A Los Alamos collaboration has replicated an important but largely forgotten physics experiment: the first deuterium-tritium ...

A breakthrough clinical trial in Japan reveals that a vitamin B3 derivative significantly improves symptoms of the rare ...

A letter from renowned physicist Albert Einstein outlining his own role in the development of the atomic bomb and his ...

The “Bell test” was devised in the 1960s to uncover what’s going on in the quantum world, but it continues to be relevant today, says Karmela Padavic-Callaghan ...

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Why even physicists still don’t understand quantum theory 100 years on. Bohr started with a picture in which electrons circle the atomic nucleus, rather as planets orbit a star.

Einstein, Bohr and the war over quantum theory. But this framework still leaves us with problems of ‘naturalness’. In the effective-field-theory approach, ...

Bohr entered the story in 1912 when, working in the laboratory of Ernest Rutherford in Manchester, he devised a quantum theory of the atom. In Bohr’s picture, the electrons encircling the atomic ...

Bohr acknowledged that his atomic model was an approximation and that further work in quantum theory would be needed to fully understand the behavior of atoms, particularly multi-electron systems.