Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 31
Fig. 17. 20 ELECTRICITY AND MAGNETISM CHAP. north, but on suspending it with its other face upwards it will makethe same angle on the other side of magnetic north. The direction ofthe mnfnetic axis and of the magnetic meridian will then be found bybisecting the angle between the two position* of… … Fig. 18. Fig. 19. prismatic compas.s (Fig. 19) may be usefully employed to find approxi-mately the direction of the magnetic meridian. Some distant objectin a known geographical direction is sighted by means of the slot S andthe wire S. By means of the right-angled prism shown in section atP the…
Electricity · Magnetism
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
