Assertion: magnetism's effect | /r/HasProperty | reciprocal
Facets:
Source sentences:
text: Ørsted did not fully understand his discovery, but he observed the effect was reciprocal: a current exerts a force on a magnet, and a magnetic field exerts a force on a current.
text: The effect is reciprocal, and when a piezoelectric material is subjected to an electric field, a small change in physical dimensions takes place.