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Why it's not possible to synchronize turn signals (but also absolutely is)

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Caption notes

Two indicators flashing together briefly need not share a clock. Examples from different flashers and the allowed range of rates separate momentary phase agreement, similar frequencies and sustained synchronization.

Archived captions (transcription method unspecified) ↗
Original passages · 2
between 60 and 120 flashes per minute.
Why it's not possible to synchronize turn signals (but also absolutely is) · ▶ 20:59–21:04
turn signal flashers just weren’t precision devices
Why it's not possible to synchronize turn signals (but also absolutely is) · ▶ 32:33–32:39

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