What is the difference between the domain theory and Weber’s theory of magnetism?

What is the difference between the domain theory and  Weber’s theory of magnetism?
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1 Answer

Answer :

The domain theory is based upon the electron spin principle;  Weber’s theory uses the concept of tiny molecular magnets.
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Related questions

Using Weber’s molecular theory of magnetism, describe the polarity of the magnetic poles produced by stroking a magnetic material from right to left with the south pole of a magnet.

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Last Answer : South pole at the right, north pole at the left.

Division of labor, authority hierarchy, formal selection, formal rules and regulations, impersonality, and career orientation are all features of: (a) Weber's ideal type bureaucracy. ; (b) General administrative theory. (c) Fayol's principles of management. ; (d) Taylor's principles of management.

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Last Answer : (a) Weber's ideal type bureaucracy. ;

Which of the two types of electron motion (orbital movement and electron spin) is more important in the explanation of magnetism?

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Last Answer : Electron spin.

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Description : What are some examples of electrical equipment which use magnetism?

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Select the correct statement (A) Weber's number is the ratio of inertia force to elastic force. (B) Weber's number is the ratio of gravity force to surface tension force. (C) Weber's number is the ratio of viscous force to pressure force. (D) Weber's number is the ratio of inertia force to surface tension force.

Description : Select the correct statement (A) Weber's number is the ratio of inertia force to elastic force. (B) Weber's number is the ratio of gravity force to surface tension force. (C) Weber's number ... force to pressure force. (D) Weber's number is the ratio of inertia force to surface tension force.

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Description : Authority, discipline, unity of command, and unity of direction are: (a) Taylor's four principles of management. ; (b) Principles of the human relations movement. (c) Elements of Weber's ideal bureaucratic structure. (d) Four of Fayol's fourteen principles of management.

Last Answer : A

What characteristic of a gunn oscillator is inversely proportional to the transit time of the domain across the semiconductor?

Description : What characteristic of a gunn oscillator is inversely proportional to the transit time of the domain across the semiconductor?

Last Answer : The frequency.

The domain in a gallium-arsenide semiconductor has what type of electrical field when compared to the other regions across the body of a semiconductor?

Description : The domain in a gallium-arsenide semiconductor has what type of electrical field when compared to the other regions across the body of a semiconductor?

Last Answer : A field of much greater intensity.

What is the main advantage of using a time-domain reflectometer (tdr) to test a transmission line?

Description : What is the main advantage of using a time-domain reflectometer (tdr) to test a transmission line?

Last Answer : Tdr will indicate the nature of and the distance to or location of any faults.

Why are time-domain reflectometers often compared to a radar system?

Description : Why are time-domain reflectometers often compared to a radar system?

Last Answer : Both transmit a pulse and analyze the signal reflection.

Why don't magnets lose their magnetism?

Description : Why don't magnets lose their magnetism?

Last Answer : They can if you strike them. Unless it is a permanent magnet.

I just held a lighter to a magnet and it lost its magnetism. Why?

Description : I just held a lighter to a magnet and it lost its magnetism. Why?

Last Answer : This is too science-y for me but there’s a well-documented experiment here concluding the fact that heat reduces magnetic fields (or force, or whatever).

Where was the first magnetism discovered ?

Description : Where was the first magnetism discovered ?

Last Answer : Magnetism was first discovered in China.

When a piece of iron is rubbed with a magnet it acquires magnetism ' What kind of change is this and why ?

Description : When a piece of iron is rubbed with a magnet it acquires magnetism ' What kind of change is this and why ?

Last Answer : When a piece of iron is rubbed by a magnet, it acquires magnetism ' is a physical or positional change. This is because when rubbed by a magnet, no other substance is formed from iron. Again , when a piece of magnetized iron is heated, it loses its magnetism and is converted into ordinary iron.

What is magnetism ?

Description : What is magnetism ?

Last Answer : The attractive and directional religion of a magnet is called its magnetism. In other words, the force of a magnet is called magnetism. Without magnetism, matter cannot be considered as magnet.

What is magnetism ?

Description : What is magnetism ?

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What are the main religions of magnetism ?

Description : What are the main religions of magnetism ?

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What is the magnetism of a magnet ?

Last Answer : Magnetism of a magnet A: Physical properties.

How much magnetism does a salt have?

Description : How much magnetism does a salt have?

Last Answer : Need answer

What is a magnet that does not keep its magnetism very long?

Description : What is a magnet that does not keep its magnetism very long?

Last Answer : This would be a temporary magnet.

What has a form of energy that can produce heat light magnetism and electrical charges?

Description : What has a form of energy that can produce heat light magnetism and electrical charges?

Last Answer : if you mean to have commas between heat, light, magnetism, andelectrical charges then there is none. if heat light magnetism isall one thing then you're on your own.

What is a magnet that retains its magnetism?

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How is the orientation of earths magnetism recorded in rocks of the ocean floor?

Description : How is the orientation of earths magnetism recorded in rocks of the ocean floor?

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Can you use magnetism to test a mineral?

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How are magnetism and electricity the same?

Description : How are magnetism and electricity the same?

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Last Answer : A keeper is a iron or a steel bar that is used to retain thestrength of magnet.

Magnetism at the centre of a bar magnet is

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Magnetism in materials is due to - (1) electrons at rest (2) circular motion of electrons (3) protons at rest (4) all neutrons at rest

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If overloading a DC machine becomes necessary in an emergency, you should ____________. A. cool the machine with portable blowers and fans B. hold thermal overload relays open with blocks of wood C. inject small amounts of CO2 into the windings for cooling D. increase the residual magnetism value of windings to reduce eddy currents

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The insulation of electric generators during short idle periods should be _____________. A. allowed to cool slowly to ambient temperatures B. flashed with direct current to remove any residual magnetism C. kept warm by using strip or space heaters D. relieved of all capacitive charge by grounding the conductors

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Which of the methods listed is used to start a AC generator turning? A. Residual magnetism remaining in the field poles. B. Residual magnetism remaining in the field coils. C. Residual magnetism remaining in the armature. D. Rotation by a mechanical prime mover.

Description : Which of the methods listed is used to start a AC generator turning? A. Residual magnetism remaining in the field poles. B. Residual magnetism remaining in the field coils. C. Residual magnetism remaining in the armature. D. Rotation by a mechanical prime mover.

Last Answer : Answer: D

The twisting force developed by a motor and applied to a shaft is called _____________. A. magnetism B. electromotive force C. torque D. voltage

Description : The twisting force developed by a motor and applied to a shaft is called _____________. A. magnetism B. electromotive force C. torque D. voltage

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In replacing a defective transformer with a new one, which of the following actions must be carried out to insure proper operation of the equipment it serves? A. The secondary leads must be grounded for 10 minutes to remove static charges. B. The transformer connections must be made as before with regard to the indicated polarity. C. The iron core of the transformer must be flashed to pre-magnetize it. D. The iron core must be grounded for 10 minutes to remove any residual magnetism.

Description : In replacing a defective transformer with a new one, which of the following actions must be carried out to insure proper operation of the equipment it serves? A. The secondary leads must be grounded ... magnetize it. D. The iron core must be grounded for 10 minutes to remove any residual magnetism.

Last Answer : Answer: B

One of the generator bearing shells is generally insulated from the end housing in order to prevent _____________. A. rapid brush wear B. residual magnetism leak off C. excessive field winding heat D. circulation of shaft currents

Description : One of the generator bearing shells is generally insulated from the end housing in order to prevent _____________. A. rapid brush wear B. residual magnetism leak off C. excessive field winding heat D. circulation of shaft currents

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Loss of or weak residual magnetism in an alternator or generator can be corrected for by _________________. A. running the rotor in the opposite direction for 5 minutes B. allowing the generator to run at 10% of normal speed for 5 minutes C. running the generator at normal speed with the field rheostat fully counterclockwise D. using a storage battery or battery charger to 'flash' the field

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If a magnetic controller contact fails to pick up when the operating coil is energized, one possible cause may be _______________. A. low spring pressure B. low voltage to the coil C. the residual magnetism of the contact faces D. dirty contact faces

Description : If a magnetic controller contact fails to pick up when the operating coil is energized, one possible cause may be _______________. A. low spring pressure B. low voltage to the coil C. the residual magnetism of the contact faces D. dirty contact faces

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Insufficient brush pressure on a DC motor may cause _______. A. generator overload B. excess residual magnetism C. water vapor absorption D. sparking of the brushes

Description : Insufficient brush pressure on a DC motor may cause _______. A. generator overload B. excess residual magnetism C. water vapor absorption D. sparking of the brushes

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The greatest detrimental effect on idle electrical equipment, such as cargo pump motors, is the _____________. A. loss of residual magnetism B. absorption of moisture in the insulation C. insulation varnish flaking D. dirt collecting on the windings

Description : The greatest detrimental effect on idle electrical equipment, such as cargo pump motors, is the _____________. A. loss of residual magnetism B. absorption of moisture in the insulation C. insulation varnish flaking D. dirt collecting on the windings

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Who discovered the link between electricity and magnetism?

Description : Who discovered the link between electricity and magnetism?

Last Answer : Michel Faraday

Residual magnetism in steel for magnets is increased by the addition of (A) Nickel (B) Cobalt (C) Tungsten (D) Chromium

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Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets. (A) Chromium (B) Nickel (C) Tungsten (D) Cobalt

Description : Addition of __________ to the steel helps in increasing the residual magnetism in steel used for making magnets. (A) Chromium (B) Nickel (C) Tungsten (D) Cobalt

Last Answer : (D) Cobalt

Who discovered electro magnetism?

Description : Who discovered electro magnetism?

Last Answer : ‘Orsted’ a denish scientist discovered that whenever an electric current passes through a conductor, a magnetic field will be produced around that conductor in concentric circle. In addition to that heat will be produced in that conductor.