Re: Rainbows in 3D?

[P3D John W Roberts <roberts@xxxxxxxxxxxxxxxxx>]

>Date: Sat, 9 Nov 1996 21:50:51 -0600
>From: P3D bob wier <wier@xxxxxxxxxxxxxxx>
>Subject: Re: Rainbows in 3D?

>I doan wanna be argumentative, but if you look at my slightly hyper
>specimen on my web page, it *clearly* looks closer than the background
>mountains.

>http://bobcat.etsu.edu/~wier

>My explanation for that is that the apparent origin of the light beams are at the point of reflection - which in this case was the rainstorm which was
>closer to the view point than the mountains...

[My machine was down this weekend, and I just got this on Wednesday, so
apologies if it has been addressed already]

Didn't you mention that there was some motion of the clouds between the two
shots? At some times of the year, when the sun is low in the sky, it has
considerable "sideways" motion. Even a slight azimuthal motion of the sun
between the two shots might be enough to cause the two views of the rainbow
to converge, and move it from "infinity" to "far away, but not infinity".

(Perhaps even the up-down motion of the sun would do it, depending on how
much of the rainbow is showing - not sure of the geometry.)

John R

[I haven't had a chance to look at the image yet - I'm looking forward to it,
but very busy. :-) ]


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