A closer look

If you drip molten glass into cold water, it forms a tadpole shape that defies logic. The outside cools and shrinks instantly, while the inside remains hot. When the inside finally cools, it pulls aggressively on the already solid exterior, creating immense compressive tension. You can literally hit the head of this drop with a hammer and it will not break. But if you gently snap its fragile tail, the entire tension matrix instantly detonates into dust.