File:Capacitor_schematic_with_dielectric.svg · Wikimedia Commons · See Wikimedia Commons
Also known as dielectric medium
thumb|A polarised dielectric material (orange), between two metal plates
A dielectric is a material that doesn't conduct electricity but can be polarized—meaning its electric charges shift slightly when placed in an electric field. Dielectrics are useful in devices like capacitors, where they're placed between metal plates to store electrical energy more effectively.
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Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).