Assertion: magnetic permeability | /r/CapableOf | make in magnetic shielding
Facets:
value: to block magnetic fields
type: PURPOSE
Source sentences:
text: Invented in 1914 by physicist Gustav Elmen at Bell Telephone Laboratories, it is notable for its very high magnetic permeability, which makes it useful as a magnetic core material in electrical and electronic equipment, and also in magnetic shielding to block magnetic fields.