stackyFACTSThe oldest clock in the world is essentially just a stick casting a shadow. But a sundial's flat face and angled gnomon must be specifically aligned with the Earth's rotational axis and your exact local latitude to function. It uses literal planetary geometry to ensure you know it's time for lunch.
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Your fancy bathroom accessory actually depends entirely on an extremely fragile physical strain gauge. Stepping on the glass physically bends a rigid piece of…
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Starlight gets hopelessly blurry when passing through Earth's turbulent atmosphere. To compensate, astronomers fire massive, bright lasers straight up into…
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