📖 what
What is a semaphore signal?
HistoryCommunication
Quick Answer
A semaphore signal is a visual communication system that uses positions of flags or arms to represent letters and transmit messages at a distance.
The Full Story
Semaphore systems were widely used in the 18th and 19th centuries, especially for military and naval communication before radio became common. In flag semaphore, a person holds two flags at different angles to spell letters and numbers. Similar tower-based semaphore networks, such as those developed in France in the late 1700s, allowed fast long-distance messaging. Though largely replaced by modern communication, semaphore remains an important part of signaling history.
Key Facts
1.Widely used in the 18th and 19th centuries
2.Uses flag positions to represent letters
3.Preceded radio communication
YouTube Angle
Suggested video title for this topic:
"The flag code that sent messages before radio"