Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: antimatter



William J. Larson <Bill_Larson@compuserve.com> wrote:

I'm not aware of experimental evidenve of the gravitational properties
of antimatter. Since gravity is so weak this is a very hard experiment
to do. Has it been done and I missed it?

Yes, it has. Jim Lockhart and Bill Fairbank did this experiment at Stanford in
the mid-1970s. The positrons fall down, not up.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++

Roger A. Freedman
Department of Physics and College of Creative Studies
University of California, Santa Barbara

Mailing address:
Department of Physics
UCSB
Santa Barbara CA 93106-9530

E-mail: airboy@physics.ucsb.edu
WWW: http://www.physics.ucsb.edu/~airboy/
Voice: (805) 893-2345
FAX: (805) 893-3307
Voicemail: (800) 344-3147 x4322