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.
[6] However, in 1992, he and Carrick Talmadge conducted an experiment which found no compelling evidence for a fifth force.
He also was an associate professor at the Institute for Theoretical Physics in Stony Brook, New York from 1978 to 1979.