umm....you clipped the first part of the sentence, the part that says the graphene ribbon reached a temperature of 2500°C or 4532°F which caused the warm glow.
Rememeber the movie “Farenheit 451” that being the flash point of paper.
You’re going to need a bigger air condition, probably made of tungsten.
;>)
Yes, I realize how hot it gets.
Maybe they could corner the Easy Bake Oven market? LOL!