Assertion: magnetic field's strength | /r/HasProperty | calibrated
Facets:
value: from their own known internal constants
type: OTHER
Source sentences:
text: They are also rated as "absolute" if the strength of the field can be calibrated from their own known internal constants or "relative" if they need to be calibrated by reference to a known field.
text: They are also rated as "absolute" if the strength of the field can be calibrated from their own known internal constants or "relative" if they need to be calibrated by reference to a known field.