John L. Heilbron describes the route that led Niels Bohr to quantize electron orbits a century ago. You have full access to this article via your institution ...

Photo: Niels Bohr's research notes for his new atomic theory Rutherford's find came from a very strange experience. Everyone at that time imagined the atom as a "plum pudding." That is, it was roughly ...

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Skimming through the latest issue of CavMag – a glossy newsletter about the latest developments at the Cavendish Laboratory, Cambridge – I at first thought I had misread an article that stated: “In ...