- Magnetic polarity refers to the concept in physics and electromagnetism where opposite poles attract (north-south), while like poles repel (north-north or south-south)1. All magnets have two poles: the "north" and "south" poles, where lines of magnetic flux enter one pole and emerge from the other2.Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.Magnetic polarity - a concept in physics and electromagnetism applicable to magnetic field, as produced by electric current and spin magnetic moment. Opposite poles attract (north-south), like poles repel (north-north, or south-south)www.e-magnetica.pl/doku.php/magnetic_polarityAll magnets have two poles, where lines of magnetic flux enter one pole and emerge from the other pole. By analogy with Earth's magnetic field, these are called the magnet's "north" and "south" poles.en.wikipedia.org/wiki/North_magnetic_pole
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See all on WikipediaMagnet - Wikipedia
A magnet is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, steel, nickel, cobalt, etc. and attracts or repels other magnets. A permanent magnet is an … See more
Ancient people learned about magnetism from lodestones (or magnetite) which are naturally magnetized pieces of iron ore. The word magnet was adopted in Middle English See more
Because human tissues have a very low level of susceptibility to static magnetic fields, there is little mainstream scientific evidence showing a health effect associated with … See more
Ferromagnetic materials can be magnetized in the following ways:
• Heating the object higher than its Curie temperature, … See moreMagnetic metallic elements
Many materials have unpaired electron spins, and the majority of these materials are paramagnetic. When the spins interact with each other in such a way that the spins align spontaneously, the materials are called See moreMagnetic field
The magnetic flux density (also called magnetic B field or just magnetic field, usually denoted by B) is a vector field. The magnetic B field See more• Magnetic recording media: VHS tapes contain a reel of magnetic tape. The information that makes up the video and sound is encoded on the magnetic coating on the tape. Common audio cassettes also rely on magnetic tape. Similarly, in computers, See more
Magnetized ferromagnetic materials can be demagnetized (or degaussed) in the following ways:
• Heating a magnet past its Curie temperature; the molecular motion destroys the alignment of the magnetic domains. This … See moreWikipedia text under CC-BY-SA license Geomagnetic reversal - Wikipedia
A geomagnetic reversal is a change in a planet's dipole magnetic field such that the positions of magnetic north and magnetic south are interchanged (not to be confused with geographic north and geographic south). The Earth's magnetic field has alternated between periods of normal polarity, in which the predominant direction of the field was the same as the present direction, and reverse polari…
Wikipedia · Text under CC-BY-SA licenseEarth's magnetic field - Wikipedia
Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from Earth's interior out into space, where it interacts with the solar wind, a stream of charged particles emanating from the Sun.
21.1: Magnetism and Magnetic Fields - Physics LibreTexts
A magnetic field is generated by a feedback loop: Current loops generate magnetic fields (Ampère’s law); a changing magnetic field generates an electric field (Faraday’s law); and the electric and magnetic fields exert a force on the …
What Is Magnetic Polarity? (with pictures) - AllTheScience
May 21, 2024 · Magnetic polarity describes the magnetic field around almost any magnetic object. Almost every magnet has a north pole and a south pole that are oriented with Earth’s magnetic field. The magnetic field surrounding …
Magnetism - Simple English Wikipedia, the free encyclopedia
Magnetism is a force that attracts (pulls closer) or repels (pushes away) objects that have a magnetic material like iron inside them (magnetic objects). In simpler words, it is a property of …
Geomagnetic reversal - Simple English Wikipedia, the free …
A geomagnetic reversal is a change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged. This has happened 183 times over the …
North magnetic pole - Wikipedia
The north magnetic pole, also known as the magnetic north pole, is a point on the surface of Earth's Northern Hemisphere at which the planet's magnetic field points vertically downward (in other words, if a magnetic compass needle is …
Is Earth's Magnetic Field on The Verge of Flipping …
Nov 28, 2023 · The Earth's magnetic field reverses on time scales that vary between 100,000 to 1,000,000 years. Scientists can tell how often the magnetic field reverses by looking at volcanic rocks in the ocean.
magnetic fields - Is Earth's North pole actualy a South pole?
Jan 10, 2021 · Magnetic North is so-called to distinguish it from True North. In other words, it is a location, not its magnetic polarity. It's magnetic polarity, however, is south as it attracts the …
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