| electromagnet | (n) a temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet |
| electromagnetic | (adj) pertaining to or exhibiting magnetism produced by electric charge in motion, Example: electromagnetic energy |
| electromagnetic delay line | (n) a delay line based on the time of propagation of electromagnetic waves |
| electromagnetic interaction | (n) an interaction between charged elementary particles that is intermediate in strength between the strong and weak interactions; mediated by photons |
| electromagnetic intrusion | (n) the deliberate insertion of electromagnetic energy into transmission paths with the objective of confusing or deceiving operators |
| electromagnetic radiation | (n) radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge, Syn. electromagnetic wave, nonparticulate radiation |
| electromagnetic spectrum | (n) the entire frequency range of electromagnetic waves |
| electromagnetic unit | (n) any of various systems of units for measuring electricity and magnetism, Syn. emu |
| electromagnetism | (n) magnetism produced by an electric current, Example: electromagnetism was discovered when it was observed that a copper wire carrying an electric current can magnetize pieces of iron or steel near it |
| electromagnetism | (n) the branch of physics concerned with electromagnetic phenomena, Syn. electromagnetics |