Inclination of the magnetic needle. Magnetic inclination and Magnetic declination

magnetic inclination, injection I between the geomagnetic field strength vector T and a horizontal plane at the considered point on the earth's surface (see Fig. Terrestrial magnetism ).n. m. is measured from the horizontal plane up or down; N. m. is positive when the vector T pointing down from the horizontal plane, which is the case in the Northern Hemisphere, and negative when T directed upwards - in the southern hemisphere. N. m. varies on the earth's surface from 0 ° to ± 90 °. Curves connecting points on the earth's surface with identical values ​​of N. m. are called isoclines . Isocline I= 0 is called the magnetic equator; the point where I= 90°, - the north magnetic pole of the Earth; the point where I\u003d - 90 °, - south magnetic pole (see. Earth's magnetic poles ). N. m. measure inclinators .

Great Soviet Encyclopedia M.: "Soviet Encyclopedia", 1969-1978

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At each point in space, the geomagnetic field is characterized by the intensity vector H, the magnitude and direction of which depend on the coordinates of a point on the Earth's surface. The intensity of the geomagnetic field decreases from the magnetic poles to the magnetic equator from ~53 A×m-1 to ~28 A×m-1, average value H at the surface it is ~45A×m-1, and at the magnetosphere boundary it is ~10-3A m-1. The dipole magnetic moment of the Earth forms an angle q = 11.5 ° with the axis of rotation of the Earth. The magnitude of the geomagnetic field H is composed of a constant and a variable component. The constant component is due to the internal structure of the Earth and is subject to slow changes, its contribution to the total value H is 99%. In different geological epochs, the geomagnetic field had a different polarity, that is, with a period of up to 10 million years, the main magnetic field of the Earth reversed its polarity. Paleomagnetic studies have shown that the last such change took place about 700 thousand years ago. The variable component of the geomagnetic field (its contribution to H is 1%) is due to electric currents in the magnetosphere associated with the flow around and breakthrough of the solar wind, which has different densities and velocities of charged particles. Periodic solar-diurnal and lunar-diurnal magnetic variations are observed H, as well as strong perturbations of the magnetosphere - magnetic storms,

accompanied by auroras, ionospheric changes, the appearance of X-ray and low-frequency radiation. The magnitude and direction of the tension vector H depend on the coordinates of the point of the magnetosphere at which this quantity is determined. At any point, the vector of the earth's magnetic field strength H can be decomposed into components (see Fig. 2). Tension vector direction H coincides with the tangent to the field line

the Earth's magnetic field and at the magnetic equator horizontally to the surface, and vertically at the magnetic pole. At points where the horizontal component H r disappears, the magnetic needle is set vertically. These points are called magnetic inclination poles(magnetic poles). At any other points of the magnetosphere, the intensity vector H directed at an angle b to the vertical at a given point on the Earth (see Fig. 2). Angle b between vector direction H at a given point in the magnetosphere and the horizontal plane is called magnetic inclination(Fig. 2). Due to the discrepancy between magnetic and geographical

The physical poles do not coincide and the planes of the magnetic and geographic meridians.

Angle b between the directions of the magnetic and geographic

ridians at a given point in the magnetosphere is called magnetic

declension(Fig. 2). To observe temporary wa directions of the magnetic and geographic meridians at a given point, the magnetic. To observe the time directions of the magnetic and geographic meridians at a given point of the magnetosphere, it is called the magnetic variation of the declination value (and for conducting mine surveying and geophysical measurements), a declinator device is used (declino (lat.), deklinativ (eng.) - deviation).

Full tension vector H geomagnetic field at any point in the magnetosphere can be decomposed into two components: horizontal Ng and vertical Hb(see fig. 2). A detailed study of the Earth's magnetic field is of great scientific and practical importance; it comes down to a systematic determination of changes in the elements of the magnetosphere. (a, b, Hg) in various geographical locations. The Elements of Terrestrial Magnetism for Greenwich in 1955 had the following meanings:

a = 80.44" W, b = 660.33", Hg = 0.187, Hv = 0.434. Cartridges, has geographic coordinates: 52.470С, 104.030В, geomagnetic

coordinates: 41.6.0 174.750. The elements of the Earth's magnetism according to the data of this station for Irkutsk in 1980 had the values ​​a = - 2.360, Bg = 19.65 10 -6 T, Bv = 59.9 10 -6 T.

For a number of successive epochs, usually every five years, the distribution of the magnetic field on the Earth's surface is magnetic cards three or more magnetic elements. On such cards are isolines, along which this element has a constant value. The lines of equal declination a are called isogones, inclination b - isoclines, the values ​​of the total intensity vector H - isodynamic lines

(isodynamics). On the maps H with isodynamics foci, where H=0, and there are magnetic poles(poles of inclination). These poles (like the geographic poles) are the convergence points of the isogones on maps of equal declination a.

injection I between the geomagnetic field strength vector T and a horizontal plane at the considered point on the earth's surface (see Terrestrial magnetism). m. is measured from the horizontal plane up or down; N. m. is positive when the vector T pointing down from the horizontal plane, which is the case in the Northern Hemisphere, and negative when T directed upwards - in the southern hemisphere. N. m. varies on the earth's surface from 0 ° to ± 90 °. Curves connecting points on the earth's surface with identical values ​​of N. m. are called isoclines. Isocline I= 0 is called the magnetic equator; the point where I= 90°, - the north magnetic pole of the Earth; the point where I\u003d -90 °, - the south magnetic pole (see Magnetic Poles of the Earth). N. m. is measured by inclinators.

• - grammatical category of the verb, the forms of which express differences in relation to the content of the statement to reality or in relation to the speaker to the content of the statement ...
• - the angle between the geomagn. field and a horizontal plane at the considered point on the earth's surface ...

  Natural science. encyclopedic Dictionary

• - TILT. A predicate form denoting the speaker's attitude to the reality of the manifestation of a sign expressed by a word or words with this form ...

  Dictionary of literary terms

• - the angle between the directions of the horizontal line and the magnetic needle, freely rotating on the horizontal axis and located in the plane of the magnetic meridian ...

  Technical railway dictionary

• - the quality that determines the opposite direction of frets and chords. Genetically, the concept of "N." intersects with other Greek. by origin the concept of "genus" ...

  Music Encyclopedia

• - the angle between the direction of the lines of force of the Earth's magnetic field and the horizontal plane. See Elements of terrestrial magnetism...

  Geological Encyclopedia

• - see Earth magnetism...

  Marine vocabulary

• - the angle between the horizontal plane and the magnetic axis of a freely suspended pointer...

  Marine vocabulary

• - special verb form; expresses one or another shade of the action signified by this verb ...
• - see Earth magnetism...

  Encyclopedic Dictionary of Brockhaus and Euphron

• - I Mood is a grammatical category of the verb, expressing the relation of the content of the statement to reality ...
• - angle I between the vector of the geomagnetic field strength T and the horizontal plane at the considered point on the earth's surface. n. m. is measured from the horizontal plane up or down ...

  Great Soviet Encyclopedia

• - MAGNETIC Inclination - see Magnetic inclination...
• - in music - the quality of the mode, which is determined by which third is formed between the I and III steps - large or small. See Major and Minor...

  Big encyclopedic dictionary

• - the angle between the vector of the geomagnetic field and the horizontal plane at the considered point on the earth's surface ...

  Big encyclopedic dictionary

• - the angle formed with the horizon plane by a magnetic needle rotating around a horizontal axis in the plane of the magnetic meridian ...

  Dictionary of foreign words of the Russian language

"Magnetic inclination" in books

magnetic magic

From the book What Einstein told his cook by Wolke Robert

The imperative mood in the call to the Other

From the book Personal Reality. Project coordination by Ananda Atma

The imperative mood in the call to the Other “Start - and quit, and start again - and quit again, and forever fight and rush about ... And peace is spiritual meanness!” "How steel was tempered" "Start from the Beginning!" even in relation to oneself it is necessary to dose, so as not to

1.9, Magnetic intoxication.

From the book THE SCIENCE OF LOVE author Salas Sommer Dario

1.9, Magnetic intoxication. Magnetic intoxication, being much less harmful and pernicious than psychic vampirism, nevertheless, turns a person into a blind creature, whose intelligence has faded, and the ability to think independently and make the right decisions

37. Magnetic field

From the book Medical Physics author Podkolzina Vera Alexandrovna

37. Magnetic field A magnetic field is called all matter, through which a force is exerted on moving electric charges placed in a field, and other bodies that have a magnetic moment. For a magnetic field, as well as for an electrostatic one,

Subjunctive mood

From the book Tragedy of 1941. Causes of the disaster [anthology] author Morozov Andrey Sergeevich

Subjunctive Mood Again and again, historical consciousness returns to the question: was it possible to prevent the tragedy of the Soviet-German war? If Stalin had really tried to prevent a war, what would he have done? Surround the country with lines of pillboxes

Chapter 1 THE SUBJUNCTIVE MOOD IN RUSSIAN HISTORY

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Subjunctive mood

From the book Unknown Russia. A story that will surprise you the author Uskov Nikolai

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Inclination (in music)

TSB

Inclination (in music) Inclination in music, the quality of the mode, determined by which third is formed between the I and III steps - large or small. Hence, there are two main types of N.: major (between the I and III steps of a major third) and minor. N. fret is associated with specific

Mood (grammatical category of the verb)

From the book Great Soviet Encyclopedia (NA) of the author TSB

Magnetic inclination

From the book Great Soviet Encyclopedia (NA) of the author TSB

Pelvic tilt

From the book Encyclopedia of Clinical Obstetrics author Drangoy Marina Gennadievna

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IMPERATIVE MOOD

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THE IMPERATIVE OF HISTORY Instead of an afterword

From the book The Imperative Mood of History author Matveychev Oleg Anatolievich

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GAME OF THE SUBJUNCTIVE MOOD

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(deviation), the difference between the direction indicated by a magnetic compass and true north. This difference is created because the magnetic north pole does not line up with the true north pole. As a result, a deviation of different magnitude is created in different regions of the Earth. In addition, the north magnetic pole moves slowly over time, and therefore the deviation varies from year to year.

Watch value Magnetic Inclination in other dictionaries

Imperative mood- imperative
Synonym dictionary

Mood- inclinations, cf. 1. action according to verb. tilt-tilt and tilt-tilt. 2. The form of the verb, expressing how the action is presented - real, desired, required ........
Explanatory Dictionary of Ushakov

Mood- -I; cf.
1. to Tilt - tilt and Tilt - lean.
2. Lingu. A category of a verb expressing an attitude towards reality. indicative n. Imperative........
Explanatory Dictionary of Kuznetsov

Rotating Magnetic Field is a magnetic field whose magnetic induction vector rotates in space with a constant frequency. Obtained by adding 2 or more alternating magnetic fields shifted ........

Critical Magnetic Field- the value of the magnetic field strength, upon reaching which the magnetic field penetrates the superconductor and causes its transition to a non-superconducting (normal) state ........
Big encyclopedic dictionary

Magnetic Inclination- see Magnetic inclination.
Big encyclopedic dictionary

Magnetic Saturation- achievement of the maximum possible value of magnetization M? for a given substance. In ferromagnets, magnetic saturation is considered to be reached if the magnetic moment ........
Big encyclopedic dictionary

Magnetic Enrichment- (magnetic separation) - a method of separating minerals from each other or from waste rock based on differences in their magnetic properties. Mainly used for enrichment...
Big encyclopedic dictionary

Magnetic Cooling- (adiabatic demagnetization) - lowering the temperature of paramagnets in a strong magnetic field, with a quick turn off of the field (see Magnetocaloric ........
Big encyclopedic dictionary

A magnetic field- one of the forms of the electromagnetic field. is created by moving electric charges and spin magnetic moments of atomic carriers of magnetism (electrons, protons ........
Big encyclopedic dictionary

Earth's Magnetic Field- to distances? 3R= (R= - radius of the Earth) corresponds approximately to the field of a uniformly magnetized ball with a field strength of? 55 -7 A / m (0.70 Oe) at the Earth's magnetic poles and 33.4 ........
Big encyclopedic dictionary

Magnetic Aftereffect is the same as magnetic viscosity.
Big encyclopedic dictionary

Reluctance- characteristics of the magnetic circuit, the ratio of the magnetomotive force in the circuit to the magnetic flux created in it.
Big encyclopedic dictionary

Magnetic Aging- change in the magnetic properties (magnetization, etc.) of ferro- or ferrimagnets with time. Occurs under the influence of external influences (magnetic fields, temperature fluctuations, ........
Big encyclopedic dictionary

Mood- in music - the quality of the mode, determined by which third is formed between the I and III steps - large (major inclination) or small (minor inclination). See Major and Minor.
Big encyclopedic dictionary

Inclination Magnetic is the angle between the vector of the geomagnetic field and the horizontal plane at the considered point on the earth's surface.
Big encyclopedic dictionary

Reynolds Number Magnetic- a criterion in magnetohydrodynamics that determines the nature of the flows of conductive liquids (liquid metals, electrolytes) and gases (plasma) in a magnetic field. Reynolds magnetic number...
Big encyclopedic dictionary

Declination Magnetic- the angle between the geographic and magnetic meridians at a given point on the earth's surface. is considered positive if the north end of the magnetic needle is tilted to the east ........
Big encyclopedic dictionary

In 1544, the German scientist Georg Hartmann discovered magnetic inclination. Magnetic inclination is the angle at which the arrow under the influence of the Earth's magnetic field deviates from the horizontal plane up or down. In the hemisphere north of the magnetic equator (which does not coincide with the geographic equator), the north end of the arrow deviates downward, in the south it is vice versa. At the magnetic equator itself, the magnetic field lines are parallel to the Earth's surface.
For the first time, the assumption about the presence of the Earth's magnetic field, which causes such a behavior of magnetized objects, was made by the English physician and natural philosopher William Gilbert in 1600 in his book On the Magnet, in which he described an experiment with a ball of magnetic ore and a small iron arrow. Gilbert came to the conclusion that the Earth is a large magnet. The observations of the English astronomer Henry Gellibrand showed that the geomagnetic field is not constant, but changes slowly.
José de Acosta (one of the Founders of Geophysics, according to Humboldt) in his History (1590) first had the theory of four lines without magnetic declination (he described the use of the compass, the angle of declination, the difference between the Magnetic and the North Pole; although declinations were known as early as in the 15th century, he described the fluctuation of deviations from one point to another; he identified places with zero deviation: for example, in the Azores).
The angle at which the magnetic needle deviates from the north-south direction is called magnetic declination. Christopher Columbus discovered that magnetic declination does not remain constant, but undergoes changes with changes in geographic coordinates. The discovery of Columbus served as an impetus for a new study of the Earth's magnetic field: sailors needed information about it. The Russian scientist M. V. Lomonosov in 1759, in his report “Discourse on the great accuracy of the sea route,” gave valuable advice to increase the accuracy of the compass readings. To study terrestrial magnetism, M. V. Lomonosov recommended organizing a network of permanent points (observatories) in which to make systematic magnetic observations; such observations should be widely carried out at sea as well. Lomonosov's idea of ​​organizing magnetic observatories was realized only 60 years later in Russia.
In 1831, the English polar explorer John Ross discovered the magnetic pole in the Canadian archipelago - the area where the magnetic needle occupies a vertical position, that is, the inclination is 90 °. In 1841, James Ross (nephew of John Ross) reached the other magnetic pole of the Earth, located in Antarctica.
Karl Gauss put forward a theory about the origin of the Earth's magnetic field and in 1839 proved that its main part comes out of the Earth, and the cause of small, short deviations in its values ​​must be sought in the external environment.
(Wikipedia)