fluxului

Fluxului is the genitive/dative form of the Romanian noun flux, which denotes movement, flow, or passage. In Romanian, flux is masculine; its definite forms are fluxul (nominative), fluxului (genitive/dative), fluxul, fluxuri, fluxurilor, etc. The term appears in many technical and everyday phrases, for example fluxului magnetic or fluxului electric, where it means “the magnetic/electric flux.” The word derives from Latin fluxus, meaning a flowing.

In science and mathematics, flux refers to the quantity that passes through a surface. The flux of a vector field F through a surface S is defined by the surface integral ∬S F · n dS, where n is the unit normal to the surface. The concept is orientation dependent: reversing the surface normal changes the sign of the flux. Electric flux and magnetic flux are particular cases, describing how electric or magnetic fields pass through a surface. The electric flux unit is commonly expressed as volt-meters (V·m) or, equivalently, newton square meters per coulomb (N·m²/C); the magnetic flux unit is the weber (Wb). Gauss’s law relates electric flux to enclosed charge, while Ampère’s law and Faraday’s law relate magnetic flux to current and changing electric fields.

Beyond physics, flux can denote a rate of flow in fluids or gases (volumetric flux, measured in cubic meters per second) and, in information or traffic contexts, the rate of data or people moving through a channel (data flux, traffic flux). In Romanian usage, fluxului often appears in technical literature to indicate “the flux of X through Y” and in general phrases describing flow or passage.