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Why Unplugging an Inductor Can Create a Huge Voltage Spike
Technology

Why Unplugging an Inductor Can Create a Huge Voltage Spike

An inductor resists sudden changes in current; when disconnected, its magnetic field collapses and can generate a dangerously high voltage spike.

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How tin can grow tiny metallic whiskers
Technology

How tin can grow tiny metallic whiskers

Pure-tin finishes on electronic components can spontaneously grow microscopic conductive filaments called tin whiskers. If one bridges circuit points, it can…

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Motion capture actors perform scenes on empty stages
Games

Motion capture actors perform scenes on empty stages

In bare warehouses without props or scenery, performers have to imagine what they’re interacting with—sometimes turning a foam block into a roaring dragon.

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Why your backpack feels like an adult security blanket
Transport

Why your backpack feels like an adult security blanket

A backpack keeps daily essentials within reach, so carrying it can feel like carrying a little reserve of control. Keys, water, a charger: the adult security…

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A butt is actually a giant cask of wine
Science

A butt is actually a giant cask of wine

Before it meant a body part, a butt could mean a big barrel. The cask held about 126 gallons of wine or ale, making a buttload a very large quantity with a…

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Colanders immediately drain away boiling pasta fluids
Transport

Colanders immediately drain away boiling pasta fluids

Gravity pulls the boiling water through the colander’s holes; noodles, too large to follow, stay behind. The kitchen’s simplest sorting machine has one rule:…

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Walk-ins claim new souls hijacked their bodies
Myths & mysteries

Walk-ins claim new souls hijacked their bodies

In the “walk-in” belief, an original soul agrees to leave so a higher-vibration soul can take over the body—a supposed explanation for a sudden change in…

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John Locke wrote passionate letters to a married philosopher
History

John Locke wrote passionate letters to a married philosopher

Though he remained a bachelor, Locke spent years sending emotional, dramatic letters to a married intellectual peer.

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Why movie snow crunches like cornstarch
Games

Why movie snow crunches like cornstarch

Sound teams make the crunch by squishing baking cornstarch in leather pouches near a microphone.

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A pop group's harmonies can divide one melody into several jobs
Culture & entertainment

A pop group's harmonies can divide one melody into several jobs

One singer can carry the tune while others provide notes above or below it, creating chords with voices alone. The arrangement makes several performers sound…

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Digital tournament teams possess terrifying mascots
Games

Digital tournament teams possess terrifying mascots

At major events, oversized foam mascots work the crowd and can block spectators’ view of the screen. Players onstage often ignore them.

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Sundials become completely inoperable indoors or at night
Science

Sundials become completely inoperable indoors or at night

A sundial reads the Sun’s position from the shadow cast by its pointer. Clouds can hide that shadow, and after sunset there’s no sunlight to make one at all.…

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Laundry baskets move dirty clothes across hallways
Transport

Laundry baskets move dirty clothes across hallways

A wheeled laundry basket turns a heavy pile of clothes into a rolling load, sparing your arms for the doors and corners ahead. The socks still refuse to sort…

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Centrifugal governors control engine speeds using rotation
Science

Centrifugal governors control engine speeds using rotation

As an engine spins faster, weights on a linked arm swing outward and push a valve toward less power. When the engine slows, the weights drop and the valve…

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The president who swore his oath on a law book
History

The president who swore his oath on a law book

Adams used a book of laws instead of a religious text because he believed the Constitution was what he had sworn to uphold. Traditionalists were offended; a…

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Why heartbreak can send you to the freezer
Psychology

Why heartbreak can send you to the freezer

After a breakup, the freezer can start looking like emotional first aid. Rejection and loneliness create distress, and sweet, rich food can offer a quick…

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Pokémon called a rice ball a jelly doughnut
Games

Pokémon called a rice ball a jelly doughnut

In the English dub, Brock famously offers food recognizable as Japanese onigiri while calling it jelly-filled doughnuts. The spoken localization and the…

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Sushi conveyor belts deliver plates directly to diners
Transport

Sushi conveyor belts deliver plates directly to diners

A motor pulls plates around a loop, bringing each dish past the diners instead of sending a waiter on endless laps. You spot what looks good and lift it…

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