View Single Post
Old March 10th, 2010, 16:16   #63
Huron's Avatar
Join Date: Aug 2008
Location: Toronto, ON
OLD AND WRONG: Just did the math for that ANSI test, and the steel ball should impart a bit under 1.6 joules on the glasses. I used the mass of a 1 inch wide cube of steel though so the energy would be a bit higher than what it actually is. This was assuming the steel was 7.9g/cm^3 and solid. So the energy wasn't much more than a 0.2g BB traveling at around 416ft/s. My math could be way off though.

If I got it right however, I think looking towards a tougher ANSI projectile resistance standard would be advisable.

EDIT: Little late, but just redid the equation on paper today and found out that Google did a really wonky conversion and gave me way too high of a density. I got the same 0.6 joules reported after this post.
The war between the sexes is over. We won the second women started doing pole dancing for exercise.

Last edited by Huron; March 11th, 2010 at 21:34..
Huron is offline   Reply With Quote