单词	standard candle
释义	standard candle noun : candela Example Sentences Recent Examples on the Web Next, the Cepheids are used to calibrate the distances to Type Ia supernovas — even brighter (though rarer) standard candles that can be seen in faraway galaxies. Quanta Magazine, 25 Oct. 2017 Red giants shining at that theoretical limit can thus become standard candles. Leila Sloman, Scientific American, 29 July 2019 White dwarfs at the Chandrasekhar limit are thought to be more or less identical, which is why Type Ia supernovas were considered to be such great standard candles. Quanta Magazine, 31 July 2017 By finding the very brightest red giants in a distant galaxy—the ones that toe this theoretical limit—the team could use them as standard candles to calculate distances and its own H0. Joshua Sokol, Science | AAAS, 19 July 2019 Next the Cepheids are used to calibrate the distances to Type Ia supernovas — even brighter (though rarer) standard candles that can be seen in faraway galaxies. Quanta Magazine, 4 Jan. 2018 So far, standard candles have done it with precisions of 2–3%. Davide Castelvecchi, Scientific American, 23 Apr. 2018 See More Word History First Known Use 1879, in the meaning defined above
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