UV-B
Sunburn light wavelength
UV-B refers to a band of ultraviolet radiation with wavelengths between approximately 280 and 315 nanometers, positioned between the shorter UV-C and longer UV-A rays.
Most UV-B from the sun is absorbed by the ozone layer, but what reaches Earth's surface causes sunburn and contributes to skin cancer risk.
It also triggers vitamin D production in human skin, making limited exposure beneficial.
UV-B rays are strongest between 10 a.m. and 4 p.m.
UV-induced skin inflammation
- melanomaAggressive pigment-cell cancer
- erythemaCutaneous vascular flushing
- basal cell carcinomaEpidermal malignancy, rarely metastatic
- photoagingUV-caused skin deterioration
DNA damage · wrinkles · leathery skin · free radicals · sunscreen · SPF · protective clothing · sun hat
Atmospheric UV filter
- stratosphereSecond atmospheric layer up
- ozone depletionProtective atmospheric layer destruction
- ozone holeThinned protective layer
- CFCsOzone-depleting compounds, abbreviated
chlorofluorocarbons · atmosphere · ozone shield · hydrochlorofluorocarbons · halons
UV-burned corneas from reflection
- cataractsSteep falls or eye opacity
- sunglassesTinted eye protection
- gogglesSealed protective eyewear
- photophobiaAbnormal aversion to brightness
Healing through light exposure
- immunosuppressionReduced bodily defense activation
- carcinogenesisMalignant transformation process
- mutationsAlterations in genetic sequence
- bone healthCondition of bones
Injury to genetic material
- phytoplanktonPhotosynthetic aquatic drifters
- marine ecosystemsSaltwater biological communities
- chlorophyllLight-harvesting plant pigment
- crop damageHarm to cultivated plants
Billionths of meters
- solar spectrumSun's electromagnetic wavelength distribution
- electromagnetic radiationWave-propagating energy through space
- photonsDiscrete packets of radiance
- irradianceIncident power per area
sunburn
UV-induced skin inflammation
- melanomaAggressive pigment-cell cancer
- erythemaCutaneous vascular flushing
- basal cell carcinomaEpidermal malignancy, rarely metastatic
photoaging · DNA damage · wrinkles · leathery skin · free radicals · sunscreen · SPF · protective clothing · sun hat · tanning beds
ozone layer
Atmospheric UV filter
- stratosphereSecond atmospheric layer up
- ozone depletionProtective atmospheric layer destruction
- ozone holeThinned protective layer
CFCs · chlorofluorocarbons · atmosphere · ozone shield · hydrochlorofluorocarbons · halons
snow blindness
UV-burned corneas from reflection
- cataractsSteep falls or eye opacity
- sunglassesTinted eye protection
- gogglesSealed protective eyewear
phototherapy
Healing through light exposure
- immunosuppressionReduced bodily defense activation
- carcinogenesisMalignant transformation process
- mutationsAlterations in genetic sequence
DNA damage
Injury to genetic material
- phytoplanktonPhotosynthetic aquatic drifters
- marine ecosystemsSaltwater biological communities
- chlorophyllLight-harvesting plant pigment
nanometers
Billionths of meters
- solar spectrumSun's electromagnetic wavelength distribution
- electromagnetic radiationWave-propagating energy through space
- photonsDiscrete packets of radiance
- Electromagnetic Wavesvisible light, radio waves, infrared light, ultraviolet light, gamma rays
- rayos UV
- radiation
- Ozoneozone, ozone layer, ozone hole, ozone depletion, stratospheric ozone
- photobiologyphotoreceptor, photoreceptors, photosynthesis, phototropism, photoreception
UV-Binfrared
Heat-bearing electromagnetic waves
UV-A · visible light · radio waves · far-infrared · UV-C