# magnetohydrodynamics > study of the interaction of electrically conducting fluids with magnetic fields **Wikidata**: [Q2549249](https://www.wikidata.org/wiki/Q2549249) **Wikipedia**: [English](https://en.wikipedia.org/wiki/Magnetohydrodynamics) **Source**: https://4ort.xyz/entity/magnetohydrodynamics ## Summary Magnetohydrodynamics (MHD) is the study of the interaction of electrically conducting fluids with magnetic fields. It is a scientific field that sits within fluid mechanics and hydrodynamics and is closely related to dynamo theory. ## Key Facts - Magnetohydrodynamics (alias: MHD) studies the interaction of electrically conducting fluids with magnetic fields. - Wikidata description: "study of the interaction of electrically conducting fluids with magnetic fields." - Wikipedia title: Magnetohydrodynamics. - Sitlink count (Wikidata/Wikipedia interlanguage links): 51. - Magnetohydrodynamics is part of the parent field fluid mechanics. - Fluid mechanics is described as a branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them, and is a branch of continuum mechanics (fluid mechanics sitelink_count: 85). - Magnetohydrodynamics is also part of hydrodynamics (study of fluids in motion) (hydrodynamics sitelink_count: 37). - Magnetohydrodynamics is related to dynamo theory (mechanism by which a celestial body generates a magnetic field) (dynamo theory sitelink_count: 25). - Magnetohydrodynamics is categorized as an academic discipline (academic field of study or profession). - Notable related person: Subrata Roy (India-born American inventor, educator, and scientist) — occupations listed: , , , ; citizenship: Q30; sitelink_count: 6. - Notable related person: Herman Branover (Russian–Israeli physicist, born 1931) — occupations listed: , , , ; citizenship: , , ; sitelink_count: 6. ## FAQs Q: What does magnetohydrodynamics study? A: Magnetohydrodynamics studies the interaction between electrically conducting fluids and magnetic fields; that is the core definition and scope. Q: How is MHD classified within the sciences? A: MHD is an academic discipline and is treated as part of fluid mechanics and hydrodynamics; fluid mechanics itself is a branch of physics and of continuum mechanics. Q: Which related scientific theory is connected to magnetohydrodynamics? A: Dynamo theory, described as the mechanism by which a celestial body generates a magnetic field, is listed as a related field. Q: What are common short names or aliases for magnetohydrodynamics? A: The common alias is "MHD." The Wikipedia article title is "Magnetohydrodynamics." Q: Where can I find more cross-language resources or links for MHD? A: The Wikidata/Wikipedia sitelink count for Magnetohydrodynamics is 51, indicating its presence across many language editions and linked resources. Q: Who are some people associated with the field in the provided data? A: The provided related persons are Subrata Roy (occupations and U.S. citizenship coded as Q-values; sitelink_count 6) and Herman Branover (occupations and multiple citizenship codes; sitelink_count 6). ## Why It Matters Magnetohydrodynamics matters because it describes the fundamental interactions between magnetic fields and electrically conducting fluids, placing it at the intersection of fluid mechanics and electromagnetic phenomena. As a discipline nested under fluid mechanics and hydrodynamics, MHD connects the mechanics of liquids, gases, and plasmas with magnetic forces and fields; this cross-disciplinary position links it to broader topics such as continuum mechanics and theories about magnetic field generation (dynamo theory). Its identification as an academic discipline underscores its role in organized scientific study and education. ## Notable For - Being explicitly defined as the study of interactions between electrically conducting fluids and magnetic fields. - Having the standard abbreviation "MHD." - Occupying a cross-disciplinary position as part of fluid mechanics and hydrodynamics. - Being directly related to dynamo theory, which addresses magnetic field generation in celestial bodies. - Presence across many language and reference links (sitelink_count: 51). - Association with named individuals in the provided data: Subrata Roy and Herman Branover (each with sitelink_count: 6 in the provided metadata). ## Body ### Overview - Magnetohydrodynamics (MHD) is defined in the provided sources as the study of the interaction of electrically conducting fluids with magnetic fields. - The field is named in the provided material with the Wikipedia title "Magnetohydrodynamics" and the alias "MHD." - The canonical one-line description from the source (Wikidata description) is: "study of the interaction of electrically conducting fluids with magnetic fields." ### Classification and Parent Fields - Magnetohydrodynamics is categorized under several parent or part-of fields in the provided data: - Fluid mechanics — described as a branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them; additionally described as a branch of continuum mechanics. This parent field has a sitelink_count of 85. - Hydrodynamics — described as the study of fluids in motion; this parent field has a sitelink_count of 37. - Dynamo theory — listed as a related parent field, described as the mechanism by which a celestial body generates a magnetic field; dynamo theory has a sitelink_count of 25. - The broader label applied to MHD in the provided data is "academic discipline," indicating its status as a field of organized study or a profession (academic discipline sitelink_count: 50). ### Scope and Core Concept - The central focus is explicitly on electrically conducting fluids interacting with magnetic fields. - The parent descriptions connect MHD to the mechanics of fluids, including liquids, gases, and plasmas, and to the study of fluids in motion. ### Related People (as provided) - Subrata Roy — described in the provided data as an India-born American inventor, educator, and scientist. The provided metadata lists occupations as , , , and citizenship as Q30. The entry for Subrata Roy has a sitelink_count of 6 in the provided data. - Herman Branover — described in the provided data as a Russian–Israeli physicist, born 1931. The provided metadata lists occupations as , , , and citizenships as , , . Herman Branover's provided sitelink_count is 6. ### Metadata and Identifiers - Alias: MHD. - Wikidata/Wikipedia presence indicator: sitelink_count = 51. - Wikipedia article title provided: Magnetohydrodynamics. - Wikidata short description provided: "study of the interaction of electrically conducting fluids with magnetic fields." ### Relationships and Contextual Links - Magnetohydrodynamics is related to and situated within multiple domains of physics and engineering as evidenced by its listed parents: fluid mechanics, hydrodynamics, and dynamo theory. - The provided data explicitly connects MHD to the study of plasmas (mentioned within the fluid mechanics parent description), linking it conceptually to media that can be electrically conducting. ### Presence and Reach - The presence of a sitelink_count of 51 indicates that the topic has entries or links in a substantial number of language editions or connected resources in the Wikidata/Wikipedia ecosystem, per the provided metadata. - The provided parent and related entries (fluid mechanics sitelink_count 85, hydrodynamics 37, dynamo theory 25) indicate related topics also have substantial cross-language or cross-resource presence. ### Related Categories and Labels - Academic discipline — the material explicitly treats magnetohydrodynamics as belonging to academic fields of study or professions. - Continuum mechanics — via the parent fluid mechanics description, MHD is connected to continuum mechanics concepts. ### Notes on Source Data - All statements and classifications in this entry are derived from the supplied source material and metadata, including provided descriptions, parent relationships, related entities, aliases, and sitelink counts. ## References 1. Nuovo soggettario 2. Freebase Data Dumps. 2013 3. [Nuovo soggettario](https://thes.bncf.firenze.sbn.it/termine.php?id=21739) 4. [Registros de autoridad de "Materia" de la Biblioteca Nacional de España. Spain open data portal](https://www.bne.es/media/datosgob/catalogo-autoridades/materia/materia-UTF8.zip) 5. Integrated Authority File 6. Quora 7. National Library of Israel 8. KBpedia 9. GF WordNet 10. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)