000			02016cam a22002777i 4500
001			20089229
003			OSt
005			20240918124942.0
008			171024s2018 enka b 001 0 eng d
010			_a 2017958745
020			_a9780198816478 _q(paperback)
040			_aICTS-TIFR
050	0	0	_aQB461 _b.S24
100	1		_aSaha, P. _q(Prasenjit), _eauthor.
245	1	4	_aThe astronomers' magic envelope : _ban introduction to astrophysics emphasizing general principles and orders of magnitude
250			_aFirst edition.
264		1	_aOxford ; _bOxford University Press, _c[c2018]
300			_a121 p.
504			_aIncludes bibliographical references and index.
505	0		_a1: Orbits 2: Celestial Mechanics 3: Schwarzschild's spacetime 4: Interlude: Quantum ideal gases 5: Gravity versus pressure 6: Nuclear fusion in stars 7: The main sequence of stars 8: The expanding Universe 9: The cosmic microwave background.
520	0		_aWorking physicists, and especially astrophysicists, value a good 'back-of-the-envelope' calculation, meaning a short, elegant computation or argument that starts from general principles and leads to an interesting result. This book guides students on how to understand astrophysics using general principles and concise calculations, endeavoring to be elegant where possible and using short computer programs where necessary. The material proceeds in approximate historical order. The book begins with the Enlightenment-era insight that the orbits of the planets is easy, but the orbit of the Moon is a real headache, and continues to deterministic chaos. This is followed by a chapter on spacetime and black holes. Four chapters reveal how microphysics, especially quantum mechanics, allow us to understand how stars work. The last two chapters are about cosmology, bringing us to 21st-century developments on the microwave background and gravitational waves.
650		0	_aAstrophysics
650		7	_aAstronomy
700	1		_aTaylor, Paul A.
942			_2lcc _cBK
999			_c35091 _d35091