How to break glass with a fragment of a spark plug

Odds are you’ve probably heard a rumor about being able to break a sheet of tempered safety glass using nothing more than a fragment of porcelain from a spark plug.

In this video, that theory is put to the test to see if it can really be carried out through the use of some old car windows and shards of the white material.

Watch as a tiny little piece of porcelain is tossed at a window and at a moment’s notice, the glass explodes. It’s quite an interesting phenomenon to dive into, that’s for sure!

Check out the video below that shows you how it all works and how you can use this little tidbit of information to your benefit to be a little safer out on the roads.