| 单词 | photochronograph |
| 释义 | photochronograph —photochronography /foh'toh kreuh nog"reuh fee/, n. /foh'teuh kron"euh graf', -grahf'/, n. 1. a device formerly used for taking a series of instantaneous photographs of a rapidly moving object. 2. a picture taken by such a device. 3. a chronograph in which the tracing or record is made by a pencil of light on a sensitized surface. 4. an instrument for measuring small intervals of time by the photographic trace of a pencil of light. [1885-90; PHOTO- + CHRONOGRAPH] |
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