An instrument for counting or recording ionizing events. Frequently preceded by a defining word, as Geiger counter, scintillation counter. Also attrib…
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| 单词 | θ79543 |
| 释义 | the world > matter > physics > atomic nucleus > measurement of ionizing radiation > [noun] > instrument for counting or recording (10) counter1924 An instrument for counting or recording ionizing events. Frequently preceded by a defining word, as Geiger counter, scintillation counter. Also attrib… point-counter1925 an early version of the Geiger counter in which discharges occur between positively charged chamber walls and a central, earthed, metal point. tube counter1930 the now usual form of Geiger counter, as contrasted with the point-counter. radiation counter1934 = counter, n.2 3b. ratemeter1941 an instrument which measures the rate at which a particular event happens; spec. one which displays or records the rate of occurrence of pulses in… Subcategories:— rate of (2) — stable radiation count (1) — restricting discharge of Geiger counter (2) |
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