Complex sentence: In computer graphics, Lambertian reflection is often used as a model for diffuse reflection, and is calculated by taking the dot product of the surface's normalized normal vector\\ mathbf and a normalized vector\\ mathbf pointing from the surface to the light source.
Split into simpler sentences: In computer graphics, Lambertian reflection is often used as a model for diffuse reflection. The reflection is calculated by taking the dot product of the surface's normalized normal vector\\ mathbf and a normalized vector\\ mathbf pointing from the surface to the light source.