| 释义 |
WordReference Random House Unabridged Dictionary of American English © 2024spec•tro•he•li•o•graph (spek′trō hē′lē ə graf′, -gräf′),USA pronunciation n. - an apparatus for making photographs of the sun with a monochromatic light to show the details of the sun's surface and surroundings as they would appear if the sun emitted only that light.
- 1890–95; spectro- + heliograph
Collins Concise English Dictionary © HarperCollins Publishers:: spectroheliograph /ˌspɛktrəʊˈhiːlɪəˌɡrɑːf -ˌɡræf/ n - an instrument used to obtain an image of the sun in light of a particular wavelength, such as calcium or hydrogen, to show the distribution of the element over the surface and in the solar atmosphere. The image obtained is a spectroheliogram
Etymology: 19th Century: from spectro- + helio- + -graphˌspectroˌhelioˈgraphic adj |