Cosmological Astrophysics - It's birthday of #Johann_Wilhelm_Ritter, the man who discovered the #Ultraviolet_Light In 1801, after hearing about the discovery of heat rays (#infrared radiation) by #William_Herschel (in 1800), Ritter looked for
Discovery points to origin of mysterious ultraviolet radiation
Discovery points to origin of mysterious ultraviolet radiation
How were Infrared and Ultraviolet Rays Discovered? - Different Truths
How were Infrared and Ultraviolet Rays Discovered? - Different Truths
Ultraviolet - Wikipedia
Ultraviolet - Wikipedia
Cheaper LEDs can disinfect against COVID-19, Israeli scientists find | The Times of Israel
The platypuses were glowing': the secret light of Australia's marsupials | Animal behaviour | The Guardian