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In 1947, Harvard’s Mark II ran on roughly 13,000 electromechanical relays, stored numbers across 100 registers, and read instructions from punched paper tape, turning thousands of clicking metal switches into a Navy calculator vulnerable to dust, loose contacts, and one famously misplaced moth

Jul 27, 2026

In 1971, engineer Ray Tomlinson sent the first networked email between two computers sitting side by side in the same room — he chose the @ symbol to separate user from machine because it was the only punctuation on the keyboard nobody was using

Jul 27, 2026

How did a single computer worm written by a Cornell graduate student in November 1988 crash roughly 6,000 machines and force the internet to invent security?

Jul 27, 2026

When you tilt a smartphone, gravity shifts microscopic silicon fingers inside its accelerometer by only a few nanometres, changing the capacitance between them and producing the electrical imbalance the phone reads as a new direction for down

Jul 27, 2026

A microwave oven works because water molecules have a slight positive and negative end — the magnetron flips an electric field 2.45 billion times a second, and the molecules twist back and forth so fast the friction becomes heat

Jul 27, 2026

The retina of the mantis shrimp carries twelve types of colour receptor to the human eye’s three — and yet experiments suggest it sees colour worse than we do, using the extra channels for speed instead of subtlety

Jul 27, 2026

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