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Thomas Edison invented the incandescent light. Who made the first fluorescent light? (30 points)

	Willis Whitnew
	Johann Geissler
	Thomas Edison
	William David Coolidge
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written by SteveD503 • topics: science block unblock • Technology block unblock • light block unblock • history of science block unblock • Thomas Edison block unblock and 2 more » • inventors • Inventions

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The AC/DC power debate was mostly settled in the 19th century. When was the last part of the Direct Current power grid shut off in New York? (40 points)

	1972
	1954
	2007
	1909
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written by SteveD503 • topics: electricity block unblock • New York block unblock • Thomas Edison block unblock • Nikola Tesla block unblock • history block unblock

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