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Discussion and Debate
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Pelosi giving Biden an 'escape hatch'?
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<blockquote data-quote="SimplyMe" data-source="post: 75316067" data-attributes="member: 9588"><p>I'd give you the same advice. Yes, 1802 was not technically a light bulb, but Humphry Davy created light from passing an electric current through a piece of carbon. In 1840 was, as I recall, the first use of glass vacuum tubes. You could argue it was only in 1860 that there was a first "light bulb" as it was the first to use an enclosed glass bulb using paper filaments to pass the current through, and later a cotton thread. In 1874, Henry Woodward and Mathew Evans patented an incandescent light bulb in Canada in 1874 (five years prior to Edison). </p><p></p><p>Edison obviously improved on the work of those that went before, specifically working on finding the best substance to pass a current through to create light. Carbon burned too bright and burnt too fast, platinum was too expensive, and it was not feasible at the time to vacuum the gas out of the bulb to produce them. What Edison did is to play with the substance "burned" by the electric current that provided a good amount of light and that would last for hours, enough to be commercially viable.</p></blockquote><p></p>
[QUOTE="SimplyMe, post: 75316067, member: 9588"] I'd give you the same advice. Yes, 1802 was not technically a light bulb, but Humphry Davy created light from passing an electric current through a piece of carbon. In 1840 was, as I recall, the first use of glass vacuum tubes. You could argue it was only in 1860 that there was a first "light bulb" as it was the first to use an enclosed glass bulb using paper filaments to pass the current through, and later a cotton thread. In 1874, Henry Woodward and Mathew Evans patented an incandescent light bulb in Canada in 1874 (five years prior to Edison). Edison obviously improved on the work of those that went before, specifically working on finding the best substance to pass a current through to create light. Carbon burned too bright and burnt too fast, platinum was too expensive, and it was not feasible at the time to vacuum the gas out of the bulb to produce them. What Edison did is to play with the substance "burned" by the electric current that provided a good amount of light and that would last for hours, enough to be commercially viable. [/QUOTE]
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