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I thought light was not effected by gravity but by the increased distance it had to travel due to warping effect on time/space caused by gravity?
by Zergy 13y ago
I thought light was not effected by gravity but by the increased distance it had to travel due to warping effect on time/space caused by gravity?
- belorn 13y agoCorrect. Photons are responding to the curvature in space-time, not directly to the gravitational field. Doing a second check, light has inertia-mass, but not rest-mass.
- hobs 13y agoI was about to say, how else does a solar sail work?
- czr80 13y ago> Photons are responding to the curvature in space-time, not directly to the gravitational field In general relativity, space-time curvature is the gravitational field, so I'm not quite sure what distinction you're trying to draw?
- deleted 13y ago[deleted]
- fargolime 13y agoKeep in mind these descriptions are just interpretations of observations. Another intelligent civilization could explain the observations in a wholly different way. The observations show that light is affected by gravity (more precisely, by centers of gravitational attraction) the same as material objects are. We have alternate generally accepted ways of looking at this, such as the river model of space [1], where space is moving inward toward a center of gravitational attraction, carrying along in its "current" everything including light rays. [1] http://arxiv.org/abs/1204.0419 http://arxiv.org/abs/1204.0419