Note 84 — Chapter XXIV · THE POSTULATE OF EQUIVALENCE
Reading edition
We are assuming that the field does not vary with time. When this is not the case, we must specify that our observations must also be conducted over a very short duration of time.
Reading edition
We are assuming that the field does not vary with time. When this is not the case, we must specify that our observations must also be conducted over a very short duration of time.