Definition of delta rays in English:

delta rays

Syllabification: del·ta rays

noun

Physics
  • Rays of low penetrative power consisting of slow electrons or other particles ejected from atoms by the impact of ionizing radiation.
    More example sentences
    • These are all negative particles which, like the delta rays turn to the left.
    • The fraction due to delta rays and capacitive coupling has been increased to 24% for the first stack and to 19% for the other stacks.
    • They suggest that delta ray action rarely produces DSBs at locations away from a primary ion track, and that the average energy per delta ray has little biological importance.

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Word of the day milord
Pronunciation: mɪˈlɔːd
noun
used to address an English nobleman