XPost: alt.magick, sci.med.vision
From: dalton@nfld.com
In article ,
David Dalton wrote:
> In article ,
> Mike Duffy wrote on alt.magick :
>
> > On Mon, 10 Mar 2014 02:17:36 -0230, David Dalton wrote:
> >
> > > ... During the sun stare there was a tunneling ... similar to
> > > what you see when you place two mirrors facing one another
> >
> >
> > When light falls upon a flat surface, two things happen:
> >
> > 1) Some light is reflected. (Incidence angle = reflected angle)
> > 2) Some light is refracted. (I1 * SIN(A_incident) = I2 * SIN(A_Refract))
> >
> > , where I1 & I2 are the "indices of refraction" of the materials. The
> > coefficient of transmission (i.e. what fraction of the power is reflected
> > vs. refracted) are a bit more complicated, (depends on wavelength, etc.).
> >
> > As you say, when two parallel flat surfaces of transparent meterials are
> > impinged by a light beam, there is a characteristic "tunnel effect. They
> > need not be perfect mirrors, or perfectly parallel if they are close, they
> > only need be transparent materials with differing refaction indices.
> >
> > This also happens within the eye itself. The surfaces involved are the
> > cornea (fron & back), aqueous humour, optic lens (front & back), and
> > vitreous humour.
> >
> > The surfaces are not perfectly flat, but over the small area passed by a
> > beam they are close enough. I have noticed this effect myself with street
> > lights after a visit to my opthamologist when they put the drops in my eyes
> > to completely dilate the irises.
> >
> > I believe that you said you were not wearing your glasses when you had the
> > tunnel effect vision. The same situation applies because your iris
> > (although probably resticted) was not in the proper plane to do its
> > intended job of blocking out-of-focus rays. If you had been wearing your
> > glasses, the multiple images of the sun would have been focused on one
> > spot, causing permanent eye damage.
> >
> > So what you saw was not a glimpse into other dimension, but simply an
> > optical effect.
>
> Perhaps. Yet nobody on sci.optics or sci.med.vision
> has yet mentioned that. Also if it was such an optical
> effect I would have expected a larger tunnel starting
Also wouldn't it have been a bright tunnel rather than
the dark tunnel I observed?
> near me rather than a small dark tapered tunnel starting
> at the sun, like a black swan's tail of the sun.
>
> I have added sci.optics and sci.med.vision to the
> Newsgroups line so those there can comment. But as
> a geophysicist I have enough background in optics
> and ray tracing that I should be able to research
> the matter myself, later.
>
> And what about the giant butterfly wings of space
> that folded in on me (like a giant metal vegetable
> steamer or umbrella ribs in the sky) just after the
> sun stare and just before I blacked out? And what
> about my blue rose vision later that night?
>
> > > But due to risk of vision damage I wouldn't recommend
> > > that anyone else repeat the incident,
> >
> > It is always a good idea to remind others of this who may try to repeat
> > your experience. I have done the same with my reference above to "permanent
> > eye damage".
--
David Dalton dalton@nfld.com http://www.nfld.com/~dalton (home page)
http://www.nfld.com/~dalton/dtales.html Salmon on the Thorns (mystic page)
"But once there was a darkness, deep and endless night
You gave me everything you had, oh you gave me light" (Sarah McLachlan)
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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