St. John, Thomas M. (Thomas Matthew), b. 1865 · New York, T. M. St. John · leaf 53
little resistance to the sled,while ashes offer a great resist-ance. All substances do not allow theeledtric current to pass throughthem with the same ease. Eventhe liquid in a cell tends to holdthe current back and offiirs in-ternal resistance. The variouswires and in.struments conuecftedto a cell… … Fig. 64. ance. (See Study,etc.) 69. Unit of Resistance; The Ohm is the name givento the unit of resistance. About g ft. g in. of Xo. 30copper wire, or 39 feet i in. of Xo. 24 copper wire, willmake a fairly accurate ohm. Resistance coils, having carefully measured resistances,are made for standards.…
Electricity
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer01inte-209-89.webp)
