showstack / glossary / additive-mixing
Additive colour mixing 加色混合
Mixing by adding light. Each emitter contributes its own spectrum and the surface receives the sum, so you start at black and every source you bring up adds. Red plus green is yellow. This is what multi-emitter LED fixtures do, and what any two lamps pointed at the same wall do.
中文
以疊加光線來混色。每個發光體貢獻自己的光譜，表面接收到的是總和，因此起點是黑，每加一盞燈就加一分光。紅加綠得黃。多晶片 LED 燈具即以此方式混色，兩盞燈打在同一面牆上亦然。
Regional usage
| Where | Term | Note |
|---|---|---|
| UK / US | Additive mixing | |
| HK / TW | 加色混合 / 加法混色 |
Easy to get wrong
The primaries differ from paint's. Additive primaries are red, green and blue; subtractive are cyan, magenta and yellow. Anyone taught colour with paint expects red and green to make brown.
Next to this
Subtractive colour mixing減色混合Mixing by removing light. One white source passes through layers that each remove part of the spectrum, and r…Metamerism同色異譜Two different spectra that look identical to a human observer. The eye has three cone types, so it collapses …
Sources
- CIE colorimetry and colour mixing fundamentals — International Commission on Illumination primary
Understand the mechanism
Something wrong, or missing?
Every entry here is maintained by people who run shows.
Edit this entry on GitHub — one file, editable in your browser, and your handle goes on it permanently.