Why the humble thermometer changed our understanding of energy
In short: Thermometers may appear basic, but they were essential to discovering one of science's most fundamental principles: the conservation of energy.
While often overlooked as a simple tool, the thermometer played a crucial role in shaping modern physics. By allowing scientists to measure temperature accurately, it provided the empirical foundation needed to grasp the concept of energy conservation.
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- Summary by Intellect · source: The (Arguably) Most Important Instrument in Physics
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