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geomagnetic field
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magnetic field of a bar magnet
Understand Earth's geomagnetic field through the dynamo effect principle
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For Students
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Solar Eclipse, Eclipse, Solar Flare, Outer Space, Astronomy
What Causes Lunar and Solar Eclipses?
A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
Inventors and Inventions of the Industrial Revolution
Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd
Causes of the Great Depression
Young boys working in a thread spinning mill in Macon, Georgia, 1909. Boys are so small they have to climb onto the spinning frame to reach and fix broken threads and put back empty bobbins. Child labor. Industrial revolution
The Rise of the Machines: Pros and Cons of the Industrial Revolution
Washington DC.,USA, April 26, 1989. Supporters for and against legal abortion face off during a protest outside the United States Supreme Court Building during Webster V Health Services
Pro and Con: Abortion
African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.
Timeline of the American Civil Rights Movement
Albert Einstein in Washington, D.C. c. 1921-1923. Physicist
The Solar Eclipse That Made Albert Einstein a Science Celebrity
Science & Tech

geomagnetic field

geophysics
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https://www.britannica.com/science/geomagnetic-field
Also known as: Earth’s magnetic field, geomagnetism, terrestrial magnetism
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magnetic field of a bar magnet
magnetic field of a bar magnet
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Category: Science & Tech
Key People:
Stanley Keith Runcorn
Edward Sabine
Johann von Lamont
Balfour Stewart
Sydney Chapman
Related Topics:
magnetosphere
polar wandering
geomagnetic storm
electrojet
Chapman-Ferraro current system
On the Web:
Internet Archive - "The geomagnetic field, its description and analysis" (Apr. 05, 2024)
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Mar. 17, 2024, 11:41 PM ET (MSN)
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geomagnetic field, magnetic field associated with Earth. It is primarily dipolar (i.e., it has two poles, the geomagnetic North and South poles) on Earth’s surface. Away from the surface the dipole becomes distorted. In the 1830s the German mathematician and astronomer Carl Friedrich Gauss studied Earth’s magnetic field and concluded that the principal dipolar component had its origin inside Earth instead of outside. He demonstrated that the dipolar component was a decreasing function inversely proportional to the square of Earth’s radius, a conclusion that led scientists to speculate on the origin of Earth’s magnetic field in terms of ferromagnetism (as ...(100 of 14820 words)

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