[lojban] mix: additive vs subtractive

[tijlan <jbotijlan@gmail.com>]

Colors are combined in two distinct ways: additive or subtractive.

http://en.wikipedia.org/wiki/Primary_color

The RGB model uses the additive primaries (e.g. computer displays),
while the CMYK model uses the subtractive primaries (e.g. printers).
The RGB mixing creates brighter colors, while the CMYK mixing results
in darker colors.

Fundamentally different modes of mixing. Which conjunctions will make
the distinction in tanru?

"lo xunre joi crino cu pelxu" may be true in RGB but not in CMYK; "lo
pelxu joi nukni cu xunre" may be true in CMYK but not in RGB.

The Venn diagrams for these color models seem to hint at sets as much
as masses -- the sort of "jo'e" (union) as well as "joi" (mixed mass).
But we can't really say that "xunre jo'e crino" is additive and "pelxu
jo'enai nukni" subtractive in the particular sense of physical color
combination, can we?


mu'o

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