Made the first measurement of the Sun's apparent magnitude, using a particular "telescope / photometer" he designed
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← Johann Karl Friedrich Zöllner timeline
Made the first measurement of the Sun's apparent magnitude, using a particular "telescope / photometer" he designed
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-24 from Wikipedia. The archived copy is preserved so this citation survives link rot.