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 5780�K ~ 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 4100�K, 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