| http://www.w3.org/ns/prov#value | - The unique discovery of the present invention is that a low profile prism, or Fresnel biprism, placed in optical contact with a photopolymerizable material will make a small, simple badge that splits an incident laser beam into two beams that will cross to record an interference pattern, or hologram, in the photopolymerizable material; and, that only coherent light, such as from a laser, will prod
|
