4 ms·
I hope so too, but I think the kilogram is just a base unit, not a fundamental constant? :-)
by mehrdadn 7y ago
I hope so too, but I think the kilogram is just a base unit, not a fundamental constant? :-)
- VectorLock 7y agoNow it is.
- gmueckl 7y agoIt is defined in terms of the Planck constant. Now if that constant is not actually constant over time or space, the definition would be in trouble. For example, it is unclear whether the Hubble constant is, in fact, constant over time. Different measurements give different values for different time periods in the past and these have yet to be reconciled.