https://twitter.com/i/status/1301681929381646336



Edison demonstration of light bulb on December 31, 1879,

Latimer [the semi blackman] patent on January 17, 1882 for the "Process of Manufacturing Carbons",

The Edison Electric Light Company hired Latimer in 1884, as a draftsman and an expert witness in patent litigation on electric lights.




But to me the important discoveries about radiation were from Kirchhoff Planck, and Stefan-Boltzmann.
https://en.wikipedia.org/wiki/Kirchhoff%27s_law_of_thermal_radiation
https://en.wikipedia.org/wiki/Planck%27s_law
https://en.wikipedia.org/wiki/Stefan%E2%80%93Boltzmann_law

There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps