The English theoretical physicist Paul Dirac is described as having made fundamental contributions to the early development of what?
To which astronomer and cosmologist is what became known as the "big bang theory", the currently leading cosmological theory as modified by George Gamow, attributed?
Who is the New Zealand-born physicist whose discoveries include most of the great advances in physics between 1899 and 1930?
In 1938, after receiving the Nobel Prize, which physicist emigrated to the USA, protesting the oppressive regime of his homeland?
