Dear ACE:

"ACE" wrote in message
oups.com...
THE SOLAR SAIL
Copyright 1984 to 2005 Allen C. Goodrich

The Solar Sail, which is being tested by Russia and the United
States,
for possible propulsion in interstellar space travel, is
additional
evidence
that no change of potential energy to kinetic energy of the
photon
takes place unless the potential energy is absorbed .The photon
does
not have mass ( kinetic energy).

Your facts are totally screwed up. A well evacuated radiometer
spins with the white side moving away from the light source.

David A. Smith