18-06-2011, 01:13 PM
Whatever dimming method is used I would assume it is to prolong the life of the bulb for the world record attempt. I don't suppose it's light is needed, it is just there as an exhibit.
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World's oldest light bulb
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World's oldest light bulb - by Ian E G7OLT - 18-06-2011, 07:25 AM
RE: World's oldest light bulb - by fido - 18-06-2011, 09:28 AM
RE: World's oldest light bulb - by beam me up schottky - 18-06-2011, 09:59 AM
RE: World's oldest light bulb - by Skywave - 18-06-2011, 11:30 AM
RE: World's oldest light bulb - by beam me up schottky - 18-06-2011, 12:47 PM
RE: World's oldest light bulb - by Skywave - 18-06-2011, 12:59 PM
RE: World's oldest light bulb - by fido - 18-06-2011, 01:13 PM
RE: World's oldest light bulb - by Skywave - 18-06-2011, 01:33 PM
RE: World's oldest light bulb - by fido - 18-06-2011, 01:39 PM
RE: World's oldest light bulb - by Skywave - 18-06-2011, 02:22 PM
RE: World's oldest light bulb - by beam me up schottky - 18-06-2011, 02:48 PM
RE: World's oldest light bulb - by Skywave - 18-06-2011, 03:54 PM
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