Before revision: 17th century Early thermometers alt=Portrait of Santorio Santorio| 219x219px |Santorio Santorio The European scientists Cornelius Drebbel, Robert Fludd, Galileo Galilei and Santorio Santorio in the 16th and 17th centuries were able to gauge the relative "coldness" or "hotness" of air, using a rudimentary air thermometer (or thermoscope).
After revision: 17th century Early thermometers alt=Portrait of Santorio Santorio| 161x161px |Santorio Santorio The European scientists Cornelius Drebbel, Robert Fludd, Galileo Galilei and Santorio Santorio in the 16th and 17th centuries were able to gauge the relative "coldness" or "hotness" of air, using a rudimentary air thermometer (or thermoscope).