Abstract
DIRAC1,2 has proposed that the large dimensionless numbers that are constructable from the fundamental constants of physics and astronomy are related to each other, and are simple functions of our present epoch in the Universe. Thus he suggests that, as measured by atomic standards, the gravitational constant, G, varies with the time as t−1 and the number of nucleons in the Universe increases as t2. In more recent work3,4, he has pursued the consequences of assuming different modes of creation of new matter. We have found that Dirac's theory of multiplicative creation, but not his theory of additive creation, is not in contradiction with known facts about the Sun.
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