photocatalyst pho·to·cat·a·lyst (fō’tō-kāt’l-ĭst)
A substance that helps bring about a light-catalyzed reaction, such as chlorophyll in photosynthesis.
[foh-toh-kuh-tal-i-sis] /ˌfoʊ toʊ kəˈtæl ɪ sɪs/ noun, plural photocatalyses [foh-toh-kuh-tal-i-seez] /ˌfoʊ toʊ kəˈtæl ɪˌsiz/ (Show IPA). Chemistry. 1. the acceleration or retardation of the reaction rate in chemical reactions by light. /ˌfəʊtəʊkəˈtælɪsɪs/ noun (pl) -ses (-siːz) 1. the alteration of the rate of a chemical reaction by light or other electromagnetic radiation
[foh-toh-kath-ohd] /ˌfoʊ toʊˈkæθ oʊd/ noun 1. a , typically of a cesium or sodium compound, having the property of emitting electrons when activated by light or other radiation. /ˌfəʊtəʊˈkæθəʊd/ noun 1. a cathode that undergoes or is used for photoemission
- Photo cd
multimedia, specification, standard, storage, graphics A standard for storing photographic images on CD-ROM, produced by Kodak. Kodak Photo CD page (http://kodak.com/digitalImaging/aboutPhotoCD/aboutPCD.shtml). (1995-12-12)
[foh-toh-sel] /ˈfoʊ toʊˌsɛl/ noun, Electronics. 1. a solid-state device that converts light into electrical energy by producing a voltage, as in a , or uses light to regulate the flow of current, as in a : used in automatic control systems for doors, lighting, etc. /ˈfəʊtəʊˌsɛl/ noun 1. a device in which the photoelectric or […]