We shattered a wineglass using resonance. We also filmed the radius distortions here:
We also filmed it shattering here:
How do we measure how much the radius of the rim distorts?
2. The attempt at a solution
I got this free software Imagej, one can use it to set scale and measure distances in images. And do many other things. But I still cant figure out how to measure the amount of radius distortion. Anybody got any simpler and/or better ideas?