So does Newton's third law also to be modified by the uncertainty equation?
ANSWER: The first thing I would say is that just because nobody ever measured the recoil of the earth when I jump up into the air does not mean that Newton's third law is not true.
Once you observe where it "is", it is no longer in two places.
ANSWER: The internal energy is the sum of kinetic and potential energies.
An atom may have a probability of � of being in one volume and a probability of � of being in a different volume.