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| chopper disc; chopper disk | |||
| reticle (patterned chopping disk, which consists of opaque and transparent sections; if breaks up the incoming radiation and converts the incident d.c. signal into an a.c. signal; the reticle generates error signals and discriminates between large background sources and smaller target signals); chopper (disk; provides modulated light); chopping disk (wheel); rotating chopper wheel; rotating disk light chopper; slotted disk chopper | |||
| Zerhackerscheibe: 1 phrase in 1 subject |
| Optics branch of physics | 1 |