INCANDESCENCE

Incandescent, like the word candle, has its origins in the Latin word candere meaning “to glow or shine.” Combined with the suffix in meaning “within,” its meaning can be easily pulled from the combination of its root words: “to glow or shine from within.” – Vocabulary.com Dictonary

Traditionally, the incandescence of incandescent electric light is associated with a warm red-yellow glow as apposed to the cool green-blue of more modern light emitting devices.