Use
Nonuniform pentagonal prisms called Pentaprisms are also used in optics to rotate an image through a right angle without changing its chirality.
Read more about this topic: Pentagonal Prism
Famous quotes containing the word use:
“... it is use, and use alone, which leads one of us, tolerably trained to recognize any criterion of grace or any sense of the fitness of things, to tolerate ... the styles of dress to which we are more or less conforming every day of our lives. Fifty years hence they will seem to us as uncultivated as the nose-rings of the Hottentot seem today.”
—Elizabeth Stuart Phelps (1844–1911)