I come to this conclusion because a mazer amplifies radiation; a transistor amplifies electricity.
Microwave Amplification by the Ztimulated Emission of Radiation ?
or did you see Ender's Game a bit too recently. (good movie, better book)
welcome to PF
it's actually MASER
Microwave Amplification by the Stimulated Emission of Radiation
not a good conclusion both masers and lasers are used to produce coherent beams of E/M radiation ( photons)
A laser normally refers to ones in the general optical range IR - visible - UV
Where a maser is generally operating at much lower frequencies in the microwave bands ( RF)
personally have never heard of a transistor for radiation not sure where you got that from
A transistor doesn't actually amplify electricity, it uses a small current source to control a larger current source
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