Definition of spectroheliograph in English:


Syllabification: spec·tro·he·li·o·graph
Pronunciation: /ˌspektrōˈhēlēəˌgraf


  • An instrument for taking photographs of the sun in light of one wavelength only.
    More example sentences
    • He invented the spectroheliograph in 1892, a device that allowed him to view the sun in individual wavelengths of light.
    • Hale also gained prominence as an astronomer with his invention of the spectroheliograph and the discovery of magnetic fields in sunspots.
    • The most important advantages of this form of spectroheliograph is the large field photographed.

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a powerful whirlpool in the sea