Re: [Phys-L] color of the sky

[Paul Nord <Paul.Nord@valpo.edu>]

Still purple.

By the way, the human eye doesn't see purple all that well.  It looks blue
to you even though the purple is actually brighter.

Paul


On Wed, Sep 25, 2024 at 3:41 AM John Denker via Phys-l <
phys-l@mail.phys-l.org> wrote:

> On 9/24/24 10:41 PM, bernard cleyet via Phys-l wrote:
> > IIRC, max. scattering is when the scatterer is ~ the size of the optical
> > wave length.  So a single molecule of N2 or O2 is much too small.
>
> Much depends on what you mean by "the" scatterer.
> Sure, the molecules are small, but they are very numerous.
> If they scatter coherently, the effect can be very large.
>
> This is discussed in detail in remark 4 here:
>
> https://www.av8n.com/physics/blue-sky.htm#sec-remarks
>
> ==============
>
> More generally, that article discusses in gory detail
> "Why the Sky is Blue"
>
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