Time from Disorder: How Atoms Revealed an Internal Clock ⚡ экспресс
Original: "Testing the problem of time with cold atoms"
Physicists have shown: time is measured not by ticking, but by the growth of disorder inside a system.
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What if time is not the ticking of invisible clocks, but a sensation born from change? Physicists took a cloud of atoms, split it in two with a laser, and let one half live by its own internal rhythm. It turned out that without any external stopwatch, events clearly order themselves—just by tracking rising disorder. This "entropic" approach explains how time flows in black holes and right after the Big Bang, where ordinary clocks have nothing to lean on.
🎯 Disorder in a closed system never decreases—that's what gives time its direction from past to future.