The first hundred years

Petar Grujić

B. Jakobsson, Roberta Ghetti

The optical phenomenon of interferometry dates back to ∼1680 when Robert Hooke first described Newton rings. An elaborated explanation of interferometry appeared however only more than a hundred years later, when Thomas Young performed double-slit experiments (Figure 1), actually to try to observe the particle nature of light.

Sergey Mikhailovich Troshin

The notion of spin entered physics about one hundred years ago when Uhlenbeck and Goudsmit introduced the internal degree of freedom for the electron- spin as a real physical characteristics instead of the so called non-mechanical strength used at first by Pauli under formulation of his famous principle [...]

Filip Wojcieszyn