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Zoom Inventors and Inventions
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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
1300's and Earlier 1400's 1500's 1600's 1700's 1801-1850 1851-1900 1901-1950 1951-2000
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THE INCANDESCENT LIGHT BULB

Light BulblightbulbThe first incandescent electric light was made in 1800 by Humphry Davy, an English scientist. He experimented with electricity and invented an electric battery. When he connected wires to his battery and a piece of carbon, the carbon glowed, producing light. This is called an electric arc.

Much later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. In 1878, he demonstrated his new electric lamps in Newcastle, England.

The inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours.

Lewis Howard Latimer (1848-1928) improved the light bulb by inventing a carbon filament (patented in 1881); Latimer was a member of Edison's research team, which was called "Edison's Pioneers." In 1882, Latimer developed and patented a method of manufacturing his carbon filaments.

In 1903, Willis R. Whitney invented a treatment for the filament so that it wouldn't darken the inside of the bulb as it glowed. In 1910, William David Coolidge (1873-1975) invented a tungsten filament which lasted even longer than the older filaments. The incandescent bulb revolutionized the world.

Label the parts of a modern light bulb.
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Zoom Inventors and Inventions
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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
1300's and Earlier 1400's 1500's 1600's 1700's 1801-1850 1851-1900 1901-1950 1951-2000
Clothing Communication Food Fun Medicine Science/Industry Transportation Undersea
African-Americans Women British Isles China France Germany Greece Italy Scandinavia USA/Canada
Guidelines on Writing a Report on an Invention





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