Electromagnetic radiation is classified as ionizing or non-ionizing based on photon energy. Field strength is measured in volts per meter (V/m)
Cuvette is a transparent container with straight sides and circular/square cross-section. Used for spectroscopic measurements of samples with light beam. Can hold from 70 microliters to 2.5 milliliters. Most have two transparent sides for light passage
cSCC is one of three main types of skin cancer alongside basal-cell and melanoma. Typically presents as hard lump with scaly surface or ulcer. More likely to spread than basal-cell carcinoma. Usually occurs on sun-exposed areas like face, ears, neck, hands
UV-B lamps emit light between 290-320 nanometers, known as the biological spectrum. UV-B light does not significantly tan skin compared to UV-A lamps
Dark skin evolved 1.2 million years ago in early hominids. Dark skin evolved to protect against UV radiation and folate depletion. All modern humans were dark-skinned by the time Homo sapiens evolved
UV radiation spans 10-400 nanometers, present in sunlight and produced by various sources. Sunlight contains about 10% UV, with atmosphere blocking 77% at zenith. UVB radiation is responsible for vitamin D production in humans