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Old September 16th 08, 10:23 PM posted to rec.radio.amateur.antenna
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Default Equilibrium and Ham examinations
Rectifier wrote:
Radiation has no mass ...

On the contrary, radiation is photons which indeed
do have mass when traveling at the speed of light,
which radiation does. The pressure of photons from
the sun can actually be used to propel a sail boat
through space.

http://www.nasa.gov/mission_pages/sm...l_feature.html
--
73, Cecil http://www.w5dxp.com
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