(1877 - 1946) British astrophysicist. His work on radiation, stellar formation, the solar system and theory of gases constitutes a major contribution to the advancement of scientific knowledge. He combined pure research, however, with speculation on questions of an ultimatenature, once asserting that the universe consisted of pure thought and gave evidence of having been designed by a mathematical thinker. —5th ACC Vol 2 Glossary (Final Approval 7/12/89), Collier's Encyclopedia