A short essay on invention of the light bulb
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Edison used electric light to replace gas lighting (Pagán). In the 1870's, Edison took away metal for the use of the light bulb (“Incandescent Light” 1088). ... Edison made his first invention when he was 21 (Pagán). By the time Edison died he had patented or, single or jointly, 1,093 inventions (Matulka).
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The light bulb was a unique invention that took many tries to perfect, using different designs and improvements. The light bulb today has many different changes in it sense it was first made. The filaments today are now made from coiled tungsten (U”Incandescent Light”1089). The light bulb was not created by one person.
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