Am 29.01.2017 um 15:13 schrieb Alain:

>> "In mesopic vision, eye response varies from the photopic extreme of
>> fully
>> light-adapted (m=1) to the scotopic extreme when fully dark-adapted
>> (m=0). Note
>> that the eye is far more sensitive to blue light in the dark, making
>> blue light
>> look brighter at low light levels. (Courtesy of Teresa Goodman, National
>> Physical Laboratory, UK)"
> 
> This look strange. Blue light cause your iris to contract, reducing the
> amount of light that enter the eye. It also cause saturation of the sick
> cells in your retina, killing night vision. At the same time, the eye is
> far more censible to light in the yellow region whitch don't cause
> saturation nor contraction of the iris.

BTW, this is exactly the point the article is raising: The eye is _not_
universally most sensitive to yellow light. Instead, the wavelength of
highest sensitivity depends on the total brightness, with the
sensitivity of daylight vision peaking at yellow, night vision peaking
at a blue-green ("blue-ish") hue, and "mixed" vision (which appears to
be the case applicable for night-time traffic) peaking somewhere in between.

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