Now we come to what I consider the “fun” part of this article: Granville Woods’ inventions and patents. There are some who say that the number of patents Woods obtained is at least 60, may be even ...

In the 1880s Heinrich Hertz discovered that a spark jumping between two pieces of metal emits a flash of light—rapidly oscillating electromagnetic waves—which can be picked up by an antenna. To honor ...

Appendices (p. [655]-685): I. Wireless telegraphy act of 1904. II. Bibliography of electric wave telegraphy. III. British patent specifications for improvements in electric wave telegraphy between ...

METHODS of transmitting pictures by telegraphy have been known for the last ten years. In a suitably constructed photoelectric cell, the electric current through it can be made proportional to the ...

WHY Mr. Beechy should wish to depart from ordinary usage and call his book electro-telegraphy rather than electric telegraphy, we have no idea. The assumption of an eccentric title for a scientific ...

On August 16 1858, the first telegraphic message crossed the Atlantic ocean. Travelling along a recently laid cable, the message from Queen Victoria to President Buchanan took just 16 hours. Prior to ...