This Week on Science Seen

Going Up?

It is ‘an engineering project on a gargantuan scale.’ So says American physicist, P.K. Aravind. ‘By far the largest megaproject ever undertaken,’ says another American physicist, Adam Brown. Each is writing of an antigravity device called a space elevator. The picture shows how it’s supposed to work. The centrifugal pull of a counterweight holds up […]

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The Problem of Kaluza and Klein

In the 1920s two mathematicians, Theodor Kaluza and Oskar Klein, had an idea: What if there’s an extra space dimension? They wanted to unify the fundamental forces―the only two known in their time―of electromagnetism and gravity. They thought a fourth dimension ought to do the trick. It almost did. Where is this fourth dimension? K-K […]