The microwave plasma mystery

Sometime last year, I got really interested in microwave plasma, which can be made from a lot of things like lit matches, aluminum foil or just some grapes. However, when I went searching for more info about it, I really couldn't find much of anything. There was also no explanation as to why it was yellow every time, regardless of what it was made from. So, I decided to investigate this a little bit and try to get to the bottom of it. Grape plasma paper: https://www.pnas.org/content/116/10/4... Video references: • Applied Science (Ben):    / bkraz333   • Applied science video on making potassium glass:    • How to chemically strengthen glass (eg Gor...   • RUPhys2012:    • Microwave Aluminum Foil   • Steve Mould:    • How to film the inside of a microwave (2 w...   • Stupideaproductions:    • ☢ Microwave Plasma : AWESOME experiment   • Veritasium (new grape video):    • Microwaving Grapes Makes Plasma   • Veritasium (old grape video):    • Make Plasma With Grapes In The Microwave!   • Walter Mitty:    • Match in Microwave Creates Plasma   ■ Pre-order the NileRed BZ Reaction Kit - https://inqfactory.com/nilered ------------------------------------------------------------------------------- Merch - https://nilered.tv/store ------------------------------------------------------------------------------- Join the community: Patreon -   / nilered   Discord -   / discord   NileRed Newsletter - https://nile.red/home#newsletter You can also find me here: Facebook -   / nilered2   Instagram -   / nile.red   Twitter -   / nilered2   Nile talks about lab safety:    • Chemistry is dangerous.   Music in credits (Walker by SORRYSINES):   / walker