Spectroheliograph Definition

spĕktrō-hēlē-ə-grăf
noun
An instrument used to make spectroheliograms.
American Heritage
An instrument acting like a filter, for photographing the sun using light from only one spectral line, usually from hydrogen (red) or calcium (violet)
Webster's New World

Other Word Forms of Spectroheliograph

Noun

Singular:
spectroheliograph
Plural:
spectroheliographs

Origin of Spectroheliograph

Spectroheliograph Sentence Examples

  • The Five-foot Spectroheliograph of the Mount Wilson Solar Observatory (camera lens, camera slit and plate carrier in section).

  • It is evident that by the use of a spectroheliograph of sufficiently high dispersion, photographs may be taken of vapours in the sun represented by lines narrower than those of calcium and hydrogen.

  • Such work has been in progress both at Mount Wilson and at Meudon, and the erection of a spectroheliograph of 75 ft.

  • The calcium flocculi, on account of the brilliant reversals of the H and K lines to which they give rise, and the protection to the plate afforded by the diffuse dark bands in which these bright lines occur, are easily photographed with a spectroheliograph of low dispersion.

  • A spectroheliograph which gives excellent results with the lines of calcium, hydrogen and iron is shown in the figure.

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Words Starting With

SSPSPE

Words Ending With

HPHAPH

Unscrambles

spectroheliograph

Words Starting With S and Ending With H

Starts With S & Ends With HStarts With SP & Ends With HStarts With S & Ends With PH

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