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Light reflects at the boundary between an optical fiber’s glass core and its surrounding cladding, staying trapped inside as it travels with little dimming.
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Electron microscopes can resolve details at the scale of individual atoms, so even vibrations from a passing truck can blur the image.
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By holding so much water in one place, the dam slightly shifts Earth's mass and increases its moment of inertia, making each day a tiny fraction of a second…
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A thruster sends an electric current through conductive plasma inside a magnetic field; the resulting Lorentz force drives the plasma out the exhaust to…
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A timing crystal’s frequency can drift as it ages, partly because internal stresses build up. The result is a clock that gradually falls out of sync.
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Instead of storing hot water in a bulky tank, some high-end bidets use ceramic heaters to warm water on demand as it flows through.
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Silver conducts electricity better than copper because it has lower electrical resistance. Its cost and tendency to tarnish make it impractical for most bulk…
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