BirdForum is the net's largest birding community dedicated to wild birds and birding, and is absolutely FREE!

Register for an account to take part in lively discussions in the forum, post your pictures in the gallery and more.

Reply to thread

Message: <blockquote data-quote="elkcub" data-source="post: 412120" data-attributes="member: 14473">Sorry my friend.  The definition of Visual Acuity is "the ability of the human visual mechanism to distinguish small spatial separations or intervals between portions of the visual field."  English & English, A Comprehensive Dictionary of Psychological and Psychoanlytical Terms, 1958.  Definitions in optical physics are also extremely well defined but obviously apply to the optics of the binoculars, and some anatomical portions of the eye.  A standard English dictionary such as Webster's usually isn't sufficient to express technical ideas, so it can get exasperating I'm sure.  But I do enjoy your way of saying things anyway.  |=)| -elkcub</blockquote>