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Meaning of photoheliometer | Babel Free

Noun CEFR C2

Definitions

A double-lens instrument for measuring slight variations of the Sun's diameter by photography, based on the common chord of two overlapping images.

historical

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

photohemolysis photoheterotroph photoheterotrophy photohole photoholic photohomolysis

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