In common interpretations of quantum mechanics, it can only be said that objects exist once I observe them - it is not legitimate to ask where an object was before I observed it.
Does this point of view extend to measurements of physical constants? Do physical constants exist or have definite values before we measure them? Do they have definite values when we aren't measuring them? For example, which of the following statements is correct?
- A Measurement determines the speed of light
- The speed of light determines the outcome of a measurement
- Nobody knows, but somebody will know
- Nobody will ever know
I think this is a legitimate question, since how could I know that the speed of light is constant, if I am not measuring permanently. Might it only be constant/meaningful to speak of the speed of light the moments I look at it?