This morning I went out to the airport. It is about time I get off my duff and start the annual on the Cessna. Bloke showed up about 8:30. He was on his way to join up with Rodney and fly to Hobby Airport for an activity with the 1940 Air Terminal Museum. As he was getting ready to taxi out I snapped a few photos. One thing I noticed was that you couldn't see the spinning prop in many of the frames. The main reason is that the prop is a neutral grey and the arc of the prop results in an unobservable darkening, as you can see in today's photo. The human observer can't see the prop as well. Maybe painting the tips a bright color might improve visibility.