Date: Fri, 19 Nov 2010 09:13:23

Author: Bill Alexander

Subject: Re: Atomic Trampoline - Whatever happened to these?


I have a piece of 1/4 inch steel plate that I drop a 1 inch steel ball bearing on, after bouncing it on a different surface. On the steel, after dropping 1 foot, it bounces maybe 1/16th of an inch or less.

Lots of little dimples on the plate now.

Bill A.

----- Original Message -----
From: "Paul Nord"
Subject: [tap-l] Atomic Trampoline - Whatever happened to these?

I can't find any listings online. The one referenced below says that it's out of stock.

Does anyone know where these might still be available?


On Sep 27, 2005, at 3:35 PM, A Gavrin wrote:

> (sorry I lost the original message in this thread)
> Another possibility is the "Atomic Trampoline"
> This is a kit that consists of two lucite tubes each with a stainless steel plug in the base. One plug has a thin amorphous metal disk spot welded to it. You drop a ball bearing into each tube side by side. The difference is quite striking. It works for the same reason as "regular" glass does. The amorphous metal has no crystal structure, so it cannot absorb energy easily by creating and moving dislocations.
> For the kit, go to and scroll about two thirds of the way down (or search for the word "amorphous.")
> You can see a movie of this at
> (where they are pushing the technology for things like golf clubs).
> --
> Andrew D. Gavrin
> Associate Professor of Physics Associate Dean, IUPUI School of Science
> LD 222, 402 N. Blackford St.
> Indianapolis, IN 46202-3273
> 317-274-6909 (Phys)
> 317-274-0636 (Sci)

Bill Alexander
Humboldt State University
Arcata, CA 95521

Any job worth doing is worth buying a new tool.

From Fri Nov 19 12:33:58 2010
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