EntityQ6874638· pop 5· linked from 35 articlesmirror galvanometerSign in to savetype of ammeterConnectionssubmarine communications cableEntityInternational Standard Book NumberEntitymirrorEntityelectric currentEntitylaserEntitydigital object identifierEntityWilliam Thomson, 1st Baron KelvinEntityHermann von HelmholtzEntityCartesian coordinate systemEntityammeterEntityseismometerEntitygalvanometerEntitybibcodeEntityelectronic amplifierEntitymonocleEntitysemiconductor waferEntitysemiconductor device fabricationEntityJohann Christian PoggendorffEntitytransatlantic telegraph cableEntityJacques-Arsène d'ArsonvalEntityCategoriesGalvanometersOptical instruments