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Results tagged with spacetime
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user 270355
Within relativity (both special and general), changes of reference frames can change both the notions of space and of time, with one depending on the other as well. As a consequence, it is necessary to treat both concepts in a unified manner. Hence the term spacetime.
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Why no gravity lens around planets?
If large mass causes a curvature around spacetime, then why don't we see a gravity lens around our planets? …
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