The Birth And Evolution Of Wireless Technology

As we move forward into the 21st century it seems that the title of the digital era

is one that rings ever more true, there certainly is a lot in the way of technological advancements the majority of which is focused around digital mediums. One technological advancement that is only recently being perfected is the use of wireless technology, this has a number of implications, probably the most obvious of which is the mobility that can be provided. Wireless technology is already in a number of household appliances and has been for a reasonable amount of time, for example TV remotes, however the prospect of having appliances that are completely void of cables is still one that people dont deem a reality.

Wireless technology is used in so many different ways in the modern day but when did the first steps towards wireless technology begin? Where do the foundations for this new technology lie? Well you may be surprised to learn that it was as long as 200 years ago that the first innovations came about that would eventually lead to the development of modern day wireless technology.

In 1947 Benjamin Franklin proposed a model of electricity that actually proved that electricity could be transmitted through the air. By 1819 a Danish physicist known as Hans Christian Oersted noted that the compass on a needle would move when near an electric field, therefore establishing the fundamental relationship between electricity and magnetism. Then in 1831 Michael Faraday demonstrated electromagnetic induction by building the first direct-current generator, although this wasnt useful for communications it did provide a way of generating electricity.

Following this the next big step was theoretical work proposed by a Scottish physicist called James Clerk Maxwell. He published On a Dynamical Theory of the Electromagnetic Field in 1865, and A Treatise on Electricity and Magnetism in 1873. These works presented a series of complicated equations that described the movement of electromagnetic waves through space, the equations are known as Maxwells equations and remarkably we still use them today. Heinrich Hertz then built on this work and invented the oscillator, (an alternating-current generator) and created radio waves.

Nowadays wireless technology is being incorporated into many different innovations, first the mobile phone revolutionised communication. And now Wi-Fi allows people to wirelessly access Internet connections and get online; this has huge implications when you consider the fact that virtually the whole of the world is available on the net. Never has there been a time that communication and access to information been so flexible and accommodating.

by: Jeremy Mond

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