Class 9. Dive 18 (April, 12)

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...............was invented by the electrical engineer John Logie Baird. 

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John Logie Baird found out that light could be converted into electrical impulses, making it possible to ...............such impulses over a distance and then reconvert them into light

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What invention is the most widely used and most useful of all leisure-inspired invention?

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Who produced the first petrol-driven car?

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To what invention is Alessandro Volta connected to?

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The camera obscura photographic principle was described by ..................

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What year was camera photography produced?

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Edinburgh-born scientist Alexander Graham Bell ................... of the telephone in 1876

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Who produced the first working telephone?

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Which invention is connected to calculators, windows, icons, word processors, the Internet and e-mail?

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What invention alllows travelling all over the world and reaching easily distant lands?