In the episode "Errand of Mercy," the Organians are able to make all weapons radiate extreme heat. However, can they do the same to "non-weapon" weapons?
For example, if Capt. Kirk were to get into a fistfight with Kor, will he find his fists burned?
Exactly that happened.
edit: And if it didn't, then I'm misremembering from the Blish adaptation.