What does spectroheliograph mean?
Definitions for spectroheliograph
ˌspɛk troʊˈhi li əˌgræf, -ˌgrɑfspec·tro·he·li·o·graph
This dictionary definitions page includes all the possible meanings, example usage and translations of the word spectroheliograph.
Wiktionary
spectroheliographnoun
an instrument that produced monochromatic photographs of the sun using light at a selected wavelength
Wikidata
Spectroheliograph
The spectroheliograph is an instrument used in astronomy which captures a photographic image of the Sun at a single wavelength of light, a monochromatic image. The wavelength is usually chosen to coincide with an spectral wavelength of one of the chemical elements present in the Sun. It was developed independently by George Ellery Hale and Henri-Alexandre Deslandres in 1890 and further refined in 1932 by Robert R. McMath to take motion pictures. The instrument comprises a prism or diffraction grating and a narrow slit that passes a single wavelength. The light is focused onto a photographic medium and the slit is moved across the disk of the Sun to form a complete image. It is now possible to make a filter that transmits a narrow band of wavelengths which produces a similar image, but spectroheliographs remain in use.
Numerology
Chaldean Numerology
The numerical value of spectroheliograph in Chaldean Numerology is: 9
Pythagorean Numerology
The numerical value of spectroheliograph in Pythagorean Numerology is: 6
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"spectroheliograph." Definitions.net. STANDS4 LLC, 2024. Web. 24 Apr. 2024. <https://www.definitions.net/definition/spectroheliograph>.
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