how does the laser thermometer measure how hot/cold something is, by just shining on it with a few rays of laserlight?
In: Technology
Heat and light are just two forms av energy, and by measuring the speed and wavelength of the returning light you get the temperature.
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The light bounces back at different wavelengths depending on the temperature of the air and the object that was hit. This is also the reason why the laser might reach a few meters but not being able to calculate the correct temperature over a distance further than a few centimetres.
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