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Afocal
| Glossary Of Laser Terminology |
Literally, "without a focal length"; an optical system with its object and image point at infinity.
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Ground state, английский
Lowest energy level of an atom or molecule.
Visible radiation, английский
Light - electromagnetic radiation which can be detected by the human eye. it is commonly used to describe wavelengths which lie in the range between 400 nm and 700 nm. the peak of the human spectral response is about 555 nm.
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