Ephraim Fischbach

Ephraim Fischbach
Born1942 (1942)
Brooklyn, New York
NationalityAmerican
Alma mater
Known for
AwardsFellow of the American Physical Society
Scientific career
Academic advisorsHenry Primakoff
Doctoral studentsHarry Kloor

Ephraim Fischbach (born 1942) is an American physicist and a professor at Purdue University. He is best known for his attempts to find a fifth force of nature[1] and his research relating to the detection of neutrinos.[2] He has also done work relating to the prediction of solar flares[3] and the detection of radiation by cell phones.[4]

Fischbach studies variation in radioactive decay rates, suggesting that neutrino emission from the Sun reduces the rate of nuclear decay.[5] He reanalysed the Eötvös experiment, which he saw as evidence for a fifth physical force.[6] However, in 1992, he and Carrick Talmadge conducted an experiment which found no compelling evidence for a fifth force.[7]

Fischbach has been a fellow of the American Physical Society since 2001, and a professor at Purdue since 1979. He also was an associate professor at the Institute for Theoretical Physics in Stony Brook, New York from 1978 to 1979. He received a B.A. in physics in 1963 from Columbia University and a Ph.D. in 1967 from the University of Pennsylvania.

  1. ^ Wilford, John Noble (Oct 17, 1986). "PHYSICISTS CHALLENGE THEORY OF A 'FIFTH FORCE' BEYOND GRAVITY". New York Times.
  2. ^ Foltz, Aulden (December 1, 2016). "Physicists propose new system for detecting neutrinos". Stanford Daily.
  3. ^ WAMC Northeast Public Radio (November 1, 2012). "Dr. Ephraim Fischbach, Purdue University – Predicting Solar Flares". WAMC Northeast Public Radio.
  4. ^ "Ephraim Fischbach". Bulletin of the Atomic Scientists. Retrieved 2024-01-10.
  5. ^ Madrigal, Alexis C. (August 25, 2010). "Maybe Radioactive Decay Rates Aren't Physical Constants". The Atlantic.
  6. ^ Fischbach, Ephraim; Sudarsky, Daniel; Szafer, Aaron; Talmadge, Carrick; Aronson, S.H. (6 January 1986). "Reanalysis of the Eötvös experiment". Physical Review Letters. 56 (1): 3–6. Bibcode:1986PhRvL..56....3F. doi:10.1103/PhysRevLett.56.3. PMID 10032514.
  7. ^ Fischbach, Ephraim; Talmadge, Carrick (March 19, 1992). "Six years of the fifth force". Nature. 356 (6366): 207–215. Bibcode:1992Natur.356..207F. doi:10.1038/356207a0. ISSN 0028-0836. S2CID 21255315.