At the beginning of the 20th century, scientists realized it was both ... Electrons are 1,800 times lighter than the lightest atom (something discovered by Thomson’s father J.J. Thomson ...

In the 1930s, scientists had begun to unravel the secrets of the atom. Some of them had followed the research ... In many ways, it marked a turning point in the 20th century—as well as a new era: the ...

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

Jenny Sparks has brought back the titular Spirit of the Twentieth Century to take on the threat of Captain Atom, whose personal crisis has driven him to take over an unsuspecting bar and make ...