Philip Ball looks at how a little-known paper by Niels Bohr demonstrates the turmoil in physics on the brink of quantum ...

When an electron dropped from a high-energy orbit to a lower-energy one, it gave out light with an energy equal to the ...

A New Zealand mayor has invited the American ambassador for a history lesson, after US President Donald Trump appeared to imply it was the US that split the atom – which it is not alone in and ...

Niels Bohr was born and educated in Copenhagen ... Bohr began to work on the problem of the atom's structure. Ernest Rutherford had recently suggested the atom had a miniature, dense nucleus ...

Ernest Rutherford's family emigrated from England ... Acceptance of this model grew after it was modified with quantum theory by Niels Bohr. For his work with radiation and the atomic nucleus ...

Niels Bohr adapted Ernest Rutherford's nuclear model. Bohr did calculations that led him to suggest that electrons orbit the nucleus in shells. The shells are at certain distances from the nucleus.