optical scanner
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- multilongitudianl-mode laser
- optical deformation
- frequency summing
- Varotal lens
- astrospectrograph camera
- upper state relaxation
- optical harmonic generation
- filters
- time-averaged shadow-moire method
- infra-red beam folower
- holographic gratings
- geometrical focus
- diatomic roto
- mode pattern
- visible emissivity
- push out
- chronophotography
- metacrystalline
- intensifying screen
- optical head controllers,control ics/modules