tommelfingerregel

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Danish

Strømmens retning er den blå pil, magnetfeltets, de røde.

Etymology

tommelfinger +‎ regel

Noun

tommelfingerregel

  1. rule of thumb
  2. (chiefly definite, physics) a mnemonic for determining the direction of the magnetic field brought about by a current
    • 2009, Dan Ch Christensen, Naturens tankelæser, Museum Tusculanum Press, →ISBN, page 621:
      Det er dog ikke Ørsted, der har formuleret den tommelfingerregel, skolebørn i dag kan lire af efter et kvarters fysikundervisning.
      (please add an English translation of this quotation)
    • 2015, David Favrholdt, Filosoffen Niels Bohr, Informations Forlag, →ISBN:
      Læseren husker måske det, vi kalder tommelfingerreglen: “Hold højre hånd langs ledningen med fingrene i strømmens retning og håndfladen mod kompasset. Nålens nordpol vil da bevæge sig til den side, hvor tommelfingeren er.
      (please add an English translation of this quotation)


Declension

Norwegian Bokmål

Norwegian Wikipedia has an article on:
Wikipedia no

Etymology

From tommelfinger +‎ regel.

Noun

tommelfingerregel m (definite singular tommelfingerregelen, indefinite plural tommelfingerregler, definite plural tommelfingerreglene)

  1. a rule of thumb

References

Norwegian Nynorsk

Etymology

From tommelfinger +‎ regel.

Noun

tommelfingerregel m (definite singular tommelfingerregelen, indefinite plural tommelfingerreglar, definite plural tommelfingerreglane)

  1. a rule of thumb

References