field gradient


Also found in: Medical.

field gradient

[′fēld ‚grād·ē·ənt]
(physics)
A vector obtained by applying the del operator to a scalar field.
A tensor obtained by dyadic multiplication of the del operator with a vector field.
References in periodicals archive ?
Material with an electric field gradient of 41 MV/m
He found that while the effect was small, the material was able to generate a cooling effect in response to a moderate magnetic field gradient.
Because the KMXP sensors detect a magnetic field gradient, they are virtually insensitive to homogenous stray fields and vibrations.
As described above, to determine the effect of the gravity field gradient along a levelling profile to the levelling results, the height increments measured need to be converted into geopotential numbers, if necessary, adjusted and later converted to conventional normal height values.
The magnetic field gradient influences the flame behaviour (shapes, sizes), rate of heat production and combustion efficiency (Nagaraju 2005; Swaminathan 2005).
The absorbed radiation flux inside of them causes the overheating of the inner droplet layers and creates preconditions for the occurrence of a negative temperature field gradient.
Switching on an electric field gradient changes the strongest absorption color in different parts of the crystal, so that one end absorbs strongly at the blue part of the spectrum and the other end toward the red.
The car can scoot around a gold surface when exposed to heat or an electric field gradient, but its movement is limited-the drawbacks prevent its widespread use.
This reduction in voxel size is greatly facilitated by using small magnetic field gradient coils that are capable of rapidly generating extremely steep magnetic field gradients (Mayer et al.
The levitation occurs due to the force which a ferrofluid, placed into a magnetic field gradient, exerts upon these bodies.
cm] permit one to obtain a magnetic flux density near the wall of about 1 T and to create a field gradient of about 2 T/cm.
Magnetic fie]d intensity and the magnetic field gradient are key variables that affect separation response.