Question

Joseph Swan independently invented one of these objects that was similar to the Sprengel pump. The oldest-known operating example of these objects is the “Centennial.” (-5[1])Bayonet mounts are sometimes used on these objects, (-5[1])although Bi-pin (-5[1])connectors are more common. “Compact” forms of these objects use toxic mercury. (-5[1])Inert gasses like (-5[3])(*) argon are used in these objects to prevent oxidation. (10[1])Filaments are used (10[1])in old (10[1])examples (10[1])of these objects (10[1])which are being (-5[1])replaced by the more efficient LEDs. For 10 points, (10[1])Thomas Edison invented the (10[1])incandescent (10[3])form of what luminous objects (10[2])whose (10[1])power can be measured in watts? ■END■ (10[1])

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