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| numerical aperture | |||
| numeric aperture | |||
| numerical aperture (the product of the refractive index of the medium between the object and the lens and the sine of half the angle subtended by the lens diameter at the object) | |||
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| numerical aperture | |||
| numerische Apertur: 9 phrases in 5 subjects |
| Antennas and waveguides | 3 |
| Communications | 1 |
| Industry | 1 |
| Microelectronics | 1 |
| Optics branch of physics | 3 |