Magnetic-fields sentence example
The strongest magnetic fields employed for experimental purposes are obtained by the use of electromagnets.
Bidwell," who, adopting special precautions against sources of error by which former work was probably affected, measured the changes of thermo-electric force for iron, steel, nickel and cobalt produced by magnetic fields up to I Soo units.
This last point is important in connexion with voltmeters used on the switchboards of electric generating stations, where relatively strong electric or magnetic fields may be present, due to strong currents passing through conductors near or on the board.
These experiments furnished the first elementary forms of electric motor, since it was then seen that rotatory motion could be produced in masses of metal by the mutual action of conductors conveying electric current and magnetic fields.
He proved by systematic experiments that the electromotive forces set up in conductors by their motions in magnetic fields or by the induction of other currents in the field were due to the secondary conductor cutting lines of magnetic force.Advertisement
The fundamental fact connecting electric currents and magnetic fields is that the line integral of magnetic force taken once round a conductor conveying an electric current is equal to 4 7r-times the surface integral of the current density, or to 4 7r-times the total current flowing through the closed line round which the integral is taken (see Electrokinetics).
Back Pad (shown left) Designed to relieve most backaches by using powerful magnetic fields to penetrate to the depth of the pain.
One aim of the present project is to prove the conjecture for the magnetic fields.
The giant planets in the outer parts of the solar system all have strong magnetic fields.
What role do magnetic fields play in the early stages of star formation?Advertisement
Expensive measures offer present solutions Liquid crystal display monitors are totally impervious to the effects of magnetic fields.
For example, in 1861-65 James Clerk Maxwell explained the interrelation of electric and magnetic fields in his unified theory of electromagnetism.
The research program will develop technologies for mineral separation using magnetic levitation, and for manipulation of nanomaterials using magnetic fields.
The study found no association with measured magnetic fields.
It must be a triplet because that hydrogen is experiencing any one of three slightly different magnetic fields.Advertisement
Studying planetary magnetic fields enables us to explore what is happening deep inside the planets.
The main difficulty arises from the rapidly varying magnetic fields which originate in a region of near-Earth space called the magnetosphere.
A microwave oven employs a device called a magnetron which produces strong magnetic fields with very short wavelengths (high frequency ).
Electromagnetic waves consist of oscillating electric and magnetic fields which induce oscillations of the dipole.
And to indulge a passion for The Magnetic Fields '69 Love Songs, my favorite album.Advertisement
Thus magnetic fields can now be surveyed in thin film samples of high-temperature superconductors.
For the method cancelation of ambient magnetic fields is necessary and the triaxial coil system shown in the picture is used.
Cardiac magnetic resonance imaging (MRI) is a scanning method that uses magnetic fields and radio waves to create three-dimensional images of the heart.
Magnetic resonance imaging is a scanning method that uses magnetic fields and radio waves to create three-dimensional images of the heart, which reveal how blood flows through the heart and how the heart is working.
Cardiac MRI, a scanning method that uses magnetic fields and radio waves to create three-dimensional images of the heart, can help physicians evaluate congenital cardiovascular defects, but is not always necessary.Advertisement
In rTMS, a large magnet is placed on the patient's head and magnetic fields of different frequency are generated to stimulate the left front cortex of the brain.