John G. Cramer
| John G. Cramer | |
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| Born | John Gleason Cramer, Jr. 24 October 1934 Houston, Texas, United States |
| Residence | Seattle, Washington and Westport, New York, United States |
| Citizenship | United States |
| Nationality | American |
| Fields | Nuclear physicist, Quantum physics, Ultra-relativistic heavy ion physics, HBT interferometry, novelist, popular science writer |
| Institutions | University of Washington |
| Alma mater | Rice University |
| Doctoral advisor | Calvin M. Class |
| Known for | Transactional Interpretation of Quantum Mechanics, the novels Twistor and Einstein's Bridge, Member, External Council of NIAC/NASA Innovative Advanced Concepts Activity |
| Spouse | Pauline Cramer |
| Children | Kathryn Cramer |
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Website John Cramer's Home Page |
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John Gleason Cramer, Jr. (born October 24, 1934) is a Professor Emeritus of Physics at the University of Washington in Seattle, Washington. He has been an active participant with the STAR (Solenoidal Tracker At RHIC) Experiment at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory, and the particle accelerator at CERN in Geneva, Switzerland.
John Cramer was born in Houston, Texas. He attended Mirabeau B Lamar High School in Houston, and graduated with a BA in Physics from Rice University in 1957. He continued his studies, graduating with a MA in Physics from Rice University in 1959 and a Ph.D. in Physics from Rice University in 1961.
Cramer served as a post doctoral fellow at Indiana University from 1961–63, and worked as an assistant professor at the same university from 1963-64. He served an assistant professor at University of Washington from 1964–68, as an associate professor from 1968–74 and was appointed as a full professor in 1974.
From 2007 to 2014, Cramer investigated the possibility that quantum nonlocality might be used for communication between observers through the use of switchable interference patterns. In the course of this work, he gained new understanding of the "show stopper" within the quantum formalism that prevents such nonlocal signaling. For each interference pattern, Nature also provides and superimposes an "anti-interference pattern". These are always combined in a way that "erases" potential nonlocal signals. The two interference patterns complement each other, resulting in no perceptible interference pattern. Measurement changes can dramatically modify the individual interference patterns, but always so that this erasure occurs. In this way, Nature is protected from the possibility of retrocausal signaling and its consequences and paradoxes.
Cramer makes regular appearances on the The Science Channel and on NPR Science Friday.
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