The Filament of Bulb is of

  1. Mercury
  2. copper
  3. tungsten
  4. None of these
Abdul Salam Newbie Asked on 13th August 2015 in General Knowledge.
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    The Filament of Bulb is of tungsten. This word comes from the Swedish words  ‘tung sten’ means heavy stone.  In 1781, Carl William Scheele hypothesized the existence of tungsten in tungstic acid.

    • Atomic Number: 74
    • Atomic Symbol: W
    • Atomic Weight: 183.84
    • Melting Point: 6, 191.6 Farhenite
    • Boiling Point: 3,068.3 Farhenite

    Thomas Alva Edison was the inventor of the electric bulb, ‘Edison one research make our life, future bright’ we can say’s that a man who change the darkness in the light. Before the Edison twenty-three type different type bulb had developed. The bulb itself is made of glass and contains a mixture of gases, usually argon and nitrogen, which increase the life of the filament. The Filament, the incandescent light bulb turns electricity into light by sending the electric current through  a thin wire called a filament. The filament is made up mostly of tungsten.

    Monis Rasool Professor Answered on 1st September 2015.
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