Plants, Animals, and the Human Body All Require Nature's Balanced Light Spectrum. The scientific study of how light affects living things started in the early 1960's when Dr. John Ott, then a time-lapse photographer, was hired by Walt Disney to film plants growing and blooming. Ott discovered that a plant's growth and development is affected by the color of the light it is exposed to. Significantly, Ott discovered that the color distortions found in ordinary indoor lighting could drastically alter a plant's normal growth and reproductive cycles.

If indoor lighting could do this to plants, Ott wondered, what was it doing to animals and humans? In recent years, the new science of photobiology has been finding important answers:

Indoor lighting can make you tired. In 1980, Dr. Alfred Lewy published a study at the National Institute of Mental Health that showed how different types of light act on human bio-rhythms. When darkness falls, the brain produces a hormone that makes us sleepy. The study found that conventional indoor lighting - which lacks the full natural spectrum - "is interpreted by the brain's pineal gland as darkness." - This explains why many people feel depleted after being indoors all day.

The American Medical Association recognizes a distinct form of depression caused by lack of natural light. The high rate of depression people experience in winter has been linked in recent years to inadequate light stimulation. In 1984, the American Medical Association officially recognized a form of depression called Seasonal Affective Disorder, or SAD. In late autumn and winter when people are exposed to less outdoor light, SAD sufferers become depressed, tend to oversleep, and crave carbohydrates. A commonly pre- scribed treatment for SAD is exposure to high levels of natural spectrum lighting.

The wrong light may interfere with learning ability. In Health & Healing, Julian Whitaker, M.D. writes, "prolonged exposure to conventional light may make children hyperactive and interfere with their ability to learn." In a study conducted by Dr. Ott at a Sarasota, Florida, elementary school, students exposed to natural spectrum lighting were less hyperactive than those in the control group. A 5-year Canadian study conducted by Dr. Harry Wohlfarth also indicated a link between lighting sources and levels of stress, absenteeism and overall achievement in the classroom.

Cited by science writer Susan Seliger,
" The Right Light," Home Office, Fall 1986Vivid, Glare-Free Illumination Lets You See More Comfortably and Accurately

The natural spectrum of JTV ENERGY LIGHTS"' also improves your ability to see. Reading, computer work, and close work become easier and your eyes feel refreshed and stay relaxed longer. A study done at Cornell University found that students who studied under natural spectrum light experienced less perceptual fatigue and better visual acuity than students who studied under ordinary light.

Our customers report that JTV ENERGY LIGHTS' are also of particular value when it is important to see colors accurately. They are a special boon to design studios, photography studios, printing plants, art galleries, furniture stores, paint stores, clothing and jewelry shops, dental labs, medical facilities, and museums. And because they let you see colors the way nature intended, they make indoor environments appear brighter and more cheerful. In fact, a number of users have remarked, "it's like having a skylight."

The superior technology that lets JTV ENERGY LIGHTS™ deliver true-to-nature illumination also makes them uniquely long-lasting. JTV light bulbs typically last at least 20,000 hours, and JTV fluorescent tubes last at least 33,000 hours. You'd have to replace an ordinary light bulb at least twenty-six times and an ordinary fluorescent tube as many as five times for every one time you'd replace a bulb or tube from JTV ENERGY LIGHTS".

Guarantee #2: Plus, there's a 2-year replacement guarantee on all JTV tubes, bulbs and floodlights. If a JTV ENERGY LIGHT burns out before its time, you will get another one free of charge.