| http://www.w3.org/ns/prov#value | - The component B; of the stray magnetism which was formerly parallel to the direction 0! the earth's field will now be at right angles thereto and consequently it will exert an influence or turning moment upon the card magnets 12, 13 such as to deflect them from the position that they would ordinarily occupy in the earth's field, with the result that the card will not indicate true east or west as
|
