Examlex
In a ring topology, one station transmits signals, which travel in both directions along a single transmission segment.
Chemiluminescence
The emission of light (luminescence) as a result of a chemical reaction without the need for external light sources.
Mineral Sample
A physical piece of a naturally occurring solid substance with a defined chemical composition and crystalline structure.
Phosphorescence
A type of photoluminescence where a substance absorbs photons and re-emits them, resulting in a glow after the excitation source is removed.
Radioactivity
The spontaneous emission of particles or radiation from the nucleus of an unstable atom as it becomes more stable.
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