Universal things on Instagram: "A thermal camera works by seeing heat instead of light. Everything around us, whether it is a person, a cup, or water, gives off heat all the time, even if we cannot feel it. This heat travels as invisible energy called infrared radiation. A thermal camera has special sensors that can detect this invisible heat energy and measure how warm or cool something is. The camera then converts these measurements into an image, where different temperatures are shown as diff

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