Changes

==Optics==

==Optics==

In [[optics]], image distortion is a divergence from rectilinear projection caused by a change in magnification with increasing distance from the optical axis of an optical [[system]].

In [[optics]], image distortion is a divergence from rectilinear projection caused by a change in magnification with increasing distance from the optical axis of an optical [[system]].

<center>For lessons on the [[topic]] of '''''Distortion''''', follow [http://nordan.daynal.org/wiki/index.php?title=Category:Distortion '''''this link'''''].</center>

<center>For lessons on the [[topic]] of '''''Distortion''''', follow [https://nordan.daynal.org/wiki/index.php?title=Category:Distortion '''''this link'''''].</center>

==[http://en.wikipedia.org/wiki/Map_projection Map projections]==

==[http://en.wikipedia.org/wiki/Map_projection Map projections]==