Want exact network time on a wall clock? Apps like Clock Wave (iOS) grab the network time from the Internet and play a 60kHz audio tone. The phone's speaker coil creates a pulsing magnetic field that mimics the official (WWVB) radio signal, forcing the clock to sync.
Joseph Lorenzo Hall, PhD
npub179…yckty
2026-03-13 16:37:52 UTC
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2026-03-13 16:37:52 UTCEvent JSON
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