a device for detecting and measuring radioactivity, having a crystal scintillator, a photoelectric cell sensitive to the light from scintillations, and an amplifier.
an instrument for detecting and measuring the intensity of high-energy radiation. It consists of a phosphor with which particles collide producing flashes of light that are detected by a photomultiplier and converted into pulses of electric current that are counted by electronic equipment
scintillation counter n.
A device for detecting and counting scintillations produced by ionizing radiation. Also called scintillascope.
[sin-tl-ey-shuh n] /ˌsɪn tlˈeɪ ʃən/ noun 1. the act of scintillating; sparkling. 2. a spark or flash. 3. Astronomy. the twinkling or tremulous effect of the light of the stars. 4. Meteorology. any small-scale twinkling or shimmering of objects that are viewed through the atmosphere, caused by an interception of the observer’s line of view […]
- Sclerosing keratitis
sclerosing keratitis n. Inflammation of the cornea as a complication of scleritis, characterized by opacification of the corneal stroma.
- Sclerosing osteitis
sclerosing osteitis n. A fusiform thickening or increased density of bones. Also called condensing osteitis, Garré’s disease.
noun, plural scleroses [skli-roh-seez] /sklɪˈroʊ siz/ (Show IPA) 1. Pathology. a hardening or induration of a tissue or part, or an increase of connective tissue or the like at the expense of more active tissue. 2. Botany. a hardening of a tissue or cell wall by thickening or lignification. noun (pl) -ses (-siːz) 1. (pathol) […]