This article describes a new clear quartz window which does not block UV light. The discovery of beneficial effect of UV light in this article was assigned to work by Dr. William T. Bovie of Harvard in cooperation with C. C. Little of the University of Maine. The benefits of UV rays squares well with the more recent research about the importance of Vitamin D3 in our health.
The Sun As Your Doctor (original article)
Vitamin D Council (the best source of information on Vitamin D)



