> Around 2 a.m. tomorrow morning, when you want to prove to > that traffic > cop that you are in fact not inebriated, explain this to > him (or her). A lot of ideas come to mind, but none has anything to do with physics. Instead, I was picturing a funny scene under the rain, and it involved a very perplexed lawyer. Anyway, it resulted in the Supreme Court ruling the deployment of certified Max-Plank-Constant-compliant windshields, eyeglasses and traffic light fresnels. I wish you all a very happy New Year. ********************** www.alberto-tirado.com