photic
Pertaining to illumination
Photic means relating to light, especially in scientific contexts.
The photic zone of a body of water is the upper layer where sunlight penetrates enough for photosynthesis.
In medicine, photic stimulation uses flashing lights to trigger responses, as in testing for photosensitive epilepsy.
Cell responding to light
- chlorophyllLight-harvesting plant pigment
- chloroplastLight-harvesting cell structure
- photoperiodDuration of daily light
- circadianDaily biological cycle
retina · rod cell · cone cell · phytoplankton · bioluminescence
Degree of light emitted
- radianceGlowing luminous quality
- luminosityIntrinsic brightness of source
- irradianceIncident power per area
- illuminationProvision of light
beam · glow · flash · glare · shine · gleam · shimmer · sparkle
Wave bending between media
- lensLight-focusing curved glass
- prismLight-splitting optical element
- corneaEye's clear outer dome
- pupilLearner or eye opening
iris · optic nerve · spectroscopy · photoelectric · photodiode · photovoltaic · fiber optic · photodetector
Abnormal aversion to brightness
- photosensitivityReactivity to radiant energy
- photodermatitisSkin inflammation from light
- light therapyTreatment using bright lamps
- UV exposureContact with ultraviolet light
photoreceptor
Cell responding to light
- chlorophyllLight-harvesting plant pigment
- chloroplastLight-harvesting cell structure
- photoperiodDuration of daily light
circadian · retina · rod cell · cone cell · phytoplankton · bioluminescence
brightness
Degree of light emitted
- radianceGlowing luminous quality
- luminosityIntrinsic brightness of source
- irradianceIncident power per area
illumination · beam · glow · flash · glare · shine · gleam · shimmer · sparkle · flare
refraction
Wave bending between media
pupil · iris · optic nerve · spectroscopy · photoelectric · photodiode · photovoltaic · fiber optic · photodetector
photophobia
Abnormal aversion to brightness
- photosensitivityReactivity to radiant energy
- photodermatitisSkin inflammation from light
- light therapyTreatment using bright lamps
exposure
State of being unprotected
flash · darkroom · developer · ISO · f-stop · shutter · overexposure · underexposure
- family photoImage of relatives together
- photo albumBound collection of snapshots
- photo IDImage-bearing identity document
- group photoPicture of multiple people
- photo boothEnclosed self-portrait station
- baby photoImage of a newborn
photo, photograph, photocopy, photographer, photography, photographs, photographic, photographing, photogenic