In article <42D76280.9DDC5608@xxxxxxxxx>, Marry wrote:
> Here's an answer Professor Morrison gave in 1953:
> "Longer focal length optics produce more stable higher resolution images,
> because the longer focal length optics give light a long tube to stabilise
> in. It can be shown that in the shorter tube telescopes light does not have
> the time or distance to settle down from its journey through space and
> the turbulent atmosphere. Light which can be stretched out in a long tube
> vs a short tube, has both the time and the distance to settle down and rid
> itself of turbulences, which affords a much better image at the receiving
> You cant beat them apples (explained by a professor of physics)!
Wow. A physicist said *that*? Sounds like an answer worthy
of Ask Dr. Science!