Apparatus for the Measurement of Susceptibility of Solids by Gouyâ€™s Method for Classroom Experiment

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Apparatus for the Measurement of Susceptibility of Solids by Gouyâ€™s Method for Classroom Experiment

Order Code: 55539A

SPECIFICATION

Inthe Gouy’s method of susceptibility measurement, the solid sample in the form of a long cylinder (area of cross section A) is hung from the pan of a balance and is placed such that one end of the sample is between the pole-pieces of the magnet (field H ) and the other one is outside the field. The force exerted on the sample by the inhomogeneous magnetic field is obtained by measuring the apparent change ( Dm ) in the mass of the sample. The susceptibility c is given by
c= 2Dmg/AH2
If the sample is in the form of powder, it is filled in a long nonmagnetic tube which is then suspended from the pan of the balance.

The set up consists of the following:

Scientific Balance
- Capacity : 200 gms
- Sensitivity : 1/10 mg. by vernier
- Beam : Hard Bronze/ Brass
- Arrestment : Circular, falling away type
- Air Damping : Very quick and positive,
- beam coming to rest in 2-3 sec
- Chainomatic Device : A gold plated chain is suspended from the beam with its other end screwed on the Device rotating drum on which a scale graduated from 0 to 10 div each division representing 1mg is installed. By the movement of this scale before a vernier, reading upto 1/10th mg is taken
Sample in the form of a long rod: Set of samples
Electromagnet
- Pole Pieces : 75mm tappered to 25mm
- Mag. Field : 20KG mm airgap
- Energising Coils : Two of approx. 13W each
- Power : 0-90Vdc, 3A, for coils in series 0-45Vdc, 6A, for coils in parallel
Constant Current Power Supply
Gaussmeter

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