[–] jojobas 5y ago ↗ Pick up a magnet and slowly wag it around. There, you've emitted some low frequency photons.As DC is essentially 0-frequency AC, there's no lower bound to the electromagnetic spectrum.
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[ 3.3 ms ] story [ 13.8 ms ] threadAs DC is essentially 0-frequency AC, there's no lower bound to the electromagnetic spectrum.