photoheliometer

English

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

Etymology

Affix from English meter (measuring device, measure).

Origin

English

meter

Gloss

measuring device, measure

Concept
Semantic Field

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Ontological Category

Action/Process

Emoji
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Distribution of cognates by language

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Cognates and derived terms