QS81XXHY12
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31199608-QS81XXHY12
LED Panel Mount Indicators LED INDICATOR QS8 SNAP IN
the angle at which a display can be viewed with acceptable visual performance.
In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye.
LEDs produce different colors by using various materials which produce photons at different wavelengths.
affect how much visible light reaches people's eyes, how well people see other colors and how well they see contrasts.