Flux is either of two separate simple and ubiquitous concepts throughout physics and applied In all cases the frequent symbol j, (or J) is used for flux, q for the physical quantity that flows, t for time, and A for area. These identifiers will be. In electromagnetism, electric flux is the measure of flow of the electric field through a given area . Thus, the SI base units of electric flux are kg·m3·s−3·A−1. The symbol you linked denotes the integral around any closed path (a loop or a surface). Flux is typically denoted by the greek letter phi. You could argue that B indicates better the strength of a magnetic field than does the 'magnetic field strength' H! Baker Hughes has broadened its pipeline service portfolio to include circumferential magnetic flux leakage MFL inspection technology, which enables pipeline operators to identify anomalies in pipeline long seams and more effectively manage the risk associated with cracks in long seam welds and the overall integrity of their pipeline assets. Effective length is usually quoted in millimetres. As before, the surface is assumed to be flat, and the flow is assumed to be everywhere perpendicular to it. Wikipedia indefinitely semi-protected pages Articles containing Ancient Greek-language text Articles containing Greek-language text Wikipedia articles needing clarification from October All articles with unsourced statements Articles with unsourced statements from February Rather than defining the vector flux directly, it is often more intuitive to state some properties about it. An Etymological Dictionary of Modern English. Here the expression "flux of" indicates a mathematical operation and, as can be seen, the result is not necessarily a "flow", since nothing actually flows along electric field lines. The result of this operation is called the surface integral of the flux. This is the basis for inductors and many electric generators. The flux of the Poynting vector through a surface is the electromagnetic power , or energy per unit time , passing through that surface. Posts are automatically archived after 6 months. The current in a winding produces magneto-motive force -. It is sometimes also used for a surface integral over a closed surface. Flux, then, is a measure of the number of these lines - the total amount of magnetism. Flux is typically denoted by the greek letter phi. The divergence theorem states that the net outflux through a closed surface, in other words the net outflux from a 3D region, is found by adding the local net outflow from each point in the region which is expressed by the divergence.