Nature of electromagnetic radiation, photoelectric effect, spectrum of the hydrogen atom, Bohr model of a hydrogen ... Qualitative analysis - Detection of nitrogen, sulphur, phosphorus and halogens.

J.J. Thomson — a professor of experimental physics at the University of Cambridge, who in 1897 discovered the electron and in 1904 proposed a model of the atom — was the first person to be ...

Bohr model of a hydrogen atom - its postulates ... Qualitative analysis - Detection of nitrogen, sulphur, phosphorus, and halogens. Quantitative analysis (basic principles only) - Estimation ...

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

Antimatter is a fascinating kind of matter made up of antiparticles, which have a mass equivalent to that of their normal ...

Interactions between atoms and light rule the behavior of our physical world, but at the same time, can be extremely complex.

A small town mayor in New Zealand has picked a nuclear fight with Donald Trump, after the freshly sworn-in U.S. president heaped praise on American scientists for splitting the atom. The mayor of ...

WELLINGTON, New Zealand — Among other false and misleading claims in U.S. President Donald Trump’s inauguration addresses on Tuesday, his declaration that Americans “split the atom ...

"This is saying, to some respect, that our model of cosmology might be broken." There are two gold-standard methods for working out the Hubble constant — the value that quantifies the speed of ...