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Old July 28th 12, 02:15 PM posted to rec.radio.amateur.antenna
W5DXP W5DXP is offline
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Default UK earthling - was: Dipole-2 different wire sizes?

On Saturday, July 28, 2012 2:59:06 AM UTC-5, Szczepan Bialek wrote:
Light is not coherent.


On the contrary, any single frequency light, i.e. single color light, is coherent. Most of the laser light in an interferometer is coherent. Otherwise, steady-state interference could not be achieved.
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73, Cecil, w5dxp.com