Glass Is Neither a Solid nor a Liquid

Glass is an amorphous solid — its molecules are disordered like a liquid but rigid like a solid. The myth that old cathedral windows are thicker at the bottom due to flowing is false; that was just medieval glassmaking technique.

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Water Can Boil and Freeze at the Same Time

At a specific pressure and temperature known as the triple point, water exists simultaneously as a solid, liquid, and gas. This occurs at 0.01 degrees Celsius and 611.73 pascals.

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There Are More Possible Chess Games Than Atoms in the Universe

The Shannon number estimates roughly 10^120 possible chess games, while the observable universe contains approximately 10^80 atoms. Chess complexity dwarfs cosmic scale by a factor of 10^40.

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The World's First Computer Programmer Was a Woman in 1843

Ada Lovelace wrote the first algorithm intended for machine execution, designed for Charles Babbage's Analytical Engine. She also predicted that computers could go beyond pure calculation to create music and art.

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Velcro Was Invented After a Walk in the Woods

Swiss engineer George de Mestral noticed burrs sticking to his dog's fur in 1941. Under a microscope he saw tiny hooks catching on loops of fur, and spent eight years perfecting the synthetic version.