FAQs About the word photoheliometer

פוטוהליומטר

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

No synonyms found.

No antonyms found.

photoheliograph => פוטוהליוגרף, photogravure => צילום, photography => צילום, photographone => פוטוגרפון, photographometer => מד אור,