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InfraRed Light - William Herschel Experiment - YouTube
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In 1800 astronomer William Herschel, out of curiosity, used a prism and placed a thermometer on each color of the spectrum to see if there was a difference. He had an extra
The Discovery of Infrared | Happy Birthday Infrared - YouTube
Sir Frederick William Herschel Discovery of Infrared Light
Discovery of the electrmagnetic spectrum by Frederick William Herschel - YouTube
Applied Sciences | Free Full-Text | How Infrared Radiation Was Discovered—Range of This Discovery and Detailed, Unknown Information
Somewhere Over the Rainbow: The Discovery of Infrared Light – Planet Pailly