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• Incandescent light bulb
  ...able to outstrip the others because of a combination of three factors: an effective [[incandescent]] material, a higher [[vacuum]] than others were able to ach ...component in his system of electric lighting, and no more critical to its effective functioning than the Edison Jumbo [[electrical generator|generator]], the E
  104 KB (15,285 words) - 16:44, 16 December 2018