Fotometri
/id/Source Language: The language or dialect this term originates from (ID).Definition & Context
NounNoun
A word that functions as the name of a specific object or set of objects, such as living creatures, places, actions, qualities, states of existence, or ideas.
The branch of optical science and technique for measuring light intensity based on human visual perception, or a quantitative method in astronomy used to determine the brightness and magnitude of celestial objects through specific passband filters on light-sensing instruments.
Synonyms & Variants
ilmu ukur cahaya
Descriptive term for the field of study concerned with measuring light intensity.
pengukuran cahaya
Descriptive equivalent in Indonesian
pengukuran magnitudo
Technical term in astronomy for determining the brightness level of celestial objects.
radiometri
Broader term covering all wavelengths
spektroskopi
Companion technique in starlight analysis
Usage Notes or Etymology
The term originates from the Greek roots phos meaning “light” and metron meaning “to measure”. Historically, the discipline advanced significantly in the 18th century when Pierre Bouguer formulated principles for comparing light intensities via human visual observation. In formal contexts, the usage of Fotometri shifted from general optical measurement to a technical standard in astronomy and civil engineering. It is used specifically to distinguish pure physical power (radiometry) from light as perceived by human visual systems, making it crucial in discussions concerning luminous efficiency or the classification of stellar magnitudes.
Real-world Usage
Data fotometri ini sangat penting untuk menentukan magnitudo absolut bintang tersebut secara akurat.
English Translation
Representative of real-world usage and contextual accuracy.