German Mining Operations in Serbia

1919 Scientific American  
SCIENTIFIC AMERICAN SUPPLEMENT NQ 2263 317 E and I the indication of the voltmeter and ammeter re spectively. If the numerical value of W is the same as the product of the numerical value of E and I then of course the power factor is unity or 100%. If a
doi:10.1038/scientificamerican05171919-317asupp fatcat:u2oyfi6gtrfynbunqt7dgo3t2u