photochop en · VERB · etymology 1
Etymology
From photo- + chop.
Meanings
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(transitive) To convert, by chopping, a DC (or slowly varying AC) input signal into a higher frequency signal.
This d-c signal is then photochopped in a solid-state oscillation circuit and the resulting a-c signal amplified.
1963, Instrumentation Technology - Volume 10, Issues 1-6, page 15:Models 2030 and 2031 provided with photochopped voltage pulse and DC voltage signals, respectively.
1990, Narendra S. Goel, John M. Norman, Instrumentation for Studying Vegetation Canopies for Remote Sensing in Optical and Thermal Infrared Regions, →ISBN:For photochopped anemometers, external power is required to power a light beam that is chopped by a rotating slotted disk.
2012, Gerald Stanhill, Advances in Bioclimatology, →ISBN, page 17:
Forms
| Spelling | Features | Labels | Source |
|---|---|---|---|
| photochopping | Tense=Pres, VerbForm=Part | lexicographic | |
| photochops | Number=Sing, Person=3, Tense=Pres | lexicographic | |
| photochopped | Tense=Past, VerbForm=Part | lexicographic | |
| photochopped | Tense=Past | lexicographic |