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Georg Joos ( 25.05. 1894 - 20.05.1959); full professor for experimental physics at Technical University of Munich. Georg Jakob Christof Joos (25 May 1894 in Bad Urach, German Empire – 20 May 1959 in Munich, West Germany) was a German experimental physicist.
By producing high-resolution diffraction gratings in a basement room at Zeiss, Franz Meyer came into contact with Georg Joos, who had been a professor of theoretical physics at the University of Jena since 1924. Joos wanted to experimentally prove that Einstein's theory of relativity was exactly valid despite apparently contradictory results.
Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain, and predict natural phenomena. This is in contrast to experimental physics , which uses experimental tools to probe these phenomena.
For example, Georg Joos reprised Miller's experiment using a very similar setup (the arms of his interferometer were 21 m vs. the 32 m in the Miller experiment) and obtained results that were 1/50 the magnitude of those from Miller's (see Michelson–Morley experiment#Subsequent experiments).
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Recent progress in the physics of the solid state 1944 Coal Research, Sept 1944. p. 39-47 BMFRS243 Unification of the theories of photon and meson 1944 Nature [publication 51] BMFRS244; doi:10.1038/154764a0: Theoretical Physics in the U.S.S.R. 1945 Nature [publication 52] BMFRS250; doi:10.1038/156325a0: On the quantum theory of pyroelectricity 1945
The Large Scale Structure of Space–Time is a 1973 treatise on the theoretical physics of spacetime by the physicist Stephen Hawking and the mathematician George Ellis. [1] It is intended for specialists in general relativity rather than newcomers.
On the other hand, theoretical physics emphasizes the links to observations and experimental physics, which often requires theoretical physicists (and mathematical physicists in the more general sense) to use heuristic, intuitive, or approximate arguments. [6] Such arguments are not considered rigorous by mathematicians.