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practicality of wattage vs lux for home lighting..

the current bulb i need to replalce is
~~~
[FULL SPECTRUM LAMP; 150W A21 FROSTED; AVERAGE 5,000 HOURS; LUMEN OUTPUT 1550; Medium Base]
right now 6 of these lights the computer room.

1)
the below is http://www.amazon.com/Spectrum-Light-ALZO-Compact-Fluorescent/dp/B0018OS06S 
is 27W compared to 150W that I am trying to replace.. what is the practical effect of going up or down on Wattage? (it is more bright proportionally or does it take about more electricity intake or both)

2)how does all of this relate to 'lux'?
http://www.walmart.com/ip/Verilux-VT05FWW4-Verilux-HappyLight-6000-Full-Spectrum-Light-Therapy-System/13916977
why is the 'lux' not mention in the first amazon link? or does it go by another terminology?
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thanks- helpful..
viki, you got the link right...

just for comparison, between the below two, if bright is my primary need, i should go with the higher wattage one, right?
(40 vs 150)
http://www.lumiram.com/chromalux-incandescent-light-bulbs/8-g25-clear.html
http://www.lumiram.com/chromalux-incandescent-light-bulbs/2-a9-clear.html
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but are these 2 statements opposing each other:
viki:keep in mind that may have 16 lumens per watt
rindi:Watts only tell you how much electricity the lamp uses
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Gary, is 'color temp' another phrase for lux?
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my friend confirmed from store: these 3 are the options available..and it could be replaced today. if brightness was the top pic, would suggest the middle option as best?

full Spectrum: 150W A21 (Frosted) - lux 1550
full Spectrum: 100W A21 (Frosted) (Uses Only 72 Watts) - lux 1545
full Spectrum: 40W G25 Clear (does not mention lux value)
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<<
is 'color temp' another phrase for lux?
NO.
>>
The link does not show the Colot temp, does it:
http://www.lumiram.com/chromalux-incandescent-light-bulbs/2-a9-clear.html
is there a formula to calculate it ourselves?
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>>LED bulbs are indeed a LOT more expensive than incandescents ... but they last a LOT longer (5-10 times) and use a LOT less power.    They're the only bulbs I buy these days.

good to know.. but inspite of high lux, they can't be categorized as 'full spectrum', right?
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>>What do you mean by the "best"?
150W gives you more lumens, more light output, but consumes more wattage.
>>

i calrrified now and the advertisement says below specifics:

full Spectrum: 150W A21 (Frosted) - lux 1550
full Spectrum: 100W A21 (Frosted) (Uses Only 72 Watts) - lux 1545

even though the second one says 100W but the ad also says it only uses 72W but its lux is almost same as the 150W one?
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viki, in the pdf you shared, they don't mention color temp for the regular FS bulbs, but only for FLUORESCENT; is there a reason? (or are they interrelated)
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>>it'd be interesting to compare the performance of a bulb with a color temp of 5000 against what you're currently using ...
how do you suggest this performance test? (are you referring to longevity)

>>For a workplace, I'd think you'll want a color temp of 4000 or higher.
what is the theory behind this, Gary? higher color temp affect work productivity?
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>>The CFL has usually a narrow light spectrum compared with incandescent.

1)
are these
http://www.lumiram.com/chromalux-incandescent-light-bulbs/8-g25-clear.html
http://www.lumiram.com/chromalux-incandescent-light-bulbs/2-a9-clear.html
incandescent or CFL?

2)in your graph, what are those (extremely) sharp peaks in CFLs?
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thanks for your helpful recommendations. will test them in phases :)