单词	massless
释义	massless adjective mass·​less ˈmas-ləs  : having no mass a massless particle Example Sentences Recent Examples on the Web According to the Standard Model, two gluons, the massless particles that glue together atomic nuclei, easily interact with each other to double their own number, becoming four gluons. Katie Mccormick, Quanta Magazine, 1 Aug. 2022 Theory predicted that neutrinos would be completely massless. Joanna Thompson, Scientific American, 15 June 2022 Electromagnetic force was well explained by quantum field theory, which pictured attraction or repulsion as an exchange of massless particles—photons—able to travel across unlimited distances. Andrew Crumey, WSJ, 3 June 2022 One main challenge is physics: Nothing can travel faster than the speed of light—300 million meters per second for massless particles. Steven Carlini, Forbes, 18 May 2022 Weinberg showed that special relativity and quantum mechanics put striking restrictions on the interactions of massless particles. Quanta Magazine, 12 Aug. 2021 A few months ago, Chalmers published new research about massless structural batteries to power electric cars. Caroline Delbert, Popular Mechanics, 20 May 2021 Scientists have made a massless structural battery 10 times better than before. Caroline Delbert, Popular Mechanics, 22 Mar. 2021 Difficulty #2: despite our theoretical hopes, gravitons (and photons, and gluons) are all probably massless. Ethan Siegel, Forbes, 9 Apr. 2021 See More Word History First Known Use 1879, in the meaning defined above
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