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