Prisms (E+50)

  E+50+0 Total internal reflection: 45 deg-45 deg-90 deg prism using arc lamp.
  E+50+5 Four-prisms, same index of refraction, different angles, using laser.
  E+50+10 Eight-prisms, different index of refraction, same angle, using laser.
  E+50+15 Blackboard optics: Light source and lucite prism.
  E+50+20 Refraction of white light by prism using arc lamp.
  E+50+25 Light from arc lamp enters direct view prism emerges as spectrum.
  E+50+30 Dove prism to erect projected images using arc lamp.
  E+50+35 Binoculars and Porro prisms to show.
  E+50+40 Applet: The Prism