Word: quantum
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...separate pulses and uniform quantities which were subsequently called quanta. Planck's constant, h, is equal to .00000000000000000000000000655 erg-seconds. For any sort of light the energy multiplied by the period of vibration is always equal to h. To a physicist grouping within the atom, h and the quantum mechanics which have grown up around it are as important as bait, hook & line to a fisherman...
...this abyss, Dr. Swann had recourse to modern laboratory experiments which show radiation transformed back into matter. Every physicist under 35, he declared, would agree with him that such demonstrations are valid. What apparently happens is that the quantum of radiation, scoring a hit on an atomic nucleus, vanishes and gives birth to an electron and a positron-i.e., particles of matter. The quantum of radiation is "mathematically irritated" by the atomic nucleus into giving up its existence. Here Dr. Swann ran into the difficulty that in his sea of radiation there would be no atomic nuclei to provide...
...Cambridge University's Cavendish Laboratory works a young Briton of Swiss extraction who is indisputably one of the few great mathematical logicians in the world. His Principles oj Quantum Mechanics is a monument of human cerebration. That book is utterly incomprehensible to ordinary men who had never heard of its author until Paul Adrien Maurice Dirac won a Nobel Prize last year. Only a few of the ablest scholar-scientists can follow the chain of symbolic reasoning in Principles of Quantum Mechanics, and among them none is more articulate, more authoritative, more sensible than Sir James Hopwood Jeans, president...
World great is Max Planck because he conceived the quantum theory, an exploit of pure science. Last week he listened with other German scientists in smoky Diisseldorf to Nazi Minister of Science, Art and Education Dr. Bernhard Rust, who felt called upon to deny that Hitlerism is hostile to Science...
...Vleck, the well-known physicist, graduated from Wisconsin in 1920, and took his Masters' and Doctor's degrees here. After serving an instructorship here, he taught at the University of Minnesota, Leland Stanford, and finally at Wisconsin. He has done research work on the quantum theory and is the author of many scientific pamphlets. His duties next year will be divided between mathematics, quantum mathematics, and his research work...