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Xem tất cả trên WikipediaMagnetism - Wikipedia
https://en.wikipedia.org/wiki/MagnetismMagnetism is a class of physical attributes that are mediated by magnetic fields. Electric currents and the magnetic moments of elementary particles give rise to a magnetic field, which acts on other currents and magnetic moments. Magnetism is one aspect of the combined phenomenon of
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Xem thêmMagnetism was first discovered in the ancient world, when people noticed that lodestones, naturally magnetized pieces of the mineral magnetite, could attract iron. The word magnet comes from the Greekterm μαγνῆτις λίθος
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Magnetism, at its root, arises from two sources:
1. Electric current.
2. Spin magnetic moments of elementary particles....
Xem thêmDiamagnetism
Diamagnetism appears in all materials and is the tendency of a material to oppose an applied magnetic field, and therefore, to be repelled by a magnetic...
Xem thêmAn electromagnet is a type of magnet in which the magnetic field is produced by an electric current. The magnetic field disappears when the
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Xem thêmIn a vacuum,
where μ0 is the vacuum permeability.
In a material,
The quantity μ0M is called magnetic polarization.
If the field H is small, the response of the magnetization M in a...
Xem thêmThe phenomenon of magnetism is "mediated" by the magnetic field. An electric current or magnetic dipole creates a magnetic field, and that field, in turn, imparts magnetic forces on other particles that are in the fields.
Maxwell's equations,...
Xem thêmAs a consequence of Einstein's theory of special relativity, electricity and magnetism are fundamentally interlinked. Both magnetism lacking
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Xem thêmVăn bản Wikipedia theo giấy phép CC-BY-SAMục này có hữu ích không?Cảm ơn! Cung cấp thêm phản hồiMagnetism - Simple English Wikipedia, the free encyclopedia
https://simple.wikipedia.org/wiki/Magnetism- Magnetism can be made by a permanent magnet, or by electricity in a wire. This is called an electromagnet. When magnets are put near magnetic objects, the magnet and the object are pulled toward each other. This is called magnetic attraction. Magnets can also repel (push away) other magnets. Most objects that are attracted to magnets have iron in them. This is ferromagn…
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Magnetism - Wikipedia
https://ro.wikipedia.org/wiki/MagnetismMagnetismul este unul dintre fenomenele care se manifestă prin forțe de atracție sau respingere între corpuri; forțele magnetice își au originea în mișcarea electronilor sau a altor particule cu sarcină electrică. Atunci când magnetismul este produs de sarcini electrice libere, de exemplu în curentul electric, în plasmă sau în fluxuri de particule încărcate electric, fenomenul se numește electromag…
Wikipedia · Nội dung trong CC-BY-SA giấy phépMagnet - Wikipedia
https://en.wikipedia.org/wiki/MagnetXem thêm trên en.wikipedia.orgAncient people learned about magnetism from lodestones (or magnetite) which are naturally magnetized pieces of iron ore. The word magnet was adopted in Middle English from Latin magnetum "lodestone", ultimately from Greek μαγνῆτις [λίθος] (magnētis [lithos]) meaning "[stone] from Magnesia", a place in Anatolia where lod…Magnetism – Wikipedia
https://sv.wikipedia.org/wiki/Magnetism- Ett magnetfält uppstår kring elektriska laddningar i relativ rörelse, vilket innebär en ömsesidig kraftverkan mellan laddningarna. Magnetism beskrivs fullständigt av Maxwells elektromagnetiska ekvationer ur vilka magnetfältet bestäms med hjälp av Biot-Savarts lag. Magnetiska krafter kan förklaras som en relativistisk effekt i samverkan med elektrostatiska kra…
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Magnetism – Vikipeedia
https://et.wikipedia.org/wiki/Magnetism- Magnetismil on kaks allikat: 1. Elektrivool ehk liikuvad elektrilaengud tekitavad magnetvälja (vaata Maxwelli võrrandeid). 2. Materjali osakeste spinn-impulsimoment ehk sisemine pöörlemishulk (lihtsustatult "spinn") erineb nullist. Igal aine osakesel on looduses mass, laengja teatav spinn. Et teatud materjalidel on omadus mingis kindlas suunas orienteeruda, märgati juba sadu aastaid ta…
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Magnetismus – Wikipedia
https://de.wikipedia.org/wiki/MagnetismusXem thêm trên de.wikipedia.orgUm die Erscheinungen des Magnetismus zu beschreiben, führte man den Begriff des Magnetfeldsein. Magnetfelder können verursacht werden durch 1. magnetische Materialien, etwa einen Dauermagneten, 2. elektrische Ströme, z. B. eine stromdurchflossene Spule, oder 3. zeitliche Änderung eines elektrischen Feld…Magnetisme - Wikipedia
https://nl.wikipedia.org/wiki/MagnetismeXem thêm trên nl.wikipedia.orgBij nadere beschouwing blijkt alle magnetisme in van nature magnetische of magnetiseerbare materialen, evenals elektromagnetisme, veroorzaakt te worden door bewegende elektrische ladingen.James Maxwell heeft, voortbouwend op onderzoek van onder anderen Nikola Tesla en later Michael Faraday, al in de nege…- Thời gian đọc ước tính: 8 phút
Magnet – Wikipedia
https://de.wikipedia.org/wiki/Magnet- Die Richtung und Stärke magnetischer Kräfte kann man durch Feldlinien anschaulich darstellen. Ein Magnet besitzt ein Magnetfeld, das durch seine Oberfläche hindurch auch in sein Inneres reicht. Die Oberflächenbereiche, die vom überwiegenden Teil des Magnetfeldes durchsetzt werden, heißen die Pole des Magneten; nach gängiger Konvention treten die Feldlinien am „Südp…
Magnet - Wikipedia
https://ro.wikipedia.org/wiki/MagnetCâmpul magnetic este o mărime vectorială (deci oricărui punct asociază un vector →) a cărui valoare are unitatea de măsură Tesla.Orientarea (direcția și sensul) poate fi determinată cu ajutorul acului magnetic. Momentul magnetic. Momentul magnetic este un vector, notat →, care caracterizează câmpul magnetic.Pentru un magnet în formă de bară, → este îndreptat, pentru ...
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