SEMAPHORE (Gr. oiva, sign, and (Popa, carrying, from &

See also:

• EA(nar...), (p.s„,.,.)
• EA(psr...), (p, „...)• (pqr...)

ea)  , to bear), the name of an apparatus or mechanical device by which information or messages can be signalled to a distance . It consists of movable arms or blades of wood, worked by levers and affixed to a high post or pole . The most familiar semaphore is that used in railway signalling on the block system, where the blade if horizontal signifies danger, if dropped safety . Used with a code, the semaphore is still used in the navy for signalling from ship to ship . Until the invention of the electric telegraph, the semaphore was used for transmitting messages over long distances .