搜尋結果
heliograph
- IPA[ˈhēlēōˌɡraf]
美式
- a signaling device by which sunlight is reflected in flashes from a movable mirror.;a message sent by reflecting flashes of sunlight from a mirror; a heliogram.
- send (a message) by heliograph;take a heliographic photograph of
verb: heliograph, 3rd person present: heliographs, gerund or present participle: heliographing, past tense: heliographed, past participle: heliographed
noun: heliograph, plural noun: heliographs
- 釋義
名詞
- 1. a signaling device by which sunlight is reflected in flashes from a movable mirror.
- ▪ a message sent by reflecting flashes of sunlight from a mirror; a heliogram.
- 2. a telescopic apparatus for photographing the sun.
- 3. historical a type of early photographic engraving made using a sensitized silver plate and an asphalt or bitumen varnish.
動詞
- 1. send (a message) by heliograph the glasses seemed to be heliographing a warning
- 2. historical take a heliographic photograph of he could only heliograph static subjects in very intense light