Definitions from Wiktionary (selenium eye)
▸ noun: (astronomy, historical) A device consisting of a closeable ball of blackened wood surrounding a glass lens that focuses light onto a selenium cell attached to a galvanometer; used by astronomers to measure the light variations of a heavenly body.
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▸ noun: (astronomy, historical) A device consisting of a closeable ball of blackened wood surrounding a glass lens that focuses light onto a selenium cell attached to a galvanometer; used by astronomers to measure the light variations of a heavenly body.
Similar:
scioptic ball,
selenoscope,
solar microscope,
spectrohelioscope,
helioscope,
solar telescope,
spyglass,
gazing ball,
night glass,
telescope,
more...
Opposite:
▸ Words similar to selenium eye
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▸ Wikipedia articles (New!)
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