How long did it take to transmit a message from Paris to Lille using the semaphore system?
20 minutes
1 hour
3 hours
6 hours
Answer
Using the semaphore system, it took approximately 3 hours to transmit a message from Paris to Lille, a distance of about 220 km. This was a significant improvement over traditional methods of communication at the time.
Claude Chappe Brain Buster: 21 Questions to Explode Your Mind