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chaosmage comments on My simple hack for increased alertness and improved cognitive functioning: very bright light - Less Wrong
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Comments (126)
Thanks for the data point.
LED prices just haven't come down enough yet.
I got halogen-buffed incandescents for the price, and because I was afraid fluorescent lights, if packed too close, might destroy each other and release that mercury.
LED lights are currently very slightly cheaper than any other type of lighting, amortized over the full lifetime of the lights. It'll probably get better.
Accounting for future value of the money, of course, it's more expensive. I'll take that over having to keep changing the lights, though.
Also, if you buy RGB(W) LEDs and add some work, you can choose your rooms color temperature at will. Keep it at 6k if you want to work, let it shift gently to 2k3 to help with a regular sleep rhythm, make it turquoise for a party...
Four CFLs in a cluster will be at least as happy as four incandescents in a cluster; possibly more so, given the much lower heat dissipation.
That's only true if they're built to tolerate heat as well as incandescents have to. Do you know they are?
Ooh ... good question. I have no idea.
Mind you, my experience of CFLs is that they blow out well before their claimed lifetime anyway on the crappy electricity we have around here. But I really, really like having daylight spectrum bulbs.