![Applied Sciences | Free Full-Text | How Infrared Radiation Was Discovered—Range of This Discovery and Detailed, Unknown Information | HTML Applied Sciences | Free Full-Text | How Infrared Radiation Was Discovered—Range of This Discovery and Detailed, Unknown Information | HTML](https://www.mdpi.com/applsci/applsci-11-09824/article_deploy/html/images/applsci-11-09824-g002.png)
Applied Sciences | Free Full-Text | How Infrared Radiation Was Discovered—Range of This Discovery and Detailed, Unknown Information | HTML
![In1800, Herschel was testing filters for the sun so he could observe sun spots. When using a red filter he found there was a lot of heat produced. He discovered infrared radiation In1800, Herschel was testing filters for the sun so he could observe sun spots. When using a red filter he found there was a lot of heat produced. He discovered infrared radiation](https://c8.alamy.com/comp/G14X76/in1800-herschel-was-testing-filters-for-the-sun-so-he-could-observe-G14X76.jpg)
In1800, Herschel was testing filters for the sun so he could observe sun spots. When using a red filter he found there was a lot of heat produced. He discovered infrared radiation
![What is Infrared Light? William Herschel's Amazing Discovery of Infrared Radiation and Waves - 02 on Make a GIF What is Infrared Light? William Herschel's Amazing Discovery of Infrared Radiation and Waves - 02 on Make a GIF](https://i.makeagif.com/media/11-16-2017/97LV1f.gif)
What is Infrared Light? William Herschel's Amazing Discovery of Infrared Radiation and Waves - 02 on Make a GIF
![Around 1800 William Herschel found that this type of radiation he called radiant heat is closely related to visible light Jeopardy - JeopardyArchive.com Around 1800 William Herschel found that this type of radiation he called radiant heat is closely related to visible light Jeopardy - JeopardyArchive.com](https://jeopardyarchive.com/answ/around-1800-william-herschel-found-that-this-type-of-radiation-he-called-radiant-heat-is-closely-related-to-visible-light.jpg)