flux

n. flow; flowing; fluidity, continual change; instability; material for soldering

v. melt; weld, fuse; flow

This article is about the concept of flux in science and mathematics. For other uses of the word, see flux (disambiguation).In the various subfields of physics, there exist two common usages of the term flux, both with rigorous mathematical frameworks. In the study of transport phenomena (heat transfer, mass transfer and fluid dynamics), flux is defined as the amount that flows through a unit area per unit time, the volumetric flow rate. Flux in this definition is a vector. In the field of electromagnetism, flux is usually the integral of a vector quantity over a finite surface. The result of this integration is a scalar quantity. The magnetic flux is thus the integral of the magnetic vector field B over a surface, and the electric flux is defined similarly. Using this definition, the flux of the Poynting vector over a specified surface is the rate at which electromagnetic energy flows through that surface. Confusingly, the Poynting vector is sometimes called the power flux, which is an example of the first usage of flux, above. It has units of watts per square metre (W/m2)
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Noun
1. the rate of flow of energy or particles across a given surface
(hypernym) rate
(hyponym) neutron flux
2. a flow or discharge
(synonym) fluxion
(hypernym) flow, flowing
(derivation) liquefy, liquify
3. a substance added to molten metals to bond with impurities that can then be readily removed
(hypernym) chemical
(hyponym) soldering flux
(derivation) blend, mix, conflate, commingle, immix, fuse, coalesce, meld, combine, merge
4. excessive discharge of liquid from a cavity or organ (as in watery diarrhea)
(hypernym) pathology
5. a state of uncertainty about what should be done (usually following some important event) preceding the establishment of a new direction of action; "the flux following the death of the emperor"
(synonym) state of flux
(hypernym) state
6. the lines of force surrounding a permanent magnet or a moving charged particle
(synonym) magnetic field, magnetic flux
(hypernym) field, field of force, force field
(hyponym) magnetosphere
7. (physics) the number of flux changes per unit area
(synonym) flux density
(hypernym) concentration, density, denseness, compactness
(classification) physics, physical science, natural philosophy
8. in constant change; "his opinions are in flux"; "the newness and flux of the computer industry"
(hypernym) change
Verb
1. move or progress freely as if in a stream; "The crowd flowed out of the stadium"
(synonym) flow
(hypernym) move
(hyponym) ripple, ruffle, riffle, cockle, undulate
(derivation) fluxion
2. become liquid or fluid when heated; "the frozen fat liquefied"
(synonym) liquefy, liquify
(hypernym) change integrity
(hyponym) condense, distill, distil
(derivation) fluxion
(classification) physics, physical science, natural philosophy
3. mix together different elements; "The colors blend well"
(synonym) blend, mix, conflate, commingle, immix, fuse, coalesce, meld, combine, merge
(hypernym) change integrity
(hyponym) gauge

n. flood, rise, incoming tide; flow, current

n. flush; flux, flow