Usage of isotopes

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Nonradioactive isotopes

  • de-tuning of sonic speeds in sliding interfaces to reduce drag. See Friction.
  • ...

Stable isotopes (ratio in earth's crust):

  • 10B 19.9% -- 11B 80.1%
  • 12C 98.9% -- 13C 1.1%
  • 14N 99.634% -- 15N 0.366%
  • 16O 99.762% -- 17O 0.038% -- 18O 0.2%
  • 19F 100%
  • 27Al 100%
  • 28Si 92.23% -- 29Si 4.67% -- 30Si 3.1%
  • 31P 100%
  • 32S 95.02% -- 33S 0.75% -- 34S 4.21% -- 36S 0.02%
  • 35Cl 75.77% -- 37Cl 24.23%
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