| 单词 | cosmic ray |
| 释义 | cosmic raySEE SYNONYMS FOR cosmic ray ON THESAURUS.COM noun Physics.a radiation of high penetrating power that originates in outer space and consists partly of high-energy atomic nuclei. Origin of cosmic rayAn Americanism dating back to 1920–25 Words nearby cosmic raycosmic, cosmic background radiation, cosmic dust, cosmic microwave background, cosmic noise, cosmic ray, cosmic rays, cosmic string, cosmic web, cosmid, cosmine Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for cosmic ray
Scientific definitions for cosmic raycosmic ray A ray of radiation of extraterrestrial origin, consisting of one or more charged particles such as protons, alpha particles, and larger atomic nuclei. Cosmic rays entering the atmosphere collide with atoms, producing secondary radiation, such as pions, muons, electrons, and gamma rays. Cosmic rays (and secondary radiation) can be easily seen in a cloud chamber. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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