Chemijos terminų aiškinamasis žodynas – 2-asis patais. ir papild. leid. – Vilnius: Mokslo ir enciklopedijų leidybos institutas. Kazys Daukšas, Jurgis Barkauskas, Vitas Daukšas. 2003.
selenium — /si lee nee euhm/, n. Chem. a nonmetallic element chemically resembling sulfur and tellurium, occurring in several allotropic forms, as crystalline and amorphous, and having an electrical resistance that varies under the influence of light.… … Universalium
Selenium — (pronEng|səˈliniəm) is a chemical element with the atomic number 34, represented by the chemical symbol Se, an atomic mass of 78.96. It is a nonmetal, chemically related to sulfur and tellurium, and rarely occurs in its elemental state in nature … Wikipedia
Selenium dioxide — Selenium dioxide … Wikipedia
Selenium — Se*le ni*um, n. [NL., from Gr. selh nh the moon. So called because of its chemical analogy to tellurium (from L. tellus the earth), being, as it were, a companion to it.] (Chem.) A nonmetallic element of the sulphur group of atomic number 34,… … The Collaborative International Dictionary of English
Selenium — An essential mineral that is a component of a key antioxidant enzyme, glutathione reductase, in tissue respiration. Deficiency of selenium causes Keshan disease, a fatal form of cardiomyopathy (disease of the heart muscle) first observed in… … Medical dictionary
selenium dioxide — noun : a poisonous white crystalline compound SeO2 that sublimes to a yellow green vapor, that is made by oxidation of selenium with nitric acid or air or by dehydration of selenious acid, and that is used chiefly as a catalyst and an oxidizing… … Useful english dictionary
selenium — noun Etymology: New Latin, from Greek selēnē moon, from selas brightness Date: 1818 a photosensitive element that occurs in both crystalline and amorphous forms, is obtained chiefly as a by product in copper refining, and is used especially in… … New Collegiate Dictionary
selenium — [sɪ li:nɪəm] noun the chemical element of atomic number 34, a grey crystalline non metal with semiconducting properties. (Symbol: Se) Origin C19: mod. L., from Gk selēnē moon … English new terms dictionary
selenium — /səˈliniəm/ (say suh leeneeuhm) noun a non metallic element chemically resembling sulphur and tellurium, occurring in several allotropic forms (crystalline, amorphous, etc.), and having an electrical resistance which varies under the influence of …
Photophone — The Photophone was invented jointly by Alexander Graham Bell and his assistant Sarah Orr on February 19, 1880. Bell believed the photophone was his most important invention. The device allowed for the transmission of sound on a beam of light. On… … Wikipedia
