单词 | fundamental quantity |
例句 | This is the only available direct measurement of this fundamental quantity. Observation of the hyperfine spectrum of antihydrogen : Nature : Nature Research 2017-08-01T04:00:00Z The rate at which the universe is expanding is a fundamental quantity with which to test cosmological theory. Speedy universe expansion challenges Einstein’s theory 2017-01-26T05:00:00Z As Moseley put it, here was proof that “there is in the atom a fundamental quantity, which increases by regular steps as we pass from one element to the next.” The Evolution of the Periodic System 2011-01-21T23:45:05.210Z From the frequency of these waves there is deduced a simple relation connected with a fundamental quantity which increases in units from one element to the next. A Brief Account of Radio-activity This fundamental quantity, first referred to as atomic number in 1920 by Ernest Rutherford, who was then at the University of Cambridge, is now identified as the number of protons in the nucleus. The Evolution of the Periodic System 2011-01-21T23:45:05.210Z |
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