HomeServicesBlogDictionariesContactSpanish Course
← Back to search

Meaning of selenium eye | Babel Free

Noun CEFR B2

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.

See also

Learn this word in context

See selenium eye used in real conversations inside our free language course.

Start Free Course