photometer
/fou'tɔmitə/
Definition
- Noun:
- A scientific instrument for measuring light intensity: A photometer is a device used to measure the intensity of light, often by comparing it to a known standard source. It is a key tool in photography, physics, and astronomy.
- Photographic equipment for measuring light: In photography, a photometer is a type of light meter used to determine the correct exposure settings by measuring the brightness of the scene.
Usage Examples
- Noun:
- The astronomer used a photometer to measure the brightness of the distant star.
- For accurate exposure, the photographer relied on a handheld photometer.
Advanced Usage
- "Photometric measurements": Refers to the process or results of measuring light using a photometer.
- The lab's report was based on precise photometric measurements.
Variants and Related Words
- Photometry (n): The science of measuring the intensity of light.
- His research is in the field of photometry.
- Photometric (adj): Relating to the measurement of light.
- The study presented a detailed photometric analysis.
Synonyms
- Light meter: A common synonym, especially in photography.
- Exposure meter: Specifically refers to a photometer used to determine photographic exposure.
Related Terms (Not Phrasal Verbs)
- Spectrophotometer: A more complex instrument that measures light intensity as a function of wavelength.
- Lux meter: A type of photometer that measures illuminance (light falling on a surface).
Noun
-
photographic equipment that measures the intensity of light
-
measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
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