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The lowest frequency is effectively zero and this would be in the extremely low frequency (ELF) band in the sub-radio range of the electromagnetic spectrum.
Radiowaves are the lowest, with microwaves a close second in lowest frequency.
Yes, they are the electromagnetic wave with the lowest frequency.
0 Hz, DC
Radio waves
The energy of EM radiation depends on its frequency, and the lowest frequency corresponds to the lowest energy. Radio waves are at the low end of the energy and frequency spectrum.
Electromagnetic waves
Radio Waves.
No surprise, radio waves known as ELF waves, or "Extreme Low Frequency."
The part that we call "Extremely Low Frequency Radio Waves".
Lowest energy is at lowest frequency, i.e. longest wave length.
Red light.