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may 1, 1800 - Astronomer William Herschel, discovered that there must be invisisble light, past we can visibly see as humans. (called Infrared).
Added to timeline:
History of electromagnetism (maxwell findings)
By
Rahul Das
3 Mar 2020
0
0
204
Date:
may 1, 1800
Now
~ 226 years ago
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