Been seeing a lot of videos about them breaking glasses in an instant, but i’m clueless to this sorcery. The same glasses take say a conventional hammers/crowbars/screwdrivers multiple tries to break. There’s no source telling how it works and i’ve personally never seen this thing in real life. Why do these hammers have such a small tip and how does it breaks glasses with ust a mild pressure on the window? I get the seatbelt cutting part, but the hammer part is a bit baffling.
Is “f=ma” the right answer to this concept?
Some unusual designs they’re coming in now (tubes) are beyond my comprehension.
In: 14
Tempered glass is very strong and resistant to impact. The key is though, if it gets even a tiny crack, it catastrophically fails, and the whole thing shatters into tiny peices.
A safety hammer works by having a hard, and very pointy tip. The hardness is key to being able to actually scratch the glass, and the very pointy tip allows to easily crack through, because of physics. The smaller the area of impact is, the greater the force transfered to that point is.
So combine those factors, and you generate a fairly big force in a tiny spot, with a material that is hard enough to chip the glass. The glass then just shatters on its own.
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