Someone once told me that it is not the span of a plane so much as the viewable width dimension of the wing that makes it able to be seen easily. Like the way a plane can become near invisible to the eye as it flys directly toward or away from you. Still the same span but very hard to see. [EMAIL PROTECTED] wrote: > > In a message dated 02/18/2001 7:34:40 PM Central Standard Time, > [EMAIL PROTECTED] writes: > > > Can anyone see a 5.33 meter plane at 3400 feet ? Mike > > I seem to recall that human eyes can resolve one minute of arc, so the 17 > minutes of arc subtended by 5.33 meters at 3400 feet is well within that > range. Theoretically, you could see a 1 foot disc at that distance, though > I'd imagine atmospheric effects may diminish that (I'd probably have wished > I'd reined in my HLG before it got that high :) > > Bill Wingstedt > RCSE-List facilities provided by Model Airplane News. Send "subscribe" and >"unsubscribe" requests to [EMAIL PROTECTED] RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED]
