Optical telegraph

Encyclopedia : O : OP : OPT : Optical telegraph

---

---

 

Optical telegraph refers to a system of telecomunication using visual means of transmission. Types of systems include Semaphore, Aldis lamps, Heliograph, Ships flags and Smoke signals.

 

---

From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.

---

Search Titles

0

1

2

3

4

5

6

7

8

9

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z

?