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This book is a treatise on time and on background independence in physics. It first considers how time is conceived of in each accepted paradigm of physics: Newtonian, special relativity, quantum mechanics (QM) and general relativity (GR). Substantial differences are moreover uncovered between what is meant by time in QM and in GR. These differences jointly source the Problem of Time: Nine interlinked facets which arise upon attempting concurrent treatment of the QM and GR paradigms, as is required in particular for a background independent theory of quantum gravity. A sizeable proportion...

They're ideal for birders, nature lovers, and weekend walkers.

A comprehensive study of refrigeration from its beginnings in America up to 1950, which shows its relation to our national development, records the main trends in technological progress, describes the use of refrigeration, and gives some indication of its social effects.

Originally published in 1953.

The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting...

Friends meet to have a party. The Radio announces a declaration of war. Molina is the Beautiful doctor and is admired by Cameron the Journalist who cannot bring himself to tell her of his love. Robert has sympathies with the Germans as he trained there as a medical student. He had seen the burning of books and had joined in the fun.
Cameron with his fellow correspondent Geordie covers the war in France and all its dreamlike qualities of a country not able to comprehend it was involved in a war. Cameron sees the Russian fight the German war machine at Rostov. This is the first time...

Friends meet to have a party. The Radio announces a declaration of war. Molina is the Beautiful doctor and is admired by Cameron the Journalist who cannot bring himself to tell her of his love. Robert has sympathies with the Germans as he trained there as a medical student. He had seen the burning of books and had joined in the fun.
Cameron with his fellow correspondent Geordie covers the war in France and all its dreamlike qualities of a country not able to comprehend it was involved in a war. Cameron sees the Russian fight the German war machine at Rostov. This is the first time...

Studies based on the Rankine-Hugoniot relations have classified MHO shock waves as fast, switch-on, intermediate, switch-off, and slow. Any waves found in nature must also: (a) possess steady-state structures and (b) be stable in the presence of small-flow disturbances. In this monograph, Dr. Anderson examines these criteria in relation to plane shocks for which the collision frequency is large compared with cyclotron frequency. It contains a three-dimensional graphic representation of shock end states and presents an exact solution for the shock adiabatic curve in a convenient form.An MIT...

What is it in peyote that causes such unusual effects? Can modern medical science learn anything from Native Americans' use of peyote in curing a wide variety of...