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