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