🌐EnglishEnglishPolskiРусскийEntityQ348294· pop 6· linked from 47 articlesQED vacuumlowest-energy stateAvailable in 6 languagesРусскийCatalanPolskisimpleUzbekvia Wikidata sitelinks · CC0ConnectionsPlanck constantEntitySchrödinger's catEntityCategoriesConcepts in physicsElectromagnetic radiationElectromagnetismEnergy (physics)Quantum electrodynamicsVacuum