A piece of magnetized steel used as an indicator on the dial of a compass and in magnetic and electrical apparatus.
磁针
Example sentencesExamples
In 1837 Cooke and Wheatstone developed the electric telegraph which used an electric current to move magnetic needles and thus transmit messages in code.
In particular he carried out many experiments including some on ballistics, some on the pendulum and a study of the variation of the magnetic needle.
A 14 mm wide channel formed by two glass plates was made along the axis of the magnetic gradient within which a magnetic needle (a Teflon rod 3 cm long and 2 mm diameter) was floated.
Definition of magnetic needle in US English:
magnetic needle
nounmaɡˌnedik ˈnēdl
A piece of magnetized steel used as an indicator on the dial of a compass and in magnetic and electrical apparatus.
磁针
Example sentencesExamples
In particular he carried out many experiments including some on ballistics, some on the pendulum and a study of the variation of the magnetic needle.
A 14 mm wide channel formed by two glass plates was made along the axis of the magnetic gradient within which a magnetic needle (a Teflon rod 3 cm long and 2 mm diameter) was floated.
In 1837 Cooke and Wheatstone developed the electric telegraph which used an electric current to move magnetic needles and thus transmit messages in code.