Ron, (and with apologies to Henry for hijacking his problem) just a quickie. Arising from > Stan Houston's query: "what is the speed of dark". and your response > Stan, the speed of dark is > none. Dark is the abscence of light.) > -- In the absence of light, can wehave a concept of dark? Dark seems to me to be dependent upon light. What do you think? Beth Leslie > ron 1936, dz PD 1984 Ridgecrest, California > Ronald F. Vetter <[log in to unmask]> > http://www.ridgecrest.ca.us/~rfvetter >