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Hypothetical situation in which, for simplification, only some physical aspects are considered in order to further understand or reveal contradictions between the laws governing them.

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Is Red-Shift experiment correct?

The experiment is correct. Well, what is really correct is the final interpretation of the experiment. Radiation gets redshifted in the gravitational fields. It's one of the well-known consequences of …
Luboš Motl's user avatar
26 votes
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Schrödinger's cat; why was it necessary?

First, a historical subtlety: Schrödinger has actually stolen the idea of the cat from Einstein. Second, both men – Einstein and Schrödinger – used the thought experiment to "explain" a point that wa …
Luboš Motl's user avatar