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General Astronomy >> Outreach

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skyguy88
sage


Reged: 11/13/06

Loc: Prescott, AZ
Re: Most Interesting Questions new [Re: Ira]
      #6037485 - 08/20/13 11:25 PM

Magnification becomes completely ambiguous with a video display. You double your magnification by halving your distance to the screen.

Bill


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jmandell
sage


Reged: 06/15/11

Re: Most Interesting Questions new [Re: gravitino]
      #6037764 - 08/21/13 06:34 AM

Quote:

Quote:

"This thing has great resolution. How many pixels does it have?"




Cool question. In this case, your EYE is acting in place of the camera, so the each individual receptor cell is like a pixel. If you assume you are only using the rods (non-color sensitive cells on your retina) in the dark, then there are about 120 million rods. If a megapixel is 1 million pixels, that is about 120 megapixels. :-)

Clear skies,
-- Shane




Very interesting. I'd given some more thought to it, but assuming each rod as a pixel never occurred me. I suppose if I ever get that question again, I'll have an answer!

Thanks


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