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Note publique d'information : Essential Astrophysics is a book to learn or teach from, as well as a fundamental
reference volume for anyone interested in astronomy and astrophysics. It presents
astrophysics from basic principles without requiring any previous study of astronomy
or astrophysics. It serves as a comprehensive introductory text, which takes the student
through the field of astrophysics in lecture-sized chapters of basic physical principles
applied to the cosmos. This one-semester overview will be enjoyed by undergraduate
students with an interest in the physical sciences, such as astronomy, chemistry,
engineering or physics, as well as by any curious student interested in learning about
our celestial science. The mathematics required for understanding the text is on the
level of simple algebra, for that is all that is needed to describe the fundamental
principles. The text is of sufficient breadth and depth to prepare the interested
student for more advanced specialized courses in the future. Astronomical examples
are provided throughout the text, to reinforce the basic concepts and physics, and
to demonstrate the use of the relevant formulae. In this way, the student learns to
apply the fundamental equations and principles to cosmic objects and situations. All
of the examples are solved with the rough accuracy needed to portray the basic result.
Astronomical and physical constants and units as well as the most fundamental equations
can be found in the appendix. Essential Astrophysics goes beyond the typical textbook
by including references to the seminal papers in the field, with further reference
to recent applications, results, or specialized literature. There are fifty set-aside
focus elements that enhance and augment the discussion with fascinating details. They
include the intriguing historical development of particular topics and provide further
astrophysics equations or equations for other topics. Kenneth Lang is a world-renowned
author on astrophysics. His books for professional astrophysicists as well as for
students and the interested layman are highly acclaimed.
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