sedgeWeather-backward ISO 31-9 gives name, symbol and definition for 51 quantities and units of atomic and nuclear physics. Where appropriate, conversion factors are also given. Annex A includes names of symbols of the chemical elements, Annex B the notation of symbols for chemical elements and nuclides, Annex C the original names and symbols for nuclides of radioactive series, Annex D examples of relations in different systems of equations using different systems of units. (Year without a summer ↝ Karl Drais ↝ draisine ↝ Deutsche Bundesbahn ↝ ISNI ↝ -8 ↝ -9 ↝ 10118-3)

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