On May 16, 1960, American physicist Theodore Maiman presents the world's first operating laser at Hughes Research Laboratories, Malibu, California. Today, lasers are present everywhere, ranging from common consumer devices such as DVD players, laser printers, and barcode scanners to professional laser devices for surgery and various other skin treatments, or in industry for cutting and welding materials. Actually, it was Albert Einstein, who has laid the theoretical foundations for the laser in his 1917 paper Zur Quantentheorie der Strahlung (On the Quantum Theory of Radiation).
On October 7, 1885, Danish physicist and Nobel Laureate Niels Bohr was born. Bohr made foundational contributions to understanding atomic structure and quantum mechanics, for which he received the Nobel Prize in Physics in 1922.
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Relativity: Einstein's theory of special relativity in multimedia tutorial. The introductory level takes 10 minutes, but has links to over 40 explanatory pages giving greater depth and detail. Einstein Light has a simple introduction to Galilean relativity, electromagnetism and their incompatibility; it explains how Einstein's relativity resolves this problem, and develops time dilation, length contraction and other consequences of relativity for our ideas of time, space and mechanics, including the twin paradox and E=mc2.
P. Buonsante, F. Massel, V. Penna, and A. Vezzani. Abstract Book of the XXIII IUPAP International Conference on Statistical Physics, Genova, Italy, (9-13 July 2007)