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Absolute values of fading will depend on light intensity. Relative values of fading, comparing the sample with the standard blue test strip, will depend less on intensity. For example, if a pigment is rated as "BW5" it can be expected to fade to the same degree as strip number 5 on a bluewool test card, for any specific light exposure.
In grey scale the lightfastness is rated between 1–5. 1 being very poor and 5 being excellent lightfastness. [1] [2] [10] On ASTM scale the lightfastness is rated between I-V. I is excellent lightfastness and it corresponds to ratings 7–8 on Blue Wool Scale. V is very poor lightfastness and it corresponds to Blue Wool scale rating 1. [10]
The temperature of the ideal emitter that matches the color most closely is defined as the color temperature of the original visible light source. The color temperature scale describes only the color of light emitted by a light source, which may actually be at a different (and often much lower) temperature. [1] [2]
Light blue TCS07 2,5 P 6/8 ... is defined as having a CRI of 100. This is why incandescent lamps have that rating, as ... Normalize the scale from 0 to 100 ...
The use of flashing lights and sirens is colloquially known as blues and twos, which refers to the blue lights and the two-tone siren once commonplace (although most sirens now use a range of tones). In the UK, only blue lights are used to denote emergency vehicles (although other colours may be used as sidelights, stop indicators, etc.).
Its rating scale is a little different, in that the highest score offered is A” and the lowest an L, with A’, A, S, M in the middle. Why are insurance company ratings important?
It was an incredible year in sports, which means 2024 saw a plethora of iconic images from around the world that captured the biggest moments from the Olympics, the Super Bowl and much more. Check ...
when it is half moon (first/last quarter) in a dark location the sky appears like this, but with the difference that the sky appears dark blue; limiting magnitude with 12.5" reflector is 15; 6 Bright suburban sky 5.1–5.5 18.5–19.25 the zodiacal light is invisible; light pollution makes the sky within 35° of the horizon glow grayish white