is transmitted from a power source to an electrical load that does not have a built-in power source, without the use of interconnecting wires.
  • Computer Interface Devices - answering the call of customers frustrated with cord clutter, many manufactures of computer peripherals turned to wireless technology to satisfy their consumer base. Originally these units used bulky, highly limited transceivers to mediate between a computer and a keyboard and mouse, however more recent generations have used small, high quality devices, some even incorporating Bluetooth. These systems have become so ubiquitous that some users have begun complaining about a lack of wired peripherals. devices tend to have a slightly slower response time than their wired counterparts, however the gap is decreasing. Initial concerns about the security of wireless keyboards have also been addressed with the maturation of the technology.
On the contrary, scientist have been complaining with wireless technology since this interfer with their expirements. This interference forces them to use lesser optimal peripherals because the optimum wired ones are simply not available in wired version. This has become especially prevalent among scientists who use trackballs as the number of models in production steadily decreases.

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