Word | Noun | Adjective | Verb | Adverb |
---|---|---|---|---|
natural action | Yes | No | No | No |
pair production | Yes | No | No | No |
natural action (noun) | pair production (noun) |
---|---|
a process existing in or produced by nature (rather than by the intent of human beings) | the transformation of a gamma-ray photon into an electron and a positron when the photon passes close to an atomic nucleus |