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