Dependent Physical Constants
The following list is based on the 2006 CODATA evaluation; for the constants listed below, more than 90% of the uncertainty is due to the uncertainty in the value of the Planck constant, as indicated by the square of the correlation coefficient (r2 > 0.9, r > 0.949). The Planck constant is (with one or two exceptions) the fundamental physical constant which is known to the lowest level of precision, with a relative uncertainty ur of 5.0×10−8.
Read more about this topic: Planck Constant
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