YES NOPE9 wrote: > To be "white" is one required to include all wavelengths of light from > infrared to ultraviolet ? I am not sure what that means. > Or does one just hit the high points of the cone cells ? I believe it's the latter. Vitaliy -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist