Solid-angle measurer, goniometer, goniospectrometer or photometer head, an instrument for measuring the solid angle or the angle-dependent distribution of physical quantities, usually light (luminous intensity), by Ernst Heinrich Weber (1795–1878), Illustration, reproduction of a 19th-century original. Authentic, file restored for optimal use, exact date of the original unknown, historical
Caption

Solid-angle measurer, goniometer, goniospectrometer or photometer head, an instrument for measuring the solid angle or the angle-dependent distribution of physical quantities, usually light (luminous intensity), by Ernst Heinrich Weber (1795–1878), Illustration, reproduction of a 19th-century original. Authentic, file restored for optimal use, exact date of the original unknown, historical

Credit line

Photo12/ImageBROKER/Sunny Celeste

Reference

BRK26J27_308

Model release

No

Property release

No

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Royalty free

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