Why an LED Changes Color in Liquid Nitrogen 🤯 | Cryogenic Science Explained
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Why an LED Changes Color in Liquid Nitrogen 🤯 | Cryogenic Science Explained
What happens when an orange LED is cooled with liquid nitrogen? In this fascinating science experiment, an ordinary LED is lowered into liquid nitrogen at −196°C, and its color instantly shifts from orange toward green. Nothing inside the diode changes — the effect comes purely from semiconductor physics. LEDs produce light when electrons ...
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