selenium eye
selenium eye · selenium eyes
A device consisting of a closeable ball of blackened wood surrounding a glass lens…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.
Meaning
1 senses(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.
Forms
plural: selenium eyes| Singular | selenium eye |
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regular