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Bookmark or Share- Quantum electrodynamics - WikipediaIn particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and special relativity is achieved.
- Q.E.D. - WikipediaQ.E.D. or QED is an initialism of the Latin phrase quod erat demonstrandum, meaning "that which was to be demonstrated". Literally it states "what was to be shown".
- QED Definition & Meaning | Britannica DictionaryQED is an abbreviation of the Latin phrase “quod erat demonstrandum,” /ˌkwɑːdˈeɚˌɑːtˌdɛmənˈstrændəm/ which means “which was to be demonstrated.”
- QED | English meaning - Cambridge DictionaryQED definition: 1. abbreviation for the Latin phrase "quod erat demonstrandum": written or said after an argument…. Learn more.
- Q.E.D. Meaning | Translations by Dictionary.comThe Latin quod erat demonstrandum literally means “what was to be demonstrated.”. It is actually a transliteration of a phrase ancient Greek mathematicians placed at the end of logical proofs—a kind of stamp that says “I proved what I set out to. Usage for the abbreviation Q.E.D. is found from the 17th century.
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