Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message.
Related
Car
invented by Nicolas-joseph cugnot
A car (or automobile) is a wheeled motor vehicle used for transportation. Most…
screw-cutting lathe
invented by Jesse Ramsden
A screw-cutting lathe is a machine (specifically, a lathe) capable of cutting…
Octant
invented by John hadley Thomas godfrey
The octant, also called reflecting quadrant, is a measuring instrument used…
Weighing scale
invented by Richard Salter
A scale or balance is a device to measure weight or mass. These are also known…
Suggest an invention you think it should be here
About
Inventions that changed the world
Leave a Reply