[LargeFormat] Re: rainbows, was R O Y G B I V
john frost
largeformat@f32.net
Thu Dec 11 19:44:29 2003
As with cars, people, and aircraft, their motion through the frame may
be fast enough to NOT be recorded, if using a slow shutter speed. If you
want to capture the reflection (or refraction)of a drop (or molecule) of
water, a faster shutter speed is needed.
john (:>)))
Alan Davenport wrote:
> At 11:47 AM 12/11/2003, you wrote:
>
>> A slow shutter speed allows the water molecules to run away (turn),
>> thereby loosing their contribution to the color.
>
>
> Are you serious? Hmmm. My understanding of the physics of rainbows, is
> that the bow is produced by internal reflections and refraction through
> water droplets, i.e., rain. I doubt if the fastest shutter could keep
> up with motion at the molecular level...
>
>
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