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Originally posted by Motile
OK im going to say this one last time you can NOT BEND LIGHT, it is a stream of particles, its like saying how do I bend sand?
From the point of view of general relativity and
Einstein's Equivalence Principle, light bends as a result of the curvature of space-time caused by the presence of a mass.
Any body with mass bends spacetime to a degree, and thus exerts SOME negligible change upon the path of light.
When light has to travel through a material, such as water, it moves somewhat slower. Putting the brakes on the speed of light causes the light to bend as it passes from one medium (such as air) to another (such as water). This is called refraction.
LIGHT, is a stream of particles, its like saying how do I bend sand? YOU CANT, you can only bend the path the light is taking.
From a quantum mechanical point of view The limit of this bending is reached when the central mass is great enough to cause the curvature of space-time to be so great that the light bends back in a loop of limited height.
When this limit is reached one has a black hole and the limited height is called an event horizon. For more info. check out Stephen Hawkings book "A brief History of Time" or Edward Teller's book "Dark Secrets of Physics". Both have excellent discussions on these matters.
Originally posted by Shadow88
how would one make an object oscillate at the speed of: