Examlex
For the distribution in the following table, the 80th percentile is X = 24.
Photographic Plates
Flat sheets of metal or glass coated with a photosensitive chemical used to capture images in traditional photography.
Radioactive Materials
Substances that emit radiation as a result of nuclear decay, used in a variety of applications but also associated with health risks.
Radioactivity
The process by which atoms emit energy in the form of particles or electromagnetic waves due to the decay of their unstable nuclei.
Phosphorescence
A type of photoluminescence related to fluorescence, but in which a material emits light for a longer period after the initial excitation energy is supplied.
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