The Grossenhain Shuttle Driver. 1 figure. 5025
II. ELECTRICITY, MAGNETISM, ETC.--The Electro-Magnetic
Apparatus of Dr. Pacinotti. 8 figures. The Pacinotti
electro-magnetic machine of 1860.--The Elias
electro-motor of 1842. 5015
Scientific American Supplement, No. 315, January 14, 1882 · 第 9 / 122 题