Dynamo Effect :
The dynamo effect is a geophysical theory that explains the origin of the Earth's main magnetic field in terms of a self-exciting (or self-sustaining) dynamo.
Geodynamo
The mechanism producing the Earth's magnetic field is believed to be a . The Earth has a predominantly dipole field with magnitude at the surface of .
Dynamos
In everyday life, a device which converts the motion of machinery to electrical energy is often known as a dynamo (a rather old term, nowadays frequently replaced by "generator").
dynamo theory Theory that explains planetary and stellar magnetic fields in terms of rotating, conducting material flowing in an object's interior.
Dynamo theory
Measurements of the secular variation show that the entire magnetic field has a tendency to drift westward at the rate of 19 to 24 km (12 to 15 mi) per year.
Dynamo Effect
The theory that the earth's magnetic field is generated in the conducting material of its molten core.
E ...
DYNAMO THEORY - Branch of magnetohydrodynamics concerned with self-excitation of magnetic fields in any large rotating mass of conducting fluid in motion (usually turbulent).
dynamo effect: The process by which a rotating, convecting body of conducting matter, such as Earth's core, can generate a magnetic field.
Dynamo - A process in which electric currents within a rotating, convective body produce a magnetic field ...
Dynamo Open Air is a festival in the Netherlands held every year since 1986.
Dynamo
An electric generator that employs a spinning magnetic field to produce electricity.
Dyne ...
Dynamos (South Africa)Dynamos (Zimbabwe)Dynamos Football Club
DynaschiffDynasetDynasmon
Dynasmon XDynastic cycleDynastic Orders of Knighthood ...
Dynamo action with the solar wind flowing past Earth, possibly producing quiet auroral arcs ("directly driven" process). The circuit of the accelerating currents and their connection to the solar wind are uncertain.
dynamo - (n.)
A device that generates electricity through the effect of motion in the presence of a magnetic field. The solar dynamo explains sunspots and the solar activity cycle.
earthshine - (n.) ...
"The dynamo likely died a few hundred million years after Mars' formation.
See also: Dynamo, Induction motor, Fluid dynamics, Hydromagnetics, nuclear energy, plasma physics
References ...
Magnetic Dynamo Theory
Planets do not have giant bar magnets in their cores, so what produces the magnetic field?
Natural MHD dynamos are an active area of research in plasma physics and are of great interest to the geophysics and astrophysics communities.
More recent dynamo models assume that the twisting is due to the effect of the Sun's rotation on the rising "tubes" of magnetic field from deep within the Sun.
dynamometer An instrument for measuring power or force; specifically, an instrument for measuring the power, torque, or thrust of an aircraft engine or rocket. See thrust meter.
Theoretical studies suggest that the Earth's magnetic field is actively generated by the motion of hot, electrically conductive materials in its liquid outer core (a magnetohydrodynamical dynamo).
This lack of an intrinsic magnetic field at Venus was surprising given that it is similar to Earth in size, and was expected to also contain a dynamo in its core. A dynamo requires three things: a conducting liquid, rotation, and convection.
The magnetic fields in galaxies are thought to arise from a dynamo effect: a small initial field, generated perhaps by turbulence, becomes amplified and ordered as it is wound up by the rotation of the galactic disk.
Rotating planets or moons with molten cores will produce magnetic fields through "the dynamo effect." In a planet like the Earth, the molten core can flow freely in a process called convection.
The Algol system has been observed to exhibit giant x-ray flares which appears to be linked to the dynamo and oscillation activity of stellar magnetic fields and interactions with mass transfer and stellar "magnetic braking" activity in the close AB ...
The combination of what takes place in the convection zone and the differential rotation of the Sun creates something called the solar dynamo. This phenomenon is the true origin of solar activity.
This dizzying pace would have had the magnetic dynamo inside the Sun working overtime, creating a much more powerful magnetic field than the Sun possesses today.
Everyone had thought that Mercury was far too small to support the required core of molten iron to generate a magnetic field via the dynamo effect. This field is a weak one, only 1 percent of the strength of the Earth's magnetic field.
The (internal) rotation and thus dynamo which powers the magnetic fields in the Sun is ultimately responsible for the solar outbursts.
Plasma churning through the atmosphere of the Sun drives powerful magnetic fields that sometimes produce cool magnetic storms called sunspots. A magnetic dynamo underneath Earth's crust generates a magnetic field around Earth.
The spacecraft was equipped with a mechanical soil-measuring penetrometer, a dynamograph, and a radiation densitometer for obtaining data on the mechanical and physical properties and the cosmic-ray reflectivity of the lunar surface.
This tidal locking has spun up the giant to a higher than normal speed, and has created considerable magnetic activity (as a result of a natural dynamo caused in part by the rotation; the Sun does the same thing).
is not completely understood, but is thought to be associated with electrical currents produced by the coupling of convective effects and rotation in the spinning liquid metallic outer core of iron and nickel. This mechanism is termed the dynamo ...
 See also: Earth, Solar, Field, Magnetic Field, Sun
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