( See also Archimedean solid.)Īrchimedes made important contributions to hydraulics, the study of how liquids behave when they are in motion. He discovered the relation between the surface area and volume of a sphere and those of its circumscribing cylinder. This gifted Greek mathematician and inventor once said, “Give me a place to stand and rest my lever on, and I can move the Earth.” He also invented the compound pulley and Archimedes screw.Īrchimedes was a brilliant mathematician who helped develop the science of geometry. The first scientist to recognize and use the power of the lever was Archimedes. There she goes, slowly and steadily to the boat down there but what's in the boat? We're doing this as a controlled experiment but setting fire to stuff in your back garden, is a no-no. It just bursts into flames and then disappears. You remember me using this stuff as a magician. Firstly this stuff, fuse wire and that we can ignite in here but then that'll take the flame outside where we can light the boat at a safe distance. That's why I've got two other things to show you. Well we can't exactly set fire to a boat in here though can we? So that's kind of like your sun and this is the reflector which is gonna be generating the heat et cetera, yes? Pop your safety specs on because what we've got here is a heat lamp.Īnd we're gonna use this along with this other mirror as our artificial sun. ![]() Where are you going to find a big red boat. I've actually got a specially shaped mirror here for you. By cleverly positioning mirrors, Archimedes caught the sun's rays and concentrated them to make one amazingly hot heat ray.' '2000 years ago Archimedes made a special heat ray to defend his city walls against attack from Roman ships. "He set to catch the full rays of the sun at noon." He's saying here that he set fire to boats. I mean there's no doubt, Archimedes was a really clever bloke. 'Until Archimedes came along more than 2000 years ago, building a ship that would float well, was always a trial and error operation.' So what your saying is, basically you get some light and fluffy marshmallows you get loads of them for 100g.Įxactly, and Archimedes figured out that, the more of a material you get for that certain weight, the more likely it is to float. He knew that different materials could weigh the same but you get different amounts of material for that same weight. I mean, we're not complaining or anything Fran but what's all this got to do with Archimedes? Well the thing is, his solution didn't just allow him to work out whether crowns were made out of pure gold or not, it allowed him to figure out why things float and why things sink and that is much more useful. So it was at that moment in the bath that Archimedes solved the problem.īut why did he get so excited about that? ![]() ![]() So Archimedes was working on a problem that had been set by the king because the king didn't know whether his crown was made of pure gold or not. If only Fran, our genius scientist, was here to tell us more. In Greek, that means "I've got it, I've got it!" He was so excited about solving this problem that he jumped out of the bath, nudey, shouting out, "Eureka, eureka!" You might know the story of Archimedes being in a bath nd coming up with a fantastic idea that helped him solve a problem that had been puzzling him for ages. 'He came up with brilliant theories about why objects float and he built amazing machines to help defend the kings city against attack.' ![]() He was so clever, he was hired to solve tricky problems by the king of Syracuse. 'Archimedes was a genius when it came to maths, physics and engineering. Born a ridiculously long time ago around the year 287 B.C. 'Archimedes was a Greek guy with a great beard. Ladies and gentlemen, we give you, Archimedes. Not only was he a fantastic mathematician and engineer but his genius machines are still being used today. He was famous for coming up with the genius idea whilst in the bath. You join me in the bath where today we go inside one of the greatest scientific minds this world has ever seen.
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