Astronomy Astrophysics

A Student's Guide to the Mathematics of Astronomy - download pdf or read online

By Daniel Fleisch, Julia Kregenow

ISBN-10: 1107034949

ISBN-13: 9781107034945

The research of astronomy bargains an enormous chance for us to realize a deeper knowing of our planet, the sun process, the Milky approach Galaxy and the recognized Universe. utilizing the plain-language strategy that has confirmed hugely renowned in Fleisch's different Student's courses, this ebook is perfect for non-science majors taking introductory astronomy classes. The authors handle issues that scholars locate so much problematic, on topics starting from stars and lightweight to gravity and black holes. Dozens of absolutely labored examples and over one hundred fifty workouts and homework difficulties aid readers become familiar with the options in every one bankruptcy. An accompanying site incorporates a host of aiding fabrics, together with interactive suggestions for each workout and challenge within the textual content and a sequence of video podcasts within which the authors clarify the real innovations of each component of the e-book.

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4 Scientific notation It is an inescapable consequence of the immense scale of the Universe that astronomy deals with huge numbers. Our Sun has a mass of approximately 2,000,000,000,000,000,000,000,000,000,000 kilograms, there are about 300,000,000,000 stars in our Milky Way galaxy, and there are between 50,000,000,000 and 1,000,000,000,000 galaxies in the observable Universe. 4 Scientific notation 29 billion billion billion kilograms, and three hundred billion stars, but this is still unwieldy.

8 N, which is the gravitational force between the Earth and a 100-kg person standing on the Earth’s surface. To put this into more-familiar terms, you can convert the units of this result from newtons to pounds by using the conversion factor 4 If you don’t know where to find it, use the index. 45 N. 8 = 221 lb. 45 N As always, you should ask yourself whether this answer makes sense. And it does! 2 lb, it makes sense that 100 kg “equals” about 220 lb. 2 lb (which is a force)? Clearly not, which is why we put quotation marks around the word “equals” in the previous sentences.

You’ll also find plenty of examples showing how to use this law – with or without a calculator. Later sections of this chapter deal with Newton’s Laws of Motion as well as Kepler’s Laws. And like every chapter in this book, this one is modular. So, if you’re solid on gravity but would like a review of Newton’s Third Law, you can skip to that section and dive right in. 1 Newton’s Law of Gravity The equation for Newton’s Law of Gravity may look a bit daunting at first but, like most equations, it becomes far less imposing when you take it apart and examine each term.

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A Student's Guide to the Mathematics of Astronomy by Daniel Fleisch, Julia Kregenow

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