
Who Discovered Atom
They are as small as one-Angstrom diameter hydrogen, or as large as the heavyweight uranium atom, which is 238 x heavier than hydrogen. They are...
Inventions and Inventors
They are as small as one-Angstrom diameter hydrogen, or as large as the heavyweight uranium atom, which is 238 x heavier than hydrogen. They are...
Neutrinos are among the most elusive of elementary particles. They were not detected until about 25 years after they were first suggested to exist. Prediction...
Niels Bohr, Danish Scientist and Teacher, of the Atomic Structure Fame. Brief biography and philosophy of Niels Bohr, famous for the atomic structure model, the...
The Discovery of the Neutron. In 1932, James Chadwick proved that the atomic nucleus contained a neutral particle which had been proposed more than a...
The Study of the Smallest Things in the Ancient World. Atoms, of course, have existed since the beginning of time. Man’s study of them, however,...
In order to understand many phenomena in the study of chemistry it is important to know how atoms are made up. One of the building...
J.J. Thompson and the First Subatomic Particle. The first discovery of a subatomic particle would come in 1897, when J.J. Thompson first discovered evidence for...
Gaining a Perspective of Atomic Sizes. Much of the difficulty scientists had in discovering, and then proving the existence of, atoms, is their size. Something so...
Calculating Avogadro’s Constant Jean Perrin brilliantly confirmed Einstein’s ideas on Brownian motion by the empirically calculating Avogadro’s Constant, conclusively proving Dalton’s atomic theory. History of Atomic...
John Dalton English Chemist, Meteorologist, Physicist, Teacher. Brief biography of John Dalton, scientist and weather pioneer who established the modern concept of atoms known as...