# magnetic flux density

Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to magnetic flux density: magnetic field strength, magnetic field intensity

## magnetic flux density

(magnetic induction) Symbol: B. A vector quantity that is a measure of the strength of a magnetic field in a particular direction at a particular point. It may be given in terms of the force, F , on a charge, q , moving in the magnetic field:
B = F /(qv sinθ)
where v is the velocity of the charge, which is moving at an angle θ to the direction of the field. Magnetic flux density is usually measured in teslas. The magnetic flux, symbol: Φ, is the surface integral of B , i.e.
Φ =   B .dA =   B cosα dA
where α is the angle between B and a line perpendicular to the surface. The magnetic flux density is thus the magnetic flux passing perpendicularly through unit area. Magnetic flux is measured in webers.

## magnetic flux density

[mag′ned·ik ′fləks ‚den·səd·ē]
(electromagnetism)
A vector quantity that is used as a quantitative measure of magnetic field; the force on a charged particle moving in the field is equal to the particle's charge times the cross product of the particle's velocity with the magnetic flux density (SI units). Also known as magnetic displacement; magnetic induction; magnetic vector.
References in periodicals archive ?
Magnetic flux density in the air gap for the stator's core surface can be expressed as
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.
Before the optimization was implemented, the magnetic flux density of the MFG was measured, and a validated FE model with errors within 1% was obtained.
r] is remaining magnetic flux density of permanent magnets, [[mu].
After each experiment an average magnetic field strength H and magnetic flux density B, crossing notional horizontal fluid's symmetry axis was calculated.
Sombatsompop [21] originally designed and manufactured a magnetic circular die in a capillary rheometer and studied the effect of the magnetic flux density on the extrudate swell ratio of PS melt.
0 [micro]A dc using digital multimeters to measure the Hall voltages and magnetic flux density B.
The earth has a static electric field of about 130 V/m and a static magnetic flux density (a measure of field strength) of 50 uT (500 mG) at middle latitudes.
Saturation flux density: The magnetic flux density at the point where a further increase in the coil current no longer produces a significant increase in magnetization of the core.
Four sensors in the TCS20 Series provide two different levels of magnetic flux density and two different packages which meet different application requirements and feature both north- and south-pole detection.
Unlike previous work by Sombatsompop (25) using a permanent magnetized die having a constant magnetic flux density (126 m Tesla) to monitor the changes in the overall swelling of the polystyrene extrudate, this present work investigated the extrudate swell ratio and melt velocity of the PS melt for different positions across the die diameter, and the magnetic flux density could also be varied, as a result of use of nonpermanent magnetized (electro-magnetized) die.

Site: Follow: Share:
Open / Close