Ephraim Fischbach

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Ephraim Fischbach (born March 29, 1942 in Brooklyn ) is an American physicist.

Fischbach studied at Columbia University (Bachelor in 1963) and at the University of Pennsylvania , where he made his master's degree in 1964 and received his doctorate in 1967. He then went to the State University of New York at Stony Brook (SUNY) and 1969/1970 at the Niels Bohr Institute in Copenhagen . In 1970 he became an Assistant Professor, 1974 Associate Professor and 1979 Professor at Purdue University . 1985/86 he was visiting professor at the University of Washington and 1978/79 at SUNY.

Fischbach is known for his experiments from the 1980s in the style of the Eötvös experiment , with which he wanted to test the possibility of a fifth force .

Recently he has been looking for clues to new physical forces in the time dependence of nuclear decay parameters (in which he reported in 2008 the discovery of solar periodicities in the decays of certain isotopes and which, according to Fischbach, may be related to the solar neutrino flux) and in precise measurements of the Casimir force ( thus possible modifications of the Newtonian gravitational force at short distances).

In 2001 he became a Fellow of the American Physical Society .

Web links

Individual evidence

  1. E. Fischbach, D. Sudarsky, A. Szafer, C. Talmadge, SH Aronson, Reanalysis of the Eötvös Experiment , Phys. Rev. Lett. 56: 3-6 (1986). Fischbach, Carrick Talmadge 10 years of Fifth Force , 1996, online
  2. Jenkins, Buncher, Gruenwald, Fischbach, Krause, Matthes Evidence for Correlations Between Nuclear Decay Rates and Earth-Sun Distance , Astrop.Phys., Volume 32, 2009, p. 42
  3. ^ Decca, Lopez, Chan, Fischbach, Krause, Jamell Constraining New Forces in the Casimir Regime Using the Isoelectronic Technique , Phys. Rev. Lett., Volume 94, 2005, p. 240401