photometers
Luminosity measuring devices
Photometers are instruments that measure light intensity or brightness.
The term covers devices ranging from simple light meters used in photography to sophisticated laboratory equipment measuring luminous flux, illuminance, or the optical properties of materials.
The photometers detected a slight dimming as the planet crossed in front of its star.
Intrinsic brightness of source
- brightnessDegree of light emitted
- illuminanceReceived light intensity
- luminanceLight per unit area
- radianceGlowing luminous quality
irradiance · candela · lumens · lux · flux · intensity · transmittance · absorbance
Radiant energy measuring device
- colorimeterDevice measuring color intensity
- photodiodeLight-to-current semiconductor
- thermopileSeries-connected temperature-sensing junctions
- photocellLight-sensitive electronic component
Light-focusing curved glass
- filterPorous separation device
- apertureAdjustable optical inlet
- prismLight-splitting optical element
- wavelengthSpatial repetition interval
bandpass · collimator · attenuator · slit
Science of celestial objects
- colorimetryMeasuring perceived hues precisely
- turbidityCloudiness from suspended particles
Degree of correctness
- sensitivityResponsiveness to stimuli
- resolutionFormal decision or determination
- repeatabilityCapacity for consistent duplication
- reproducibilityAbility to repeat findings
Implementing uniform technical specifications
- traceabilityVerifiable origin and path
- benchmarkingMeasuring against top performers
- verificationProving something accurate
- validationConfirming truth or accuracy
linearity · zeroing · baseline · responsivity
luminosity
Intrinsic brightness of source
- brightnessDegree of light emitted
- illuminanceReceived light intensity
- luminanceLight per unit area
radiance · irradiance · candela · lumens · lux · flux · intensity · transmittance · absorbance · reflectance
radiometer
Radiant energy measuring device
- colorimeterDevice measuring color intensity
- photodiodeLight-to-current semiconductor
- thermopileSeries-connected temperature-sensing junctions
lens
Light-focusing curved glass
wavelength · bandpass · collimator · attenuator · slit
astronomy
Science of celestial objects
- colorimetryMeasuring perceived hues precisely
- turbidityCloudiness from suspended particles
accuracy
Degree of correctness
- sensitivityResponsiveness to stimuli
- resolutionFormal decision or determination
- repeatabilityCapacity for consistent duplication
standardization
Implementing uniform technical specifications
- traceabilityVerifiable origin and path
- benchmarkingMeasuring against top performers
- verificationProving something accurate
validation · linearity · zeroing · baseline · responsivity
photometersthermometers
Heat-measuring instruments
barometers · seismometers · magnetometers · accelerometers · hygrometers