Who wins in a fight between an AK-47 and a piece of glass? It might seem like an easy question, but glass can be stronger than you might think.
Perhaps you've heard of the Prince Rupert's Drop, a type of glass crystal with an almost impossible amount of strength. The bulb of a PRD can withstand tremendous amounts of force, although the tail is vulnerable—and if it breaks the whole crystal shatters.
A few months ago, Destin Sandlin from Smarter Every Day decided to test just how strong a PRD really is by shooting it with a bullet. Although the crystal did shatter, it was because the impact shockwave hit the tail, not beacuse of any weakness of the bulb. This means that the bulb of a PRD was strong enough to withstand the impact of a handgun bullet.
That's pretty impressive, but Sandlin wanted to find out just what it would take to shatter that bulb. So he with a .38 special firing full metal jackets. That was surprisingly not enough to shatter the bulb of a PRD. So Sandlin went for the big guns—literally:
So who does win in a fight between an Ak-47 and a piece of glass? It all depends on how they collide. Sandlin actually does two takes because on the first, the bullet only makes a glancing blow on the bulb of the PRD. This impact is not enough to shatter the bulb, although it is enough to break the tail. A second head-on—or bulb-on—shot does shatter the bulb, proving that not even the mighty Prince Rupert's Drop is completely indestructible.