Mxsmanic wrote in
:

Maxwell writes:

Do you really think you see and visualize motion constantly. Perhaps
you should spend a little more time around and airport yourself. Many
propellers, especially the large diameter props found on radial
engines, will appear at times to be rotating slower, or backwards.
It's a fainter image than recorded on film, but the partnership of
the human eye and brain does not realize fluid motion.

This is completely incorrect. Human vision produces no such artifact.
Anything moving beyond a certain speed is simply a blur; it never
appears to move backwards.



Too easy


Bertie