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History of the Light Bulb by Noah Shpak

History of the Light Bulb by Noah Shpak. The Beginning of a New Era. In the early 1800s - candles, oil lanterns, and gas lamps. In 1809, chemist, Humphrey Davy began researching the incandescent light bulb. Concept and Cost.

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History of the Light Bulb by Noah Shpak

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  1. History of the Light Bulbby Noah Shpak

  2. The Beginning of a New Era • In the early 1800s - candles, oil lanterns, and gas lamps. • In 1809, chemist, Humphrey Davy began researching the incandescent light bulb

  3. Concept and Cost • The design relied on the high melting point of platinum that would allow it to operate at high temperatures. • Although it was an efficient design, the cost of the platinum made it impractical for commercial use.

  4. A Step Forward • Many other scientists improved the initial design. Thomas Edison, however, developed the first practical incandescent light bulb.

  5. A Break Through • The invention of ductile tungsten sparked the development of the modern tungsten light bulb in 1906-10. Ductile tungsten has many favorable properties: • a high melting point: 3,410 C • low evaporation rate at high temperatures: 10-4 torr at 2,757 C • tensile strength greater than steel

  6. Structure of Today’s Light Bulb

  7. Light Bulbs of Today • The Light bulb of today has: • wide, low-cost availability • easy incorporation into electrical systems  • adaptable for small systems • low voltage operation, such as in battery powered devices • wide shape and size availability

  8. The Future • In the future, light bulbs will be even smaller and brighter.

  9. Thank You This has been a Noah Shpak production

  10. Bibliography Edison. (n.d.). Edison's Light Bulb. Retrieved September 8, 2011, from www.passion-4-pizza.com/history/pizza Light Bulb Picture. (n.d.). Light Bulb Picture. Retrieved September 7, 2011, from goshycab.com/wp-content/uploads/2010/09/5-light-bulb.png Mrs. Steiner's Chemistry - Part 10. (n.d.). McCann Technical School. Retrieved September 8, 2011, from http://blogs.mccanntech.org/steinerchemistry/page/10/ The Light Bulb. (n.d.). History of the Light Bulb. Retrieved September 7, 2011, from invsee.asu.edu/modules/lightbulb/meathist.html

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