Assertion: galvanometer | /r/HasProperty | strong
Facets:
value: in some cases
type: TEMPORAL
Source sentences:
text: In some types the pen is continuously pressed against the paper, so the galvanometer must be strong enough to move the pen against the friction of the paper.
text: In some cases (the classical polygraph of movies or the electroencephalograph), the galvanometer is strong enough to move the pen while it remains in contact with the paper; the writing mechanism may be a heated tip on the needle writing on heat-sensitive paper or a fluid-fed pen.