Nature's own full-spectrum light may be best, but it isn't always available.
Full-spectrum lighting fixtures provide an artificial simulation of the spectrum available in natural sunlight. The body uses and needs natural sunlight to function properly. From the ability to absorb vitamins, the ability to regulate moods and perform daily routines to seeing colors the way nature intended, natural full-spectrum lighting impacts our lives from every angle.
SAD
The shortened length and lower intensity of available natural light during the winter season is a cause of seasonal affective disorder (SAD), also called "winter depression." The problem affects individuals differently, but the general effect of a long-term lack of natural light is depression, fatigue, irritability and inability to perform normal everyday functions. Light therapy improves the symptoms of SAD dramatically and can be done in the comfort of a patient's home.
Painting
Colors appear truer to form and sharper in natural daylight or in natural full-spectrum lighting. Many artists prefer to use natural full-spectrum lighting when painting indoors to ensure proper color results. Physiological psychologist Johannes von Kries explains in his transform theory that the human eye changes its adaptation and use of light in different situations so the perception of color changes. It is only true in natural full-spectrum light.
Learning Ability
In 1973, Dr. John Ott studied the effects of natural full-spectrum lighting and regular florescent lighting on students in the first grade in Florida. Students in the natural lighting had marked improvement in attention, retention, energy and mood. Students in the florescent lighting were lethargic, moody and didn't get nearly as good grades. Replacing overhead florescent lights with natural full-spectrum light bulbs has a positive effect within a few hours of insertion.
Avian Settings
Keeping pet birds in a house is good for the humans, but can be hard on a bird. They need natural full-spectrum lighting to function properly and even see things correctly. Hanging a full-spectrum lighting fixture above the play area, or cage, of a bird improves its thyroid and other glands to work properly. The birds will be able to see as they would outside in the natural sunlight, and be more active and alert.
Shift Work
Shift workers who work the graveyard shift are likely candidates for SAD in any season. The use of natural full-spectrum lighting in the workplace improves the symptoms dramatically.
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