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