![]() Notably the event was held in both East and West Berlin, marking “the first time scientists from the two sectors of Germany had collaborated on a common project. Eleven years later, Physics Today reported on a celebration of Planck’s 100th birthday. ![]() In 1944 Planck’s house in Berlin was destroyed by bombs, and one of his sons was implicated in a conspiracy to assassinate Hitler and executed the following year. With the rise of Adolf Hitler in the 1930s, Planck struggled to preserve German physics and was a vocal opponent of Hitler’s racial policies. Bohr developed the Bohr model of the atom, in which he proposed that energy levels of. Bohr was also a and a promoter of scientific research. In 1929 he received the Royal Society’s Copley Medal. Niels Henrik David Bohr nels po 7 October 1885 18 November 1962) was a who made foundational contributions to understanding, for which he received the Nobel Prize in Physics in 1922. Planck also served as permanent secretary of the Prussian Academy of Sciences and as president of the Kaiser Wilhelm Society (now the Max Planck Society). A strong proponent of the German physical community, he was one of the first prominent physicists to support Einstein’s theory of special relativity and helped bring Einstein and others, such as Max von Laue, to Berlin. In recognition of his discovery of energy quanta, Planck was awarded the 1918 Nobel Prize in Physics. Planck’s insight not only accurately explained experimental data but also provided impetus to the new quantum theory. His research into blackbody radiation and the first and second laws of thermodynamics led to his discovery in 1900 that radiation is absorbed and emitted in discrete packets, called quanta, whose energy is proportional to frequency. After teaching at the Universities of Munich and Kiel, he accepted a teaching appointment in 1889 at the University of Berlin, where he would remain until retiring with emeritus status in 1926. ![]() ![]() Planck studied physics at the Universities of Berlin and Munich, earning his doctorate in 1879 at the age of 21. Born on 23 April 1858 in Kiel, Germany, theoretical physicist Max Planck was a founder of quantum theory. ![]()
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