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Results tagged with physical-constants
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user 345235
This tag is for questions relating to physical constants which are any of a set of fundamental invariant quantities observed in nature and appearing in the basic theoretical equations of physics. Accurate evaluation of these constants is essential in order to check the correctness of the theories and to allow useful applications to be made on the basis of those theories.
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Is cosmological constant really constant?
The default expectation is that the density of dark energy is constant, for theoretical reasons. That's why it was historically called a cosmological constant. If you take the Einstein field equations …
