Time and Relativity - Bourbaphy

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S eminaire Poincar e XVLe Temps(2010) 1 15S eminaire Poincar eTime and RelativityThibaultDamourInstitut des Hautes Etudes ScientifiquesLe Bois-Marie35, route de Chartres91440 Bures-sur-Yvette, France1 IntroductionTime has many facets, related to most fields of human endeavour, and to manyseparate fields of science : Metaphysics : Heraclitus Panta rei ( everything flows ) ; Zeno s arrow,Leibniz s relational time , Kant s ideality of time ,... Spirituality : samsara, maya, sunyata, brahmanda (cosmic egg), orphism, berei-shit (book of genesis), eternal return through ekpyrosis, death and resurrection,eternity,... Psychology : awareness, flow of consciousness,... Literature : from Virgil s fugit irreparabile tempus to Proust sIn Searchof Lost time . Music : rhythm, tempo, frequency,... Historical studies : from Herodotus to Fernand Braudel. Technology : from Sun dials to LED watches.

Vol. XV Le Temps, 2010 Time and Relativity 3 has been commonly held by human beings (nor do I know whether other animals share it). Among the ancient Greeks, it seems that, with the important exception

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