Who invented the lamp?
The first artificial lamp came from fire. Then some 20, 000 years ago, people realized that they could get light by burning oil. Lamps with vegetable fibres as wicks, were first made in 1000BC. Candles appeared about 2000 years ago. In 1859, drilling for petroleum oil began, and the kerosene lamp was first introduced in 1853 in Germany. Coal gas was first used as lighting fuel as early as 1784. A German inventor Freidrich Winzer was the first person to patent coal gas lighting in 1804.
Peter Cooper Hewitt of United States of America patented the mercury vapour lamp in 1901. Georges Claude from France invented the neon lamp in 1911. Irving Langmuir of United States of America invented tungsten filament in 1915. Hans Spaner, Edmund Germer ad Friedrich Meyer patented a fluorescent lamp in 1927.
Thursday, March 6, 2008
Who invented the lamp?
Saturday, February 23, 2008
Did Thomas Edison really invent the light bulb?
Did Thomas Edison really invent the light bulb?
Edison didn’t ‘invent’ the light bulb, but rather, he improved up a 50-year old idea. Henry Woodward of Toronto, along with Mathew Evans, patented a light bulb in 1875. Unfortunately, the two entrepreneurs could not raise the finance to commercialize their invention. The enterprising American, Thomas Edison, who had been working on the same idea, bought the rights to their patent. Edison had the backing of syndicate of industrial interest with $50, 000 to invest. Using a lower –current, a small carbonized filament, and an improved vacuum inside the globe, Edison successfully demonstrated the light bulb in 1879, and made history. Sir Humphrey Davy of England invented the first electric carbon arc lamp in 1801. A.E. Becquerel of France theorized about the fluorescent lamp in 1857. Sir Joseph Swann of England and Thomas Edison both invented the first electric incandescent lamps around the 1870s.