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Newton's Philosophiae Naturalis Principia Mathematica provides a coherent and deductive presentation of his discovery of the universal law of gravitation. It is very much more than a demonstration that 'to us it is enough that gravity really does exist and act according to the laws which wehave explained and abundantly serves to account for all the motions of the celestial bodies and the sea'. It is important to us as a model of all mathematical physics.Representing a decade's work from a distinguished physicist, this is the first comprehensive analysis of Newton's Principia without recourse to secondary sources. Professor Chandrasekhar analyses some 150 propositions which form a direct chai...
This book is a continuation of The Heads of Religious Houses: England and Wales 940–1216, edited by Knowles, Brooke and London (1972), continuing the lists from 1216 to 1377, arranged by religious order. An introduction examines critically the sources on which they are based.
This is the first of two volumes, now covering the heads of religious houses in England and Wales from the tenth-century reform to the death of Edward III, 940–1377. This first volume, by the great master of monastic history, Dom David Knowles, aided by Christopher Brooke and Vera London, was published first in 1972 and was quickly recognised as a major work of reference, noted for its mastery of accurate detail. It has now been brought up to date with substantial addenda and corrigenda by Christopher Brooke. The 1972 volume covers the period 940–1216, and comprises fully documented, critical lists of monastic superiors, with succinct biographical details. It is an essential foundation for all prosopographical study of the religious history of the period; and the precise chronology that it underpins is invaluable for dating innumerable undated documents. As such, the book is a fundamental tool of medieval research.