dinosaur thoughts on that topic:

http://www.qwantz.com/index.php?comic=2859

On Tue, Jan 19, 2016 at 1:41 PM, OlRivrRat <OlRivrRat@comcast.net> wrote:

> On 15 Jan , 2016, at 8:59 PM, John Rodgers wrote:
>
> > The human eye is not designed to deal with that
> > bluewhite light, wut with a yellow light, as in sunlight. Thousands of
> > years of evolution at work.
>
>         This is actually Quite Incorrect ~ The "Normal" ColorTemp' of
> SunLight @ Earth SeaLevel
>
> Is considered to be 5780ºK ~ All WhiteLight between about 4400K & 12000K
> is referred to as
>
> "Bluish White" ~
>
> Atmospheric Conditions & Time of Day or Night or Whatever
> LightingConditions You Happen to
>
> be Viewing Your Surroundings under have a Huge influence on what Your Eyes
> are Accustomed
>
> to Seeing as Our Eyes & Brains, in Concert, are Constantly Adjusting to
> make the Ambient Light
>
> that We are Immersed in, @ any given time, Seem Normal ~ If You are
> Driving on a road that is
>
> Illuminated solely by Your HeadLights then it is Your Headlights
> ColorTemp' that Your Eyes&Brain
>
> Adjust to ~ So if Your HeadLights are OldYellers, down around 2K, & You
> happen upon a vehicle
>
> that has Sylvania SilverStarUltras (ie Me) which sport a Temp' of 4100ºK,
> Your Eye/BrainCombo
>
> will VeryLikely See My Lights as Being Extremely BlueWhite while If I am
> riding behind My SSSUs
>
> & encounter an oncoming set of SSSUs I will Perceive Them to be a Fairly
> Normal White ~
>
>                                                         ORR ~ DeanB
>