Tears of glass have the characteristic of being very resistant to shocks, but they spray as soon as their point is broken. Destiny Sandlin of the YouTube Channel Smater Every Day wanted to see how tough the glass tear was by pulling it with a rifle bullet. The slow-motion scene at 150,000 fps allows us to see that the glass tear does not break on contact with the ball. It is the vibration of the tail caused by the impact of the bullet that causes its destruction. One can also see the ball of lead spray into several fragments. The glass tear is produced by immersing molten glass in cold water.