April 1, 2025, marks 50 years since Canada started measuring temperature in degrees Celsius. To celebrate, let’s take a trip ...

Indeed, “any scale, including Fahrenheit or Celsius or even Réaumur, can be linked to the metric system with equal ease,” wrote Eric Pinder, author of Tying Down the Wind: Adventures in the ...

Building a thermometer is a matter of precise technology—putting just the right amount of mercury into a specially designed glass tube, for instance—but determining which numbers to use on the ...