Where did the last name Lytle come from? Where did the last name Kerr come from?  English and Scottish: topographic name for someone who lived by  a patch of wet ground overgrown with brushwood, northern Middle  English kerr (Old Norse kjarr). A legendâ¦ grew up that  the Kerrs were left-handed, on theory that the name is derived from  Gaelic cearr 'wrong-handed', 'left-handed'.
Flux is the presence of a force field in a specified physical medium, or the flow of energy through a surface. In electronics, the term applies to any electrostatic field and any magnetic field.
Imagine an electric field E passing through a surface. Consider an infinitesimal area (dA) on that surface across which E remains constant. Also assume that the angle between E and dA is i. The electric flux is defined as EdAcos(i). E and dA are vectors. Flux is the dot product of E and dA.