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[personal profile] fivemack
This is the 85W-from-socket 425W-incandescent-equivalent-power lightbulb that I bought to see whether it would make me happy.

For size comparisons, that is an Apple smallish keyboard, a real apple and a real kiwifruit. The fruit are normal-sized examples of their ilk, and the bayonet on the lamp is of the standard size.

Date: 2009-12-01 05:00 pm (UTC)
From: [identity profile] del-c.livejournal.com
Those of us who enjoy space opera know the factoid about how a "red" sun would look just like a 100W bulb, because tungsten bulbs are actually very red. That says humans can't really tell temperature by looking at a grey emitter. We particularly can't tell whether we're looking at a grey emitter or something that just mimics one in a few wavelengths, which is why fluorescent tubes look white-hot even though they aren't melting the kitchen ceiling.

Date: 2009-12-01 07:18 pm (UTC)
From: [identity profile] htfb.livejournal.com
That depends on how bad the chromatic aberration of your spectacles is.

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