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Ulysees
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According to wikipedia below:
> Huygen's principle states that each point of an advancing wave front is in fact the center of a fresh disturbance and the source of a new train of waves; and that the advancing wave as a whole may be regarded as the sum of all the secondary waves arising from points in the medium already traversed.
http://en.wikipedia.org/wiki/Photon_dynamics_in_the_double-slit_experiment
Then how is it possible that laser light moves in a narrow beam with very small dispersion sideways?
Can radiowaves be produced to be like that? Cause that would make an extremely high directivity antenna for satellite communications etc.
> Huygen's principle states that each point of an advancing wave front is in fact the center of a fresh disturbance and the source of a new train of waves; and that the advancing wave as a whole may be regarded as the sum of all the secondary waves arising from points in the medium already traversed.
http://en.wikipedia.org/wiki/Photon_dynamics_in_the_double-slit_experiment
Then how is it possible that laser light moves in a narrow beam with very small dispersion sideways?
Can radiowaves be produced to be like that? Cause that would make an extremely high directivity antenna for satellite communications etc.
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