Normal in Geometric Optics
The normal is the line perpendicular to the surface of an optical medium. In reflection of light, the angle of incidence and the angle of reflection are respectively the angle between the normal and the incident ray and the angle between the normal and the reflected ray.
Read more about this topic: Normal (geometry)
Famous quotes containing the words normal and/or geometric:
“Nothing is poetical if plain daylight is not poetical; and no monster should amaze us if the normal man does not amaze.”
—Gilbert Keith Chesterton (1874–1936)
“New York ... is a city of geometric heights, a petrified desert of grids and lattices, an inferno of greenish abstraction under a flat sky, a real Metropolis from which man is absent by his very accumulation.”
—Roland Barthes (1915–1980)