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Why Toast Lands Jelly-Side Down:
Zen and the Art of Physics Demonstrations
Robert Ehrlich

Paperback | 1997 | $25.95 / £17.95 | ISBN: 9780691028873
224 pp. | 6 x 9 | 2 halftones 111 line illus. 2 tables | Shopping Cart

Reviews | Table of Contents

Physics has the reputation of being difficult to understand and remote from everyday life. Robert Ehrlich, however, has spent much of his career disproving these stereotypes. In the long-awaited sequel to Turning the World Inside Out and 175 Other Simple Physics Demonstrations, he provides a new collection of physics demonstrations and experiments that prove that physics can, in fact, be "made simple." Intentionally using "low tech" and inexpensive materials from everyday life, Why Toast Lands Jelly-Side Down makes key principles of physics surprisingly easy to understand.

After laying out the basic principles of what constitutes a successful demonstration, Ehrlich provides more than 100 examples. Some of the more intriguing include: Terminal Velocity of Falling Coffee Filters; Spinning a Penny; Dropping Two Rolls of Toilet Paper; Avalanches in a Sand Pile; When to Add the Cream to Your Coffee; Deep Knee Bends on a Bathroom Scale; Recoil Force on a Bent Straw; Swinging Your Arms While Walking; Estimating the Net Force on a Moving Book; and, of course, Why Toast Lands Jelly-Side Down.

The book begins with a practical introduction on how to design physics demonstrations. The benefits of designing one's own "demos" are numerous, but primary among them is an increased understanding of basic physics. For many people who teach the principles of physics, demonstrations seem dauntingly complex, filled with hard-to-find equipment and too many possibilities for failure. The demonstrations described in this book are exactly the opposite. Ehrlich describes them with characteristic candor: "You can fit many of them in your pocket, bring them to your class without any set-up required, and best of all, you need not fear that your demo will more likely illustrate Murphy's laws rather than Newton's."

For anyone with even the slightest interest in physics, Why Toast Lands Jelly-Side Down is filled with learning opportunities. For everyone who is studying physics or teaching the subject at any level, from amateur scientists to professional teachers, it is an essential resource.

Review:

"An outstanding new book of physics demonstrations."--Washington Post

"If you find the task of illustrating and humanizing the fundamental principles of the physical world daunting, Ehrlich offers a series of [100] easy 'demos' that are virtually foolproof and well described."--Science News

Endorsement:

"A charming and delightful book full of useful advice. Anyone who teaches undergraduate physics can find something of value in it for almost any course."--Mark P. Silverman, Trinity College

Table of Contents

This book has been translated into:

  • Finnish

Other Princeton books authored or coauthored by Robert Ehrlich:

Subject Area:

"Alternate Selection" of the Library of Science Book Club

Paperback: Not for sale in South Asia

Shopping Cart:

  • For hardcover/paperback orders:

    For hardcover/paperback orders in the United States, Canada, Latin America, Asia, and Australia

    Paperback: $25.95 ISBN: 9780691028873

    For hardcover/paperback orders in Europe, Africa, the Middle East, and India

    Paperback: £17.95 ISBN: 9780691028873

    Prices subject to change without notice

    File created: 3/27/2014

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