optical telegraph

Questions

What does optical telegraph mean?

any telegraph that uses visual signals to convey a message, including the use of smoke signals, beacons or reflected light, which have existed since ancient times.

How to pronounce optical telegraph

1. Open the pronunciation page — Open the Speakur entry for “optical telegraph”.
2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
3. Play the audio — Click Play to hear reference audio for “optical telegraph”.
4. Repeat and practice — Say “optical telegraph” aloud, matching stress and vowels until it feels natural.