1 results containing "Scientific illustrations--1830-1860."
[Apparatus used to convert electrical energy into mechanical rotation, the basis of dynamos, using bar magnet, beaker of mercury, and current carrying wire]
[published between 1839 and 1855] | 1 print
Illus. in QC503.F21 [Rare Book RR] | LC-USZ62-95340 (b&w film copy neg.)