Re: Resolving Power of Retina

[T3D John Ohrt <johrt@xxxxxxx>]

T3D Rolf Henkel wrote:

> Humans have a fovea, so resolving power drops of rather fast away from
> the fixation point (that's the reason for saccades). In the center of
> the fovea, we have normally a resolving power of 1 minute (which
> transfers to about 3mm at 10m distance), which can be increased to 0.5
> minutes by high contrast scenes.

Astronomers and hunters are aware of the use "adverted vision", what you
are describing here, but you still can't tell that Jupiter or Venus have
phases under optimal viewing conditions.  ie contrast rations exceeding
10,000:1.

Any suggestions on the discrepancies of scientific findings vs scienrific
findings ?  :-)

Regards,

--

John Ohrt * Toronto * ON * Canada





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