Really?!! And which Greek letter would that be? I don't have the answer either, but it's not a Greek letter. Actually, I believe it's a ring, on edge, twisted. The loop is endless. Regards, Bob... From: "ADavidhazy" <ANDPPH@ritvax.isc.rit.edu> > AndrewF posed: > "You've all seen the flat eight on your lens - know who 'invented' it?" > > I have seen it but do not know who decided that it would be the infinity > sign in optics. It is a Greek letter so maybe there is a good story to go > along with this! It would be a great question for an exam if it had a good > answer.
