Assertion: coil galvanometer | /r/HasProperty | devised by lord kelvin
Facets:
value: as a telegraphic signalling instrument
type: PURPOSE
Source sentences:
text: This fact led to the introduction of the movable coil galvanometer which was first devised by Lord Kelvin as a telegraphic signalling instrument but subsequently modified by A. d'Arsonval and others into a laboratory galvanometer (fig.