The Encyclopedia Americana: A Library of Universal Knowledge, Količina 10

action American amount appear applied battery became become body called carried cause cell cent century charge Church circuit conductors connected consists constitution Consult contains continued copper direct early effect electric employed energy engine England English experiment fact feet field force French give given heat important increased industry interest iron Italy king known land later lead less light lines London machine magnetic mass material means measured mechanical ment metal method miles motor nature negative operation original passed period persons plants plate positive practice present pressure produced published represented resistance result speed steam term theory tion United University usually various vote wire York