From Wikipedia, the free encyclopedia
Atmosphaera (litteris atm notata) est unitas pressionis, eadem ac 101325 pascal vel 1.01325 bar. Etiam atmosphaera normalis vel exemplaris appellari potest. Haec est fere pressio atmosphaerae telluris in maris aequore. Ante annum 1982 haec unitas erat pars definitionis statûs normalis.
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