Re: move where
- From: "Ann" <nntpmail@xxxxxxxx>
- Date: Thu, 05 Jan 2006 17:58:41 GMT
On Thu, 05 Jan 2006 09:08:51 -0800, jJohn Klausner wrote:
> Ann wrote:
>
>> On Wed, 04 Jan 2006 07:55:31 -0800, jJohn Klausner wrote:
>>
>>>Ann wrote:
>>>mostly snipped
>>
>> <...>
>>
>>>... it's hard to believe that _anybody_ in southern California could
>>>_possibly_ need full spectrum lighting to forestall problems with
>>>inadequate sunshine, but there are people who are convinced that they
>>>need it. Oh well. Which is to say...I don't know about the delayed
>>>dormancy effect of sodium lights - I _do_ know that commercial
>>>nurseries in our area use them, and if Dr.Ott's work is correct, it
>>>seems that different wavelengths affect various plants differently.
>>>Fascinating topic. Well, to some of us! SueK
>>
>>
>> I doubt there is a whole of concern in SoCal about the temerature going
>> down to 15F before plants have gone dormant. <g>
>>
>> I used to buy gro-lights for starting seedling - until I read that one
>> warm and one cool regular fluorescent was about the same as far as the
>> plants are concerned. Iirc, the gro-lights are about the same as the
>> ones supermarkets use at their meat counters.
>
> Don't know about Gro-lights - haven't checked them, although we get some
> requests for them. We usually send them to the local nursery - they
> stock them. As for the meat counters - warm white...full 40 watts, as
> opposed to the usual 34W of most bulbs which are usually labeled F40,
> and not counting Home Depots "utility lights" which are 25W but still
> labeled F40. Of course, they've recently changed the labeling on four
> footers from F40 to F34 just to confuse things. Same bulb - different
> name. But you're right about the two different color bulbs - they cover
> both ends of the color spectrum. Well, almost. Actually, you might do
> better if you'd get a DX (Daylight Deluxe) and substitute it for the
> cool white, but if what you have works for you, why mess with success!
> WarmWhites are 2700K (color is measured in terms of Kelvin temperature),
> CoolWhites are 41K, and DXs are 65K. Very blue-white looking.
> Theoretically very close to natural light. Good for older people who
> are beginning to have problems with detail discrimination - you know -
> that walk to the window to read something without glasses thing...! SueK
Thanks! I think you've solved a "mystery" for me. I got a fluorescent desk
lamp from Walmart that was noticabaly better for reading printed material
with thin type faces. Unfortanately it uses a pricey tube that would cost
almost as much as the lamp to replace. I did know to check and be sure
the next desk lamp has a standard (cheap) tube. Now I also know to get
cool white tubes ... and ignore the fact that they make my hands look
really ugly. <g>
.
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