Quote: a line of magnetic force is the line always tangent to a magnetic needle; along which a moving wire does not generate electricity; shown by iron filings

Quotation

A line of magnetic force may be defined to be that line which is described by a very small magnetic needle, when it is so moved in either direction correspondent to its length, that the needle is constantly a tangent to the line of motion; or, it is that line along which, it a transverse wire be moved in either direction, there is no tendency to the formation of an electric current in the wire, whilst if moved in any other direction there is such a tendency. The direction of these lines about and between ordinary magnets is easily represented in a general manner by the well-known use of iron filings.   Google-1   Google-2

Published before 1923

Related Topics

Topic: electromagnetic field (63 items)