MEN OF SCIENCE
Every country is proud of the discoveries of its great scientists and inventors.Who can say how many lives have been saved because a Frenchman named Loius Pasteur made important discoveries about bacteria?Or because Alexander Graham Bell , an American, invented the first telephone?
Britain also has produced many great men of science.How many of them have you hears about?
You may know that Englishman who discovered the law of gravity when an apple fell from a tree on his head.He was Isaac Newton(1642-1727),one of the woeld''s greatest scientists.
Have you ever heard of Halley''s Comet?It was named after the great English astronomer , Edmund Halley(1656-1742), who predicted that it would appear in 1682, and it did!
You know how dangerous it is to have a
light burning where there is gas about.In a coal-mine , of course, it''s sure to cause an explosion.That''s why miners are grateful to Humphrey Davy(1771829), who inventeda safety-lamp which could be used to give light to miners without the danger of causing an explosion.He was the man who also discovered that "laughing-gas " could be used as an anaesthetic.
The man who first proposed the Theory of Evolution was an Englishman named Charles Darwin (1809-1882).His book "The Origin of Species",published in 1859, is known throughout the world.
The Radar was discovered by the English phisicist Edward Appleton (1892-1965), the
jet engines were discovered by Frank Whittle , the antiseptics were discovered by Lord Lister (1827-1912) and the penicillin was discovered by Alexander Fleming, but not used for treatment until the 1940s.
Oh, I was forgetting.The TV
set was discovered by John Baird(1888-1946), so I ''m grateful to him.
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