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- Path: sparky!uunet!vtserf!vtcc1.cc.vt.edu!millnerrl
- From: millnerrl@vtcc1.cc.vt.edu (CALLABLE_TPU)
- Newsgroups: sci.astro
- Subject: Re: Moon Illusion (was Re: Lunar Astronaut ...)
- Message-ID: <18NOV199215323288@vtcc1.cc.vt.edu>
- Date: 18 Nov 92 20:32:00 GMT
- References: <1992Nov16.220542.15162@mav.com> <1992Nov17.122236.26582@hemlock.cray.com> <1992Nov17.174839.1@stsci.edu>
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- Organization: Virginia Tech, Blacksburg, Virginia
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- The experiment was preformed by a group of psychologists. The aparatus used
- was a camera mounted on a tripod mount. Pictures were taken at regular
- intervals and the aparatus was changed only by tilting the camera up to have
- the moon in the center of the film. The images were measured by calipers and
- found to be the same size. Their explanation was that, the brain guages
- aparent size and distance by refrence to other objects in the visual field.
- The brain does not work like a computer, the light that goes in your eyes is
- not always interpreted linearly, sometimes fudges are introduced by trying to
- interpolate more info that just two flat pictures. The object in the visual
- field is the horizon, and possible trees, buildings etc... When the moon is
- "free standing" in the sky, we do not have other objects to compare it to so
- its aparent size is different.
- Anyone out there done the calculation for atmospheric lensing? I am not sure
- which explanation I buy but until I see (or do) the experiment myself I guess
- one seems as plausable as the other.
- Just my $0.002 (more damn budget cuts)
- Robert
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