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E-book
Author Saha, P. (Prasenjit), author.

Title The astronomers' magic envelope : an introduction to astrophysics emphasizing general principles and orders of magnitude / Prasenjit Saha, Paul A. Taylor
Edition First edition
Published Oxford, United Kingdom : Oxford University Press, 2018
©2018

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Description 1 online resource : illustrations
Contents Orbits -- Celestial mechanics -- Schwarzschild's spacetime -- Interlude: quantum ideal gases -- Gravity versus pressure -- Nuclear fusion in stars -- The main sequence of stars -- The expanding universe -- The cosmic microwave background -- Appendix A. Rotations in three dimensions -- Appendix B. Hamiltonians -- Appendix C. Moving from Newtonian to relativistic frameworks -- Appendix D. Working with Planckian units
Summary Working 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 - endeavouring 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
Bibliography Includes bibliographical references and index
Notes Print version record
Subject Astrophysics.
astrophysics.
SCIENCE -- Astronomy.
Astrophysics
Form Electronic book
Author Taylor, Paul A. (Lecturer at the African Institute for Mathematical Sciences), author.
ISBN 9780192548450
019254845X
9780191858246
0191858242