Help


[permalink] [id link]
+
Page "Jean-Pierre Petit" ¶ 21
from Wikipedia
Edit
Promote Demote Fragment Fix

Some Related Sentences

magnetized and pressure
It featured a stainless steel roof, air suspension, the first automatic two-position " memory " power seats, a dual four-barrel V-8, low profile tires with thin white-walls, automatic trunk opener, Cruise Control, high pressure coooling system, polarized sun visors, Signal-Seeking twin speaker radio, electric antenna, automatic-release parking brake, electric door locks, dual heating system, silver magnetized glovebox, drink tumblers, cigarette and tissue dispensers, lipstick and cologne, ladies compact with powder puff, mirror and matching leather notebook, comb and mirror, Arpège atomizer with Lanvin perfume, automatic starter with restart function, Autronic Eye, drum-type electric clock, power windows, forged aluminum wheels and air conditioning.
It featured a stainless steel roof, air suspension, the first automatic " memory " power seats, a dual four-barrel V-8, low profile tires with thin white-walls, automatic trunk opener, Cruise Control, high pressure coooling system, polarized sun visors, Signal-Seeking twin speaker radio, electric antenna, automatic-release parking brake, electric door locks, dual heating system, silver magnetized glovebox, drink tumblers, cigarette and tissue dispensers, lipstick and cologne, ladies compact with powder puff, mirror and matching leather notebook, comb and mirror, Arpège atomizer with Lanvin perfume, automatic starter with restart function, Autronic Eye, drum-type electric clock, power windows, forged aluminum wheels and air conditioning.

magnetized and with
It forms because the solar velocity of the wind exceeds ( typically 2 – 3 times ) that of Alfvén waves, a family of characteristic waves with which disturbances propagate in a magnetized fluid.
Though rare, the reeds can become magnetized over time, which makes them stick ' on ' even when no current is present ; changing the orientation of the reeds with respect to the solenoid's magnetic field can resolve this problem.
The magnetization of a magnetized material is the local value of its magnetic moment per unit volume, usually denoted M, with units A / m.
It is a vector field, rather than just a vector ( like the magnetic moment ), because different areas in a magnet can be magnetized with different directions and strengths ( for example, because of domains, see below ).
For a uniformly magnetized cylindrical bar magnet, the net effect of the microscopic bound currents is to make the magnet behave as if there is a macroscopic sheet of electric current flowing around the surface, with local flow direction normal to the cylinder axis.
* Compasses: A compass ( or mariner's compass ) is a magnetized pointer free to align itself with a magnetic field, most commonly Earth's magnetic field.
* 1963 – Frederick Vine and Drummond Matthews explain the stripes of magnetized rocks with alternating magnetic polarities running parallel to mid-ocean ridges as due to sea floor spreading and the periodic geomagnetic field reversals ( Vine – Matthews – Morley hypothesis )
Products include magnetic bracelets and jewelry ; magnetic straps for wrists, ankles, knees, and the back ; shoe insoles ; mattresses ; magnetic blankets ( blankets with magnets woven into the material ); magnetic creams ; magnetic supplements ; plasters / patches and water that has been " magnetized ".
In 1991, with the rediscovery of the magnetorotational instability ( MRI ), S. A. Balbus and J. F. Hawley established that a weakly magnetized disc accreting around a heavy, compact central object would be highly unstable, providing a direct mechanism for angular-momentum redistribution.
The heads and other metallic components in the tape path ( such as spindles and capstans ) may become magnetized with use, and require degaussing.
Kristian Birkeland and his magnetized terrella experiment, which led him to surmise that charged particles interacting with the Earth's magnetic field were the cause of the aurora.
Half a century later, the father-and-son team of Harold Babcock and Horace Babcock showed that the solar surface is magnetized even outside of sunspots ; that this weaker magnetic field is to first order a dipole ; and that this dipole also undergoes polarity reversals with the same period as the sunspot cycle ( see graph below ).
Recent research has found that only a variety of magnetite with a particular crystalline structure, a mixture of magnetite and maghemite, has sufficient coercivity to remain magnetized and thus be a permanent magnet.
The program allowed registered users access to the cars with a magnetized card and charged according to mileage used.
Hohner's later " Pianet T " uses silicone rubber suction pads rather than adhesive pads and replaces the electrostatic system with passive electromagnetic pickups similar to those of the Rhodes, the reeds themselves however being magnetized.
In particular, the refraction effects will lead to beam splitting effects that can be easily detected in the radio light curves of highly magnetized pulsars and could allow for the detection of light bosons with much greater sensitivities than are currently achievable by other means.
The device consisted of two circular boxes, similar to compasses, each with a magnetic needle, supposed to be magnetized by the same lodestone.
In 1909, he began working as an assistant to the physicist Kristian Birkeland, known for bombarding magnetized spheres with electrons and obtaining aurora-like effects ; thus Skolem's first publications were physics papers written jointly with Birkeland.
It appeared again during the 2003 Invasion of Iraq with similar meanings, most prominently in the form of a yellow ribbon printed on magnetized material and displayed on the outside of automobiles.
A Halbach cylinder is a magnetized cylinder composed of ferromagnetic material producing ( in the idealised case ) an intense magnetic field confined entirely within the cylinder with zero field outside.

magnetized and high
The magnetic material for a core memory requires a high degree of magnetic remanance, the ability to stay highly magnetized, and a low coercitivity so that less energy is required to change the magnetization direction.
These transport mechanisms lead to the accumulation of the magnetized decay products at high solar latitudes, eventually reversing the polarity of the polar fields ( notice how the blue and yellow fields reverse in the graph above ).
This material has a wide hysteresis loop ( high retentivity ), meaning once it is magnetized in a given direction, it requires a large reverse magnetic field to reverse the magnetization.
The magnetization is normally done with a high current pulse that reaches a peak current very quickly and instantaneously turns off leaving the part magnetized.
Air and vacuum have high reluctance, while easily magnetized materials such as soft iron have low reluctance.
The LaPD is a pulsed-discharge device operated at a high ( 1 Hz ) repetition rate, producing a strongly magnetized background plasma which is physically large enough to support Alfvén waves.
The sand in the beaches of Tolosa were black until the 1970s because of the abundance of the mineral called magnetite, a naturally magnetized iron, which was a prime raw material for high quality steel.
Air and vacuum have high reluctance, while easily magnetized materials such as soft iron have low reluctance.

magnetized and currents
The ionospheres of weakly magnetized planets such as Venus and Mars set up currents that partially deflect the solar wind flow, but do not have magnetospheres, per se.
The idea behind this was that at lower frequencies and higher head currents the Ferric layer would be more deeply magnetized, while at higher frequencies only the top Cr-layer was active.
When the currents from all these atoms are put together, they create the same effect as a macroscopic current, circulating perpetually around the magnetized object.

magnetized and plasma
In a magnetized plasma, the problem is much more difficult.
In a magnetized plasma, the projected area is taken, that is, the area of the electrode as viewed along the magnetic field.
In a magnetized plasma, the electrode is sometimes assumed to be increased in a similar way by the ion Larmor radius.
The theory of Langmuir probes is much more complex when the plasma is magnetized.
Various geometries have been proposed for use as ion temperature probes, for example, two cylindrical tips that rotate past each other in a magnetized plasma.
In a magnetized plasma, it appears to be best to choose a probe size a few times larger than the ion Larmor radius.
In the case of a magnetized plasma, the screened Poisson equation is quasi-2D:
The low-frequency permittivity of a magnetized plasma is given by
An upper hybrid oscillation is a mode of oscillation of a magnetized plasma.
Ion acoustic waves can occur in an unmagnetized plasma or in a magnetized plasma parallel to the magnetic field.
An electrostatic ion cyclotron wave is a longitudinal oscillation of the ions ( and electrons ) in a magnetized plasma, propagating nearly ( but not exactly ) perpendicular to the magnetic field.
A lower hybrid oscillation is a longitudinal oscillation of ions and electrons in a magnetized plasma.
A magnetosonic wave ( also magnetoacoustic wave ) is a longitudinal wave of ions ( and electrons ) in a magnetized plasma propagating perpendicular to the stationary magnetic field.
In a magnetized plasma, the collision frequency is usually small compared to the gyrofrequency, so that the step size is the gyroradius ρ and the step time is the inverse of the collision frequency ν, leading to D
In a magnetized plasma, there are two modes perpendicular to the field, the O and X modes, and two modes parallel to the field, the R and L waves.

1.370 seconds.