| 释义 |
Definition of heliograph in English: heliographnoun ˈhiːlɪə(ʊ)ɡrɑːfˈhiliəˌɡræf 1A signalling device by which sunlight is reflected in flashes from a movable mirror. 日光反射信号器 Example sentencesExamples - Later, runners, telegraph, semaphore, heliograph and line were used to communicate.
- A heliograph was a communications system consisting of two mirrors on a tripod used to flash signals with sunlight.
- Although visual signaling - wigwag, sun-powered heliograph, and observation balloons - remained important to the U.S. military, the Spanish-American War found commercial and military telegraph enjoying extensive use.
- When we all got back to camp, our General communicated by heliograph from a distant mountain top with his superiors.
- Organised divers always carry some means of signalling their position at the surface, whether it be air-horn or flag, flare or heliograph, or combinations of two or more.
- 1.1 A message sent by heliograph; a heliogram.
日光反射信号
2A telescopic apparatus for photographing the sun. （拍摄太阳用的）（套筒式）太阳照相仪 3historical A type of early photographic engraving made using a sensitized silver plate and an asphalt or bitumen varnish. 〈史〉日光胶版 Example sentencesExamples - The heliograph, ‘View From the Window,’ will be on view at the Ransom Galleries in Austin, Texas.
- The researchers used infrared spectrometry to analyze the heliograph's bitumen layer, too.
- An earlier version of the heliograph known as the heliotrope was used during the American civil war.
verbˈhiːlɪə(ʊ)ɡrɑːfˈhiliəˌɡræf [with object]1Send (a message) by heliograph. 〈旧〉用日光反射信号器发送（信号） the glasses seemed to be heliographing a warning Example sentencesExamples - The besieged soldiers, using shaving mirrors, heliographed messages to their comrades based at Fort Pearson near the mouth of the river.
- In that small boat was the man to whom the signal had been heliographed.
- To continue with my trip, the remainder of the summer was spent in patrolling, keeping weather reports, heliographing and reporting fires.
- Many in your Lordships’ House will be familiar with the story told in James and Jan Morris's great imperial trilogy, of the outpost in Sudan which heliographed to Khartoum.
- Garfield, just over the shoulder of Bond, was another, and it seemed as if the two were heliographing one to another from golden mirrors.
2historical Take a heliographic photograph of. 〈旧〉用太阳照相仪拍摄 he could only heliograph static subjects in very intense light
Derivativesadjective ˌhiːlɪə(ʊ)ˈɡrafɪkˌhiliəˈɡræfɪk Flag, semaphore, and electrical or heliographic Morse signalling were all susceptible to interception by the enemy and thus dependent on codes and ciphers. Example sentencesExamples - Three methods to determine the heliographic latitude and longitude of sunspot groups are described below.
noun hiːlɪˈɒɡrəfiˌhiliˈɑɡrəfi And to this day, the discoveries of heliography continue to impact art, and art education. Example sentencesExamples - She has been using heliography in her artworks for over ten years.
- Bugles, flags, and heliography technology have advanced the means of control available to commanders.
- A unique solar application that Lea teaches is heliography or sun printing.
- Our efforts in heliography have created considerable interest including that of the Solar Energy Division of Arizona's Department of Commerce.
Definition of heliograph in US English: heliographnounˈhiliəˌɡræfˈhēlēəˌɡraf 1A signaling device by which sunlight is reflected in flashes from a movable mirror. 日光反射信号器 Example sentencesExamples - Although visual signaling - wigwag, sun-powered heliograph, and observation balloons - remained important to the U.S. military, the Spanish-American War found commercial and military telegraph enjoying extensive use.
- Later, runners, telegraph, semaphore, heliograph and line were used to communicate.
- When we all got back to camp, our General communicated by heliograph from a distant mountain top with his superiors.
- Organised divers always carry some means of signalling their position at the surface, whether it be air-horn or flag, flare or heliograph, or combinations of two or more.
- A heliograph was a communications system consisting of two mirrors on a tripod used to flash signals with sunlight.
- 1.1 A message sent by reflecting flashes of sunlight from a mirror; a heliogram.
2A telescopic apparatus for photographing the sun. （拍摄太阳用的）（套筒式）太阳照相仪 3historical A type of early photographic engraving made using a sensitized silver plate and an asphalt or bitumen varnish. 〈史〉日光胶版 Example sentencesExamples - The researchers used infrared spectrometry to analyze the heliograph's bitumen layer, too.
- The heliograph, ‘View From the Window,’ will be on view at the Ransom Galleries in Austin, Texas.
- An earlier version of the heliograph known as the heliotrope was used during the American civil war.
verbˈhiliəˌɡræfˈhēlēəˌɡraf [with object]1Send (a message) by heliograph. 〈旧〉用日光反射信号器发送（信号） the glasses seemed to be heliographing a warning Example sentencesExamples - In that small boat was the man to whom the signal had been heliographed.
- Garfield, just over the shoulder of Bond, was another, and it seemed as if the two were heliographing one to another from golden mirrors.
- The besieged soldiers, using shaving mirrors, heliographed messages to their comrades based at Fort Pearson near the mouth of the river.
- To continue with my trip, the remainder of the summer was spent in patrolling, keeping weather reports, heliographing and reporting fires.
- Many in your Lordships’ House will be familiar with the story told in James and Jan Morris's great imperial trilogy, of the outpost in Sudan which heliographed to Khartoum.
2historical Take a heliographic photograph of. 〈旧〉用太阳照相仪拍摄 he could only heliograph static subjects in very intense light
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