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.
Heat flux and radiative flux are specific cases of energy flux that involve the rate of transfer of heat and radiation (photons) respectively. Energy flux is a function of time as well as area, and has units of J/m 2 /s or W/m 2. It is sometimes also referred to as flux density. In more technical terms, flux density is defined as the energy travelling over an area perpendicular to the flow of energy divided by time and by area. Four types of energy fluxes for ideal (flat and smooth) surfaces have been identified so far.