In 1925, he and his partner George Ullenbeck proposed the theory of atomic spin — a major advancement in nuclear physics and one which both would be nominated for a Nobel Prize no less than 39 ...

For thousands of years, thinkers argued about whether light is made of particles or waves. At the beginning of the 20th century, scientists realized it was both: massless particles and waves. An ...

Lise Meitner developed the theory of nuclear fission, the process that enabled the atomic bomb. ... Dr. Meitner and Otto Hahn in a Berlin laboratory in the early 20th century.

String theory is an attempt to unite the two pillars of 20th century physics — quantum mechanics and Albert Einstein's theory of relativity — with an overarching framework that can explain all ...

But another 20th century scientist deserves serious consideration. John von Neumann, who was born in 1903 in Hungary and died in 1957 in the U.S., never won a Nobel Prize. His accomplishments ...

For thousands of years, thinkers argued about whether light is made of particles or waves. At the beginning of the 20th century, scientists realized it was both: massless particles and waves. An ...