Experiments

(a) Determine if the given bar of steel is magnetised. Magnetise it.

(b) Compare the moment of the given magnet after magnetisation (1) by stroking, (2) by the use of an electro-magnet.

(c) Compare the strength of the magnetic field within a soft-iron cylindrical screen with the normal strength of the earth's field.

(d) Determine the moment of the given bar magnet and the horizontal intensity of the earth's magnetic force.

(e) Determine the moment of the given magnetic mass about the given axis, using the known value of the earth's horizontal force.

(f) Lay down on the table the direction of the magnetic meridian.

Enter results thus:

(a) Effect on suspended magnet only visible after five or she reversals of position, isochronous with the time of swing.

(c) Values of n within the cylinder, using the same magnet after the last magnetisation.

Strength of field within : strength without = 49 : 208.

(d) Using the last observations in (b)

(e) A sphere of radius 2.5 cm experimented with.

(f) Show on a sheet of paper lines drawn parallel to the edge of the table and to the direction of the horizontal component of the earth's magnetic force respectively.