Barcode, 1973
Barcodes were conceived as a kind of visual Morse code by a
The internet, 1969
The simplest way to illustrate the inestimable impact of the internet is to chart the growth in the number of people connected to it: from just four in 1969 to 50,000 in 1988; a million by 1991 and 500 million by 2001. And today - 1.2 billion, or 19 per cent of the world's population use the internet. Conceived by the US Department of Defense in the 1960s, the internet, together with the World Wide Web, invented in 1989 by Brit techie, Tim Berners-Lee, has shrunk the world like no other invention.
Fridge, 1834
Jacob Perkins was the first to describe how pipes filled with volatile chemicals whose molecules evaporated very easily could keep food cool, like wind chilling your skin after a dip in the sea. But he neglected to publish his invention and its evolution was slow – fridges would not be commonplace for another 100 years.
Light bulb, 1848
Joseph Swan in fact developed a bulb before Thomas Edison, but the pair later joined forces and share credit for creating the gadget we perhaps take for granted more than any other.
Telephone, 1876
Frenchman Charles Bourseul first proposed transmitting speech electronically in 1854, but he was ahead of his time and it took another six years before Johann Reis used a cork, knitting needle, sausage skin and a piece of platinum to transmit sound, if not intelligible speech (that took another 16 years). Elisha Gray and Alexander Graham Bell raced to make the first working phone in the 1870s,
Mobile phone, 1947
There are more than two billion mobile phones in the world, and the EU is home to more "cells", as the American's call them, than people. It is difficult to quantify the economic and social impact of the device – of all the gadgets in the average person's arsenal, it is surely the one we would be worst off without. Those who disagree can blame Bell Laboratories for their invention; the firm introduced the first service in
Microscope, 1590
When the British polymath Robert Hooke published his 1665 masterpiece, Micrographia, people were blown away by its depictions of the miniature world. Samuel Pepys called it "the most ingenious book that I ever read in my life". Until then, few people knew that fleas had hairy legs or that plants comprised cells (Hooke coined the term "cell"). Zacharias Janssen, a Dutch spectacle maker, had invented the first microscope in 1590, although it was then regarded as a novelty rather than a revolution in science.
Computer, 1935-1938
Konrad Zuse builds Z1, world's first program-controlled computer. Despite certain mechanical engineering problems it had all the basic ingredients of modern machines, using the binary system and today's standard separation of storage and control. Zuse's 1936 patent application (Z23139/GMD Nr. 005/021) also suggests a von Neumann architecture (re-invented in 1945) with program and data modifiable in storage.
Syringe, 1844
Syringe devices have been in use since the 9th century, when an Egyptian surgeon used a glass suction tube to remove cataracts from a patient, but the first hypodermic syringes with needles fine enough to pierce skin did not appear until the 1840s. The Irish physician Francis Rynd used the first syringe to inject a sedative to treat neuralgia, revolutionising medicine with a single push of a plunger.
For the battery we must thank the frog. In the 1780s, the Italian physicist Luigi Galvani discovered that a dead frog's leg would twitch when he touched it with two pieces of metal. Galvani had created a crude circuit and the phenomenon was taken up by his friend, the aristocratic Professor Alessandro Volta, whose voltaic cells stacked in a Voltaic pile amazed Napoleon. The pile was also the first battery, whose successors power more than a third of the gadgets on this list.
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