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