> The more you reveal one, the less the other. > http://www.upscale.utoronto.ca/GeneralInterest/ Ops. The link should be http://www.upscale.utoronto.ca/GeneralInterest/Harrison/Complementarity/Comp Copen.html See the Chinese traditional Yin-Yang Symbol, and related 'smooth transition', into Bohr's Coat of Arms.