Teaching You things that nobody does on Instagram: "This clip shows a counter-intuitive property of tempered car glass. Certain hard, brittle ceramic materials can concentrate force into an extremely small point, instantly disrupting the internal stresses inside the glass and causing it to shatter all at once. Car windows are designed to break this way for safety, so when their stress balance is disturbed at the right spot, the entire pane releases its stored energy in a split second. It’s not a