The measurement of light intensity and properties using automated or self-operating equipment.
From Greek 'auto-' (self), 'photo-' (light), and 'metry' (measurement). This technical term emerged in 20th-century optical and chemical sciences.
Modern light meters and sensors use autophotometry principles—they automatically measure exactly how bright something is, which is crucial in photography, astronomy, and quality control in factories!
Complete word intelligence in one call. Free tier — 50 lookups/day.