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Philipp Frank
(20 Mar 1884 - 22 Jul 1966)
Austrian-American physicist and mathematician whose work covered a wide range of mathematics, including Hamiltonian geometrical optics, Schrödinger wave mechanics, and relativity.
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Science Quotes by Philipp Frank (1)
If in the description of an experimental arrangement the expression 'position of a particle' can be used, then in the description of the same arrangement the expression 'velocity of a particle' can not be used, and vice versa. Experimental arrangements, one of which can be described with the help of the expression 'position of a particle' and the other with the help of the expression 'velocity' or, more exactly, 'momentum', are called complementary arrangements, and the descriptions are referred to as complementary descriptions.
— Philipp Frank
Modern Science and its Philosophy (1949), 163-4.
See also: | Physics (65)
