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 also tells us that chlorine has 18 neutrons (35 - 17) and, as the number of electrons and protons are equal in a neutral atom ... is the same as its proton (atomic) number.

Bohr began to work on the problem of the atom's structure. Ernest Rutherford had ... There were a few problems with the model, however. For example, according to classical physics, the electrons ...

independently of any atomic model:—(i) Three distinct regions of intra-atomic electrons exist, the number of which (say P, Q, R) may be calculated for each atom from the periodic system ...

ENGLISH readers will welcome this authoritative account by Prof. Bohr of the application of his theory to atomic structure. The essay has been translated from the Zeitschrift fur Physik by L.

They have demonstrated that nuclear polarisation does not impede the study of muonic atoms. It clears a major obstacle that ...

are now re-examining the models used to describe atomic nuclei, as the experiments suggest that nuclear structure is far more complex than previously thought. Professor Paul Stevenson, lead ...

The two collaborations combined their complementary data on the proton's inner structure to improve calculations of a phenomenon in atomic physics: the hyperfine splitting of hydrogen. An atom of ...