The Day by Day History of the United States
Custom Search
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec
Home >> US History >> This Day US History

Picnic Menu Ideas & Planning
Picnic Menu Ideas & Planning

1000s of great recipes and picnic menu ideas

History of the U.S.
Discover Amazing Americans
Prehistory
Pre-Columbian Era

Colonial America (1492-1763)

Revolutionary Period (1764-1789)

The New Nation (1790-1828)

Western Expansion & Reform (1829-1859)

Civil War (1860-1865)

Reconstruction (1866-1877)

Gilded Age (1878-1889)

Progressive Era (1890-1913)

Great War & Jazz Age (1914-1928)

Depression & WWII (1929-1945)

Modern Era (1946 - present)

State Histories

 

December 31Trivia powered by Prof. Walter

First Public Demonstration of Edison's Light Bulb
In 1879

Can you imagine what life was like before you could simply flip a switch and turn on a light?  How would not having electric light affect the way you live your life? In the 1870s, many inventors were working on creating lighting devices, but until Edison became involved, what existed was electric arc lighting.  This kind of lighting system was one in which lights were connected in a series circuit, so if one failed, the whole circuit failed.  Edison boasted that he would create a safe, reliable, and inexpensive electric light that would replace gaslight.

On December 31, 1879, after years of work and thousands of experiments, Edison gave the first public demonstration of the incandescent light bulb at his laboratory in Menlo Park, New Jersey. An incandescent light has a thread-like object, or filament, that gives off light when heated to incandescence (hot enough to emit light) by an electric current.

Edison was able to spend so much time on this invention because, thanks to his reputation as a successful inventor, he had the support of some leading financiers of the day. J.P. Morgan and the Vanderbilts established the Edison Light Company and advanced Edison $30,000 for research and development.

Edison did not work on creating the incandescent electric light alone. He was assisted by Francis Upton, a 26-year-old graduate of Princeton University with a master's degree in science. Upton provided the mathematical and theoretical expertise that Edison lacked. In October 1879, they produced a bulb with a platinum filament. But platinum was too expensive, so instead they found that a carbon filament provided a good light at a cheaper price. Although there were problems with the early incandescent lighting systems for years, Edison's reputation as the world's greatest inventor was firmly established.

More History

 
 



Powered by ... All text is available under the terms of the GNU Free Documentation License.
E-mail | AlansKitchen Privacy Policy | Thank you