[noun] ・one of a set of explicit or understood regulations or principles governing conduct or procedure within a particular area of activity. ・control of or dominion over an area or people. ・the normal or customary state of things.
[verb] ・exercise ultimate power or authority over (an area and its people). ・pronounce authoritatively and legally to be the case. ・make parallel lines across (paper).
The right-handed screw rule states that if you wrap your right hand around a straight wire with your thumb pointing in the direction of the electric current, your fingers will point in the direction of the magnetic field. It also states that if you wrap your right hand around a coil(solenoid)with your fingers in the direction of the electric current, your thumb will point in the direction of the magnetic lines in the coil. の訳を教えてもらえますか?
Fleming’s left-hand rule states that if you hold your left hand with the thumb, index finger and middle finger all at right angles to each other so as the index finger points in the direction of the field(north to south)and the middle finger in the direction of the current, the thumb will point in the direction of the force. の訳を教えてもらえますか?