I'll go with John Wallis. Steve ADavidhazy wrote: > > 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. > > Andy
