Question by Richard P: If light ( photons ) does not have mass how would light be use to push a solar sail in space?
Best answer:
Answer by cheez-it
Although photons do not have mass, they still carry momentum.
Add your own answer in the comments!
(may be broke/outdated!)
Question by Richard P: If light ( photons ) does not have mass how would light be use to push a solar sail in space?
Best answer:
Answer by cheez-it
Although photons do not have mass, they still carry momentum.
Add your own answer in the comments!
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3 Responses
Actually they do have some very slight mass. That’s were the energy comes in.
A solar sail utilizes what is called solar wind. For how this works check out wikipedia.com.
Nice question.
Photons, by modern definition, does not have mass but it surely has energy and momentum, which is capable of exerting pressure on a surface
The concept of solar sail is sometimes mistaken as space crafts that are built to use solar wind to sail through space. But in actuality, it is not the solar wind but “radiation pressure”, that propels the space craft. So more than saying the photons pushes the craft, its actually the reflection of electromagnetic radiation from the space craft’s mirror like solar sails that pushes the craft.