Paper, 'On the principal electric time-constant of a circular disk' by Horace Lamb

Description

Lamb writes: 'The time-constant for currents of any normal type in a given conductor is the time in which free currents of that type fall to 1/e of their original strength. In strictness there are for any conductor an infinite series of time-constants, corresponding to the various normal types, but in such a case as that of a coil of wire one of these is very great in comparison with the rest, which belong to types in which the current is in opposite directions in different parts of a section of the wire. And in all cases the time-constant corresponding to the most persistent type which can be present under given circumstances is, of course, the one which is most important from an experimental point of view.'

Annotations in pencil and ink.

Subject: Physics

Received 29 March 1887. Read 21 April 1887.

A version of this paper was published in volume 42 of the Proceedings of the Royal Society as 'On the principal electric time-constant of a circular disk'.

Reference number

PP/10/36

Earliest possible date

1887

Physical description

Ink and graphite pencil on paper

Page extent

17 pages

Format

Manuscript