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Cool
white lamps produce eye strain, headaches and fatigue because of the use
of unbalanced phosphors resulting in poor optical performance due to a low
color rendering index and color temperature.
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Cool
white lamps use inexpensive components. As a result the performance
curve of cool white lamps drops rapidly which results in low hour rating
performance and poor lumen maintenance.
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Cool
white lamps have been banned in all government buildings in Germany
because of the clear health risks involved.
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Full
Spectrum lamps reduce levels of cortisol, the stress hormone, cool white
lamps actually contribute to high levels of cortisol.
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Full
Spectrum lamps slow down the aging process of the retina, reduces skin
cancer and generally improves our overall mood and feeling of well-being.
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Physiological
studies have also conclusively shown that, under full spectrum lamps,
humans have increased oxygen intake, reduced heart rate, increased ability
to absorb vitamin D, calcium and improved muscle utilization. (Hughes,
1986) (Neer, 1984)
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Independent Tests have been applied to every popular
light therapy fixture on the market and found that those who do not use true
color,
full spectrum lamps will call their cool white lamps
"broad spectrum" or low level full spectrum lamps. These terms
do not exist within the lamp manufacturing industry.
The term "broad-spectrum" is simply a marketing
term used to justify the use of antiquated cool white fluorescent lamps which
use technology that is over 75 years old.
They might also claim that their ballast transforms their
cool white bulbs into full spectrum bulbs. This is not possible.
Beware -- some companies list user hours for much more than the average life
of the lamp and will not guarantee these user hours (e.g., listing 20,000 user
hours as the lamp life when the average first burnout is 3,000 hours).
We suggest when purchasing full spectrum lights to get their
performance Guaranteed in writing and buy the best quality light you can get.
ALSO BEWARE: That the majority of Guarantees are for limited use (e.g.,
four hours per day) and only apply to residential use. Don't settle for
less than 24/7 Guarantees that may be used in Residential or Commercial
applications.
MAKE THE SWITCH TO FULL
SPECTRUM AND PROTECT YOUR EYES,
IT WILL BE WORTH IT IN
THE LONG RUN!
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Where to Find Help:
Michael A. Horigan, M.S., Lighting and Energy Consultant
101 East State Street, Suite 108, Ithaca, New York 14850
Phone: 607-277-5089; Toll-free: 1-800-257-8353,
extension 267
Can answer questions and provide you with further
information regarding treatment of SAD (Seasonal Affective Disorder), Light Therapy
and resources for full-spectrum lighting.
