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Who invented the first thermometer?
Answered by Discovery Channel
  • Discovery Channel

    Discovery Channel

  1. The thermoscope was the first thermometer to be invented. It was invented in 1593 by Galileo Galilei, an Italian scientist. In this design, a glass bulb with an open-ended narrow tube is filled with air and submerged in colored water. As the temperature of the air in the tube changes, the level of the water in the tube rises and falls.

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