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| yellow filter; minus-blue filter (filter that subtracts blue rays and passes green and red) | |||
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Gelbfiltern : 1 phrase in 1 subject |
| Optics branch of physics | 1 |
| |||
| yellow filter; minus-blue filter (filter that subtracts blue rays and passes green and red) | |||
|
Gelbfiltern : 1 phrase in 1 subject |
| Optics branch of physics | 1 |