Natural light is superior to artificial light in both intensity and quality. The brightness of light is measured in units called lux. A sunny summer day generates about 80,000 lux. A cloudy winter day in Alaska generates about 10,000.
The brightest indoor light produces only about 4,000 lux, or about 5 percent of a sunny day. Needless to say, artificial light is far more expensive. Artificial light levels are not enough to perform many tasks, like extended periods of reading. (Healthy Environments, 2003).
Natural light also includes a perfect balance of all seven colors in the visible spectrum (red, orange, blue, yellow, green, indigo, violet). Artificial indoor light leans toward the yellow and orange parts of the spectrum, making it difficult to judge and match colors with any precision. Full-spectrum light is needed for occupations ranging from graphic arts to medicine, where subtle changes in skin tone are often used in making diagnoses.
Moreover, high-intensity full-spectrum is critical to maintaining a healthy body.
The adverse effects of a lack of exposure to natural light have been extensively documented in the medical and psychiatric communities.
Tubular Skylights by Conrad can help you decrease your reliance on artificial lighting, and help reduce your energy costs. • Call Tubular Skylights at (931) 277-3707 today •