複ふくプリズムじ字FuriganaMeanings1nounbiprismTechnical term in optics; a prism with two slightly angled halves used to produce interference fringes.複ふくプリズムを用もちいて光ひかりの干かん渉しょう縞じまを観かん察さつした。We observed light interference fringes using a biprism.
