Chiliogramma -


(Redirectum de Chiliogrammata)

Chiliogramma[1][2][3][4] (-tis vel -tos, n.)[2][4] sive kilogramma[2][5] (-atis, n. vel -ae, f.)[2] est mensura massae et una ex septem principalibus physicae mensuris.




Unum chiliogramma (1 kg) primum fuit massa quae in uno litro aquae apud temperaturam quattuor graduum Celsii continetur. Chiliogramma fuit etiam 1000 grammatum; vice versa, gramma est millensima chiliogrammatis pars).


Ab anno 1889 1 kg erat, per definitionem, massa quae continetur in exemplari prisco apud Officinam Internationale in Pondera et Mensuras Lutetiae sito. Exemplar metallis platino (90%) atque iridio (10%) factum est. In forma cylindri 39 mm alti, cum radio 19.5 mm fusum est.

Definitio chiliogrammatis rite die 20 Maii 2019 mutabitur. Quod non iam est subiecta? de? exemplaro? prisco, sed de constante Planckiano (\({\displaystyle {h}}\)), de celeritate luminis (\({\displaystyle {c}}\)) et de definitione secundi, i.e. cyclis radiationis electronum quae inter status fundamentalis atomi Cs 133 moventur (\({\displaystyle {\Delta \nu }}\)):

\({\displaystyle 1\,{\text{kg}}={\frac {h}{6{,}626\,070\,15\cdot 10^{-34}}}\,{\frac {\text{s}}{{\text{m}}^{2}}}={\frac {299792458^{2}}{9192631770\cdot 6{,}62607015}}\cdot 10^{34}\,{\frac {h\cdot \Delta \nu }{c^{2}}}}\)


  1. Kraus, L. A. (1844), Kritisch-etymologisches medicinisches Lexikon, ed. 3a (Gotingae: Verlag der Deuerlich- und Dieterichschen Buchhandlung).
  2. 2.0 2.1 2.2 2.3 Schlickum, O. (1879), Lateinisch-deutsches Special-Wörterbuch der pharmazeutischen Wissenschaften (Lipsiae: Ernst Günther’s Verlag).
  3. Gabler, E., & T. C. Winkler (1881), Latijnsch-Hollandsch woordenboek over de geneeskunde en de natuurkundige wetenschappen, ed. 2a (Lugduni Batvaorum: A. W. Sijthoff).
  4. 4.0 4.1 Foster, F. D. (1891-1893), An illustrated medical dictionary. Being a dictionary of the technical terms used by writers on medicine and the collateral sciences, in the Latin, English, French, and German languages (Novi Eboraci: D. Appleton and Company).
  5. Maxwell, T., ed. (1890), Terminologia medica polyglotta (Londinii: J. & A. Churchill / Lutetiae: G. Mason / Philadelphiae: P. Blakiston, Son & Co.

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Categoriae: Physica | Unitates physicae

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