A normal derivative is a directional derivative taken in the direction normal (that is, orthogonal) to some surface in space, or more generally along a normal vector field orthogonal to some hypersurface. See for example Neumann boundary condition. If the normal direction is denoted by, then the directional derivative of a function ƒ is sometimes denoted as . In other notations
Read more about this topic: Directional Derivative
Famous quotes containing the words normal and/or derivative:
“It is normal to give away a little of one’s life in order not to lose it all.”
—Albert Camus (1913–1960)
“When we say “science” we can either mean any manipulation of the inventive and organizing power of the human intellect: or we can mean such an extremely different thing as the religion of science the vulgarized derivative from this pure activity manipulated by a sort of priestcraft into a great religious and political weapon.”
—Wyndham Lewis (1882–1957)