Photo: Niels Bohr's research notes for his new atomic ... give off energy and eventually spiral down into the nucleus, making the atom collapse. Or the electrons could be knocked out of position ...

Bohr began to work on the problem of the atom's structure. Ernest Rutherford had recently suggested the atom had a miniature, dense nucleus surrounded by a cloud of nearly weightless electrons.

These additions made sense in Bohr’s picture of the atom: if the electron is moving along a circular orbit around the atomic nucleus, it would have an angular momentum; and as a charged body in ...

The New Zealander had discovered the atomic nucleus in 1911 and further investigations by Bohr led to his quantum model of the atom where electrons travel around the nucleus in certain orbits. When ...

Bohr's 'solar system' model of the atom is the way that most people think ... pushed up to higher levels (at bigger distances from the nucleus). In time, they jump back down to a lower level ...

In 1913, Niels Bohr, along with Ernest Rutherford, presented a model of the atom, suggesting it to be a dense nucleus surrounded by orbiting electrons. Though this "Bohr model" of the atom is now ...

The word magic is not often used in the context of science. But in the early 1930s, scientists discovered that some atomic nuclei – the center part of atoms, which make up all matter – were more ...