As exercise physiologist Harry Pino tells io9, muscle cells don't actually convert into fat, which is a common myth. What really happens is that the muscle cells - which are completely different than fat cells - become smaller, because now you donât have a demand of power and strength - theyâre not growing, he says.
The composition of two reflections across two parallel lines is equivalent to a translation. The translation vector is perpendicular to the lines. The length of the translation vector is twice the distance between the lines. The composition of two reflections across two intersecting lines is equivalent to a rotation. The center of rotation is the intersection of the lines. The angle of rotation is twice the measure of the angle formed by the lines.
In both cases the angle of incidence equals the angle of reflection at the point that the light ray strikes the surface. Light is also reflected when it is incident on a surface or interface between two different materials such as the surface between air and water, or glass and water.Each time a ray of light strikes a boundary between two materials-air/glass or glass/water-some of the light is reflected. Light reflected from a metal surface with angle of incidence i equal to the angle of reflection i'. The dashed line (normal) is perpendicular to the surface. Figure. 2 Light reflection from a) smooth surface (specular reflection) and b) rough surface (diffuse reflection).