magnetic$46228$ - definizione. Che cos'è magnetic$46228$
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Cosa (chi) è magnetic$46228$ - definizione

Magnetic pistols; Magnetic exploder; Magnetic influence

magnetic field         
  • [[Hans Christian Ørsted]], ''Der Geist in der Natur'', 1854
  • A sketch of Earth's magnetic field representing the source of the field as a magnet. The south pole of the magnetic field is near the geographic north pole of the Earth.
  • A [[Solenoid]] with electric current running through it behaves like a magnet.
  • '''M'''}} inside and outside a cylindrical bar magnet.
SPATIAL DISTRIBUTION OF VECTORS ALLOWING THE CALCULATION OF THE MAGNETIC FORCE ON A TEST PARTICLE
Magnetic flux density; B-Field; B-field; Magnetic field density; Magnetic Field; Magnetic field strength; Magnetic force field; Nonlinear magnetic field; Magnetic fields; Magnetic Flux Density; H-field; Magnatic field; B-fields; Magnetic field lines; Magnetic field line; Magnetizing field; Auxiliary magnetic field; H field; Effective magnetic field; Potential magnetic field; Magnetic field intensity; Strong magnetic field; Magnetic field energy density; Magnetic Field Energy Density; Magnetic field vector; Magnetic lines of force; Amperes per meter; Amperes per metre; Applied magnetic field; Ampere per metre; Magnetic vector
(magnetic fields)
A magnetic field is an area around a magnet, or something functioning as a magnet, in which the magnet's power to attract things is felt.
N-COUNT
Magnetic Lines of Force         
  • [[Hans Christian Ørsted]], ''Der Geist in der Natur'', 1854
  • A sketch of Earth's magnetic field representing the source of the field as a magnet. The south pole of the magnetic field is near the geographic north pole of the Earth.
  • A [[Solenoid]] with electric current running through it behaves like a magnet.
  • '''M'''}} inside and outside a cylindrical bar magnet.
SPATIAL DISTRIBUTION OF VECTORS ALLOWING THE CALCULATION OF THE MAGNETIC FORCE ON A TEST PARTICLE
Magnetic flux density; B-Field; B-field; Magnetic field density; Magnetic Field; Magnetic field strength; Magnetic force field; Nonlinear magnetic field; Magnetic fields; Magnetic Flux Density; H-field; Magnatic field; B-fields; Magnetic field lines; Magnetic field line; Magnetizing field; Auxiliary magnetic field; H field; Effective magnetic field; Potential magnetic field; Magnetic field intensity; Strong magnetic field; Magnetic field energy density; Magnetic Field Energy Density; Magnetic field vector; Magnetic lines of force; Amperes per meter; Amperes per metre; Applied magnetic field; Ampere per metre; Magnetic vector
Lines of force indicating the distribution of magnetic force, which is due presumably to whirls of the ether. A wire or conductor through which a current is passing is surrounded by an electro-magnetic field of force, q. v., whose lines of force form circles surrounding the conductor in question. A magnet marks the existence of a similar electro-magnetic field of force whose lines form circuits comprising part of and in some places all of the body of the magnet, and which are completed through the air or any surrounding paramagnetic or diamagnetic body. They may be thought of as formed by the Ampérian sheet of current, and analogous to those just mentioned as surrounding a conductor. Fig. 223. MAGNETIC LINES OF FORCE, DIRECTION OF. A magnetic line of force may be thought of as a set of vortices or whirls, parallel to each other, and strung along the line of force which is the locus of their centres. If as many lines are drawn per square centimeter as there are dynes (per unit pole) of force at the point in question, each such line will be a unitary c. g. s. line of force.
Magnetic field         
  • [[Hans Christian Ørsted]], ''Der Geist in der Natur'', 1854
  • A sketch of Earth's magnetic field representing the source of the field as a magnet. The south pole of the magnetic field is near the geographic north pole of the Earth.
  • A [[Solenoid]] with electric current running through it behaves like a magnet.
  • '''M'''}} inside and outside a cylindrical bar magnet.
SPATIAL DISTRIBUTION OF VECTORS ALLOWING THE CALCULATION OF THE MAGNETIC FORCE ON A TEST PARTICLE
Magnetic flux density; B-Field; B-field; Magnetic field density; Magnetic Field; Magnetic field strength; Magnetic force field; Nonlinear magnetic field; Magnetic fields; Magnetic Flux Density; H-field; Magnatic field; B-fields; Magnetic field lines; Magnetic field line; Magnetizing field; Auxiliary magnetic field; H field; Effective magnetic field; Potential magnetic field; Magnetic field intensity; Strong magnetic field; Magnetic field energy density; Magnetic Field Energy Density; Magnetic field vector; Magnetic lines of force; Amperes per meter; Amperes per metre; Applied magnetic field; Ampere per metre; Magnetic vector
A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. A moving charge in a magnetic field experiences a force perpendicular to its own velocity and to the magnetic field.

Wikipedia

Magnetic pistol

Magnetic pistol is the term for the device on a torpedo or naval mine that detects its target by its magnetic field, and triggers the fuse for detonation. A device to detonate a torpedo or mine on contact with a ship or submarine is known as a contact pistol.

A magnetic pistol on a mine will allow the mine to detonate in proximity to a target, rather than actual contact, allowing the mine to cover a larger effective area.

A magnetic pistol on a torpedo allows the torpedo to detonate underneath the ship, instead of upon impact with the side of the ship. As an explosion underneath a ship is contained between water and the ship, far more damage will result to the ship. The explosion will lift the ship out of the water and may break the keel of the ship, splitting it in two. Any hole created by the explosion will be on the bottom, causing more flooding.

A contact pistol on a torpedo will require the torpedo to strike the side of the ship. Any hole created by the explosion will be closer towards the waterline, reducing flooding. The explosion will also dissipate into the air, reducing the damage. If the torpedo is fired too deep, the torpedo will not hit the ship. If the ship has a round or sloping bottom, the torpedo may glance off the bottom and not detonate.