Lovely Lightbulbs

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Gavin Scott
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Nini wrote:I'm a useless good for nothing, why not let me moderate?
:shock:
Nini
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Yes, it would be a bad idea but I would actually be around to pull my weight unlike Ison, the slacker.
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cdd
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marksi wrote:There are [...]warm[...] energy efficient bulbs coming along, and I'm guessing that there are huge stockpiles of the older [...]colder bulbs which need shifting.
Maybe I'm misunderstanding, but why is it an advatange to have light energy converted into heat? One of the advantages I thought of those energy saving bulbs is that they didn't heat up the room you were in.
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Gavin Scott
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cdd wrote:
marksi wrote:There are [...]warm[...] energy efficient bulbs coming along, and I'm guessing that there are huge stockpiles of the older [...]colder bulbs which need shifting.
Maybe I'm misunderstanding, but why is it an advatange to have light energy converted into heat? One of the advantages I thought of those energy saving bulbs is that they didn't heat up the room you were in.
"Warm" as in colour temperature - i.e. an amber tone of white as opposed to blue.
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cdd
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Ahh... *Smacks forehead*!
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Sput
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Marketing?
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nidave
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nodnirG kraM wrote:Though quite why the coolest colour temperature is described as "warm", I don't know.
Is it not to do with how much of the spectrum creates light in - the fuller the spectrum the more "sun like" it is supposed to be (and is better for you) but looks whiter than the yellow.
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Gavin Scott
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nidave wrote:
nodnirG kraM wrote:Though quite why the coolest colour temperature is described as "warm", I don't know.
Is it not to do with how much of the spectrum creates light in - the fuller the spectrum the more "sun like" it is supposed to be (and is better for you) but looks whiter than the yellow.
"Better for you" isn't quite right, but less straining on the eye for long durations, yes.

"Full spectrum" is rather difficult to replicate, but the closest in terms of balanced broad spectrum lamps - especially good at colour rendering - is a CDM-T.

Image

Its engineered to be long lasting, which has a minimal, but significant, effect on its spectral output. But you can't have everything.

Nothing domestic comes close, but you can pick them up for under £150. The lamp (or bulb, if you prefer) is about 25 quid. The rest is in the light fitting.

A couple washing across a painted white surface will give you a very, very pleasing light. They're rather harsh as a direct source though.
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Sput
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Know what else was engineered to be long-lasting and bright?

THE SUN.

That's not a bad attempt at emulating it though, I have to say!
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nidave
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Gavin Scott wrote:
"Better for you" isn't quite right, but less straining on the eye for long durations, yes.
Are they not supposed to reduce the effect of S.A.D (Seasonal affective disorder)
http://en.wikipedia.org/wiki/Seasonal_a ... e_disorder
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Gavin Scott
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nidave wrote:
Gavin Scott wrote:
"Better for you" isn't quite right, but less straining on the eye for long durations, yes.
Are they not supposed to reduce the effect of S.A.D (Seasonal affective disorder)
http://en.wikipedia.org/wiki/Seasonal_a ... e_disorder
Oh I wasn't thinking about SAD. Well then I suppose so, if you've no access to daytime rays.

On that point though, it was horribly dark in Edinburgh all day. Huge, looming dark clouds. Felt like before dawn on the way to work, and didn't get much better all day.

There's a ceiling mounted CDM-T lamp in the office, but it didn't make me feel any better.
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