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