Ampère's rules

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The Ampere's rules are two of André-Marie Ampère specified rules of thumb for the deflection of the north pole of a magnetic needle in the vicinity of a straight current-carrying conductor , and thus the direction of the lines of force of the head surrounding the magnetic field . The Ampère rules do the same as the corkscrew rule , which is better known today.

Rule of swimmers : An observer swimming inside the conductor in the direction of the current and turning his face to the magnetic needle observes a deflection of the north pole to the left.

This is synonymous with the

Rule of thumb : If you place your right hand flat on the conductor so that the current flows from your wrist to your fingertips, and if you turn your palm towards the magnetic needle, the north pole is deflected in the direction of the outstretched thumb.

literature

  • Johannes Kunsemüller (Hrsg.): Meyers Lexicon of technology and exact natural sciences . tape 1 . Bibliographisches Institut, Mannheim 1970, p. 116 .
  • L. Bergmann, Cl. Schaefer: Textbook of Experimental Physics . 4th edition. tape 2 : Electricity . Walter de Gruyter & Co., Berlin 1961, p. 167 .