Tag: General relativity
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The Bending of Starlight as Predicted by Einstein
Light falls in a gravitational field, for instance, a laser beam fired horizontally across a room will be closer to the ground on the side where it hits the far wall than it was when it left the laser. Likewise, a ray of light that is passing over a massive object like the sun will…
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The Equivalence Principle & Black Holes
The equivalence principle is one of the laws of nature and it is connected with the nature of gravitation. In general relativity theory, the equivalence principle states that a gravitational field is locally equivalent to an accelerated frame. To be precise, it says that a freely falling observer or system will not experience the effects…