Skip to Content
Make: Technology on Your Time Volume 15
book

Make: Technology on Your Time Volume 15

by Mark Frauenfelder
August 2008
Intermediate to advanced content levelIntermediate to advanced
192 pages
8h 8m
English
Make: Community
Content preview from Make: Technology on Your Time Volume 15

1+2+3 Two-Cent Wobbler

By George W. Hart

Mathematically rich thrills from a cheap toy.

I recently returned home from Japan with some leftover coins and decided to make them into “wobblers.” Two orthogonally interlocked disks will roll together with an amusing left-right wiggle. If the spacing between the disks is just right, the wobbler’s center of gravity remains at a fixed height so it will wobble down the slightest incline. It is surprisingly addictive to roll these and race them, and you can’t beat them as a cheap gift!

1. Cut slots in any 2 identical ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Best of Make: Volume 2

Best of Make: Volume 2

The Editors of Make:
iPad Music

iPad Music

Mark Jenkins

Publisher Resources

ISBN: 9781680456141Errata Page