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John Reppy

John L. Wetherill Professor of Physics Emeritus

Low temperature phyiscs; bose condensation; critical phenomena; superfluidity in 4He, 3He and supersolids; low dimensional systems; space science


The main interest of our group is directed toward an understanding of the macroscopic quantum properties of superfluid 3He, 4He, and the super solid state of solid 4He. The problems of Bose-Einstein condensation, inhomogeneous superfluid boundary conditions and the study of phase transitions in systems of reduced dimensionality are current research topics of my group. Persistent current studies, torsional oscillator measurements, nano kelvin thermometry, and propagation of 3rd and 4th sound are examples of the various experimental techniques used in this work. The group has a close association with those of Professors Lee and Parpia.

Our group will consider a new graduate student.

Awards and Honors

  • NASA Distinguished Public Service Medal, 2000
  • Fellow, Japan Society for Promotion of Science, 2000
  • Fellow, American Academy of Arts and Sciences
  • Fellow, American Association for Advancement of Science
  • Fellow, American Physical Society
  • Fellow, Institute of Physics
  • Member, National Academy of Sciences
  • Fellow, New York Academy of Sciences
  • Sigma Xi
  • Fritz London Memorial Award, 1981
  • U.K. Science Research Council Senior Research Fellow, 1979-80, 1989-90
  • Fulbright-Hays Special Fellow, 1978
  • Guggenheim Fellow, 1972-73, 1979-80
  • NSF Postdoctoral Fellow, 1961-62

Educational Background

  • John L. Wetherill Professor of Physics Emeritus, 2005-present
  • John L. Wetherill Professor of Physics, Cornell University, 1987-2005
  • Visiting Appointments at Massachusetts Institute of Technology, University of Manchester, and University of Sussex
  • Professor, Physics, Cornell Unviersity, 1969-87
  • Visiting Scientist, AT&T Bell Laboratories, 1983
  • Associate Professor, Physics, Cornell University, 1966-69
  • Assistant Professor, Physics, Yale University, 1962-66
  • Ph.D., Yale University, 1961
  • M.S., University of Connecticut, 1956
  • B.A., University of Connecticut, 1954