Template talk:Did you know nominations/Pictet's experiment

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... that in 1790, ten years before the discovery of infrared heating of the Earth by the sun, Marc-Auguste Pictet demonstrated the apparent reflection of cold by mirrors? [2023-11-21 at 21:43:22, by Z1720]
... that in 1790, ten years before the discovery of infrared heating of the Earth by the Sun, Marc-Auguste Pictet demonstrated the apparent reflection of cold by mirrors? [2023-11-21 at 22:21:49, by Stephen]