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| illuminant; source of illumination | |||
| primary source (in atomic absorption and atomic fluorescence spectroscopy) | |||
| light source (The element that is providing the light that illuminates a photographic subject) | |||
| light | |||
| source; optical emitter; optical transmitter | |||
| source oe light | |||
| luminous source | |||
| exposure source; light source; luminous source; optical source; source of light | |||
| Lichtquelle: 67 phrases in 12 subjects |
| Astronomy | 1 |
| Biology | 1 |
| Communications | 1 |
| Earth sciences | 2 |
| Electronics | 1 |
| Industry | 1 |
| Lighting other than cinema | 1 |
| Measuring instruments | 1 |
| Metallurgy | 1 |
| Microelectronics | 3 |
| Optics branch of physics | 50 |
| Physics | 4 |