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