Practical Coilgun Design

"Backyard Ballistics" by William Gurstelle

William Gurstelle has a wonderful book for those of us who love to tinker with cannons and catapults. Chapter Eleven deals with velocity measuement, and Mr. Gurstelle has generously granted me permission to reproduce this chapter on my web site.

"Backyard Ballistics" by William Gurstelle

"Backyard Ballistics" is available from Amazon bookseller on-line and many other booksellers.

Mr. Gurstelle's web site ( has useful information, his blog, and several related books.

Click on these images for a full-size view of the first few pages:
Front cover   Copyright and Library of Congress number   Table of contents page   Back cover page

Chapter 12: The Ballistic Pendulum

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