How to make a universe – with Harry Cliff
Ri Science Podcast
The Atomic Hypothesis
John dalton was the son of a weaver from quite a poor background. He noticed that if you react two different chemical elements together, they always react in fixed proportions. This is readly where we get the idea of atoms from. In the nineteenth century, the view was that for every element in the peredic table, there was a small, indivisible atom. But over the course at the very end of the nineteenth century and over the first few decades of the twentieth century, physicists doing experiments in university laboratories gradually took the atom apart. They found that the atom is not an indivisible nugget. It's got a nucleus at the centre, which is
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