Comment on Half as Hot
not_woody_shaw@lemmy.world 3 weeks agoIt’s a room made from platinum-iridium, and kept in a triple-locked vault at the International Bureau of Weights and Measures in France.
Comment on Half as Hot
not_woody_shaw@lemmy.world 3 weeks agoIt’s a room made from platinum-iridium, and kept in a triple-locked vault at the International Bureau of Weights and Measures in France.
grozzle@lemm.ee 3 weeks ago
unfortunately, opening the door changes the temperature, so in practice instruments are calibrated from copies of the room built at other metrology institutions around the world.