Re: [APD] lighting temperature question

[Russell Vance <russell_vance at gmail.com>]

> 
> 
> Why reef light is blue -- Is it refraction that causes the
> deeper reef lighting to be blue? I believe it is due mainly
> to the higher energy end of the spectrum (blue) being able
> to penetrate farther into the water before being absorbed.
> It's not the Rayleigh effect, which makes the sky blue,
> where the shorter wavelengths are scattered more.
> 
> 
That is actually exactly why it is blue. Longer wavelengths of reds etc. 
dissipate and shorter wavelengths of blue scatter the further down you go.
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