Meaning of selenium eye | Babel Free
Definitions
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.
historical
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.