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Didn't Thomas Edison Invent the Light Bulb?
21 people lay claim to having independently invented the light bulb before thomas edison. The first ever a demonstration in front of that a light could light up a room was done in front of an audience of 700 people by a person named joseph wilson swan. But then also, so did someone named marsel an jobard in belgium. So did william grove. So did frederick moylans,. William adelaru and heinrich gobel among others. All these people actually invented the light bulbs around the same time.