magnetic meridian

Definitions

  • WordNet 3.6
    • n magnetic meridian an imaginary line passing through both magnetic poles of the Earth
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Chambers's Twentieth Century Dictionary
    • Magnetic meridian the meridian lying in the direction in which the magnetic needle points
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Etymology

Chambers's Twentieth Century Dictionary
Through O. Fr., from L. magnes, a magnet—Gr. magnēs=Magnesian stone, from Magnēsia, in Lydia or Thessaly.

Usage

In literature:

We wished to avoid the tsetse of our former path, so kept a course on the magnetic meridian from Lurilopepe.
"Missionary Travels and Researches in South Africa" by David Livingstone
Take the case of a telegraph wire with its two terminal plates dipped into the earth, and suppose the wire to lie in the magnetic meridian.
"Faraday As A Discoverer" by John Tyndall
The dip was on the increase 89 degrees 25' and the declination swung to 40 degrees east of the magnetic meridian.
"The Home of the Blizzard" by Douglas Mawson
Dr. Hooke, 1684, remarked that steel or iron was magnetized when heated to redness and placed in the magnetic meridian.
"Scientific American Supplement, No. 392, July 7, 1883" by Various
The direction of the magnetic needle in London, which is called the magnetic meridian, encloses an angle of 24 deg.
"Fragments of science, V. 1-2" by John Tyndall
An arc of the horizon intercepted between the azimuth circle of a celestial object and the magnetic meridian.
"The Sailor's Word-Book" by William Henry Smyth
The arrow with but half a barb points toward what is known as the Magnetic Pole of the earth, and is called the Magnetic Meridian.
"Manual of Military Training" by James A. Moss
Another class originate at the N. W., and extend gradually south easterly on the magnetic meridian.
"The Philosophy of the Weather" by Thomas Belden Butler
Hence on the outermost surface of the earth magnetical bodies are slightly perverted from the true meridian.
"On the magnet, magnetick bodies also, and on the great magnet the earth" by William Gilbert of Colchester
W. of N., thus approaching much more closely to the magnetic meridian 29.9 deg.
"Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 8" by Various
DEVIATION OF THE COMPASS, the deflection of a ship's compass needle from the magnetic meridian, caused by adjacent iron.
"The New Gresham Encyclopedia" by Various
But the compass, pointing to the magnetic Pole along the ninety-seventh meridian, was as useful as ever.
"My Attainment of the Pole" by Frederick A. Cook
By this means the axis of the coil is brought into the magnetic meridian.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 3" by Various
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In science:

Abundance patches along the magnetic equator will cause high-excitation lines (those usually visible at optical wavelengths) to strengthen as these regions cross the observer’s meridian, whereas low-excitation lines would strengthen at disk occultation phases.
The magnetic Bp star 36 Lyncis, II. A spectroscopic analysis of its co-rotating disk
As the magnetic field lines at La Palma are tilted by ∼ 7◦ westwards with respect to the meridian the tra jectory is asymmetric with respect to 180◦ Az angle.
Monte Carlo Studies of Geomagnetic Field Effects on the Imaging Air Cherenkov Technique for the MAGIC Telescope Site
In order to account for both the radio and the optical data, the magnetic field in t he perturbed region is described as a uniform field outside the s hells and, within the shell thickness, as a compressed field lying a long the meridian circles.
The local Galactic magnetic field in the direction of Geminga
They are the projection on the Galactic plane and, respectively, the meridian plane ℓ = 180◦ of the local and very local magnetic field, and of Shell 1 of Wolleben (2007).
The local Galactic magnetic field in the direction of Geminga
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