Things that have bothered you for a long time.

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Yellow Fang

Yellow Fang

Legendary Member
Location
Reading
Why does the Battle of Britain Flight include a Lancaster? (and the Hurricanes and most the Spitfires are the wrong mark)
 
Also: if the primary colours on TV screens, computer monitors and human retinas are red, blue and green, which are they red blue and yellow in paint? That is, if you mix red and green paint, why don't you get yellow?
Additive and subtractive, innit?
https://www.rgbworld.com/color.html
The additive color system involves light emitted directly from a source, before an object reflects the light. The additive reproduction process mixes various amounts of red, green and blue light to produce other colors. Combining one of these additive primary colors with another produces the additive secondary colors cyan, magenta, yellow. Combining all three primary colors produces white.
Television and computer monitors create color using the primary colors of light. Each pixel on a monitor screen starts out as black. When the red, green and blue phosphors of a pixel are illuminated simultaneously, that pixel becomes white. This phenomenon is called additive color.
Photographs, magazines and other objects of nature such as an apple; create color by subtracting or absorbing certain wavelengths of color while reflecting other wavelengths back to the viewer. This phenomenon is called subtractive color. [...]
The subtractive color system involves colorants and reflected light. Subtractive color starts with an object (often a substrate such as paper or canvas) that reflects light and uses colorants (such as pigments or dyes) to subtract portions of the white light illuminating an object to produce other colors. If an object reflects all the white light back to the viewer, it appears white. If an object absorbs (subtracts) all the light illuminating it, no light is reflected back to the viewer and it appears black. It is the subtractive process that allows everyday objects around us to show color.
Color paintings, color photography and all color printing processes use the subtractive process to reproduce color. In these cases, the reflective substrate is canvas (paintings) or paper (photographs, prints), which is usually white.
 
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Yellow Fang

Yellow Fang

Legendary Member
Location
Reading
[QUOTE 5308970, member: 10119"]Additive and subtractive, innit?
https://www.rgbworld.com/color.html[/QUOTE]

That's that explained, I suppose. Printer colour cartridges are magenta, cyan and yellow. I'd have called magenta, purple, and cyan, light blue, growing up. The first time I came across the colours magenta and cyan was when playing on dad's Spectrum ZX. We definitely mixed red and yellow paint to make green at primary school.
 

Lullabelle

Banana
Location
Midlands UK
How footballers get away with ridiculous hairstyles.
 
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