5 Technologies That Changed/Or Will Change The World

1. Fibre Optics


Fibre optic technology was first demonstrated in the 1840’s by Colladon and Babinet. Fibre optic tubes refract light within glass tubes with little loss of light over the length of the tube.

In 1880 Alexander Graham Bell developed the technology to transmit voice signals over an optical beam. Bundled together, fibre optic cables are immune to electrical interference making them good for use in computer networking. Fibre optic transmissions are also much harder to snoop and are therefore considered more secure.

2. Graphene


Graphene will completely revolutionise technology. Created at the University of Manchester, UK, graphene is a layer of graphite one atom thick. It is very strong, an excellent conductor of heat and electricity and is predicted to transform mobile devices. Imagine a flexible cellphone or tablet.


3. Cellphone Technology


The technology to enable cellphones to communicate from a base station was proposed in 1947, however the technology did not allow the phone to move out of range of the base station.

A car phone call, using a rotary dial to make the call was first used in Sweden in 1956. The first mobile phone call was made from a Motorola phone in 1973.


4. Personal Computing


Microcomputers started to be mass marketed in 1977 and the name “Personal Computer” appeared six years later when Hewlett Packard announced its 9100A personal computer. Microchip technology has significantly reduced the cost — and size — of the processor as its power increased and form factors became much more compact.

Although there are well over a billion PC’s in existence, smartphone and tablet technology have started to become prevalent in consumer markets around the world.


5. Solar Cells


Solar cells convert light energy to electricity. The photovoltaic effect was first demonstrated by Becquerel in 1839. It has recently achieved a level of almost 45 percent efficiency. About 16 solar panels could be connected to your house and meet all of your energy needs.


See you all tomorrow.

Buh-bye.

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