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University of Pennsylvania - WINTER (Jan, Feb) | ||
Section 601 | ||
 | Frame of the Universe: A History of Physical Cosmology (Reprint Edition) by Professor Frank Durham, Robert D. Purrington Paperback, 284 Pages, Published 1983 ISBN-10: 0-231-05393-2 / 0231053932 ISBN-13: 978-0-231-05393-8 / 9780231053938 Frank Durham, Robert D. Purrington. CHAPTER 12. Widening. Horizons: Einstein . Maturity and Crisis The richness and variety of the discoveries in physics in the two centuries after the publication of the Principia in 1687 and the prolific successes of observational astronomy during the same period | |