The absolute measurement of capacity
Book details
- Title
- The absolute measurement of capacity
- Publication year listed
- 1905
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
The absolute measurement of capacity
Year: 1905
Maxwell's bridge method was employed, a rotating commutator of special design being used to charge and discharge the condenser. The first portion of the paper is devoted to a consideration of the formula for the capacity, the object being to make the correction factor as small as possible. The usual stroboscopic device for maintaining a constant speed was abandoned; in its stead the observer at the galvanometer telescope controlled the speed of the driving motor by observations of the galvanometer deflection, the number of revolutions of the commutator and the beats of a chronometer being simultaneously recorded on a chronograph. The average variation in speed was about 1 part in 25,000, and the error in the result due to such variat