Frequently Asked Questions | Goldanalytix

Density:

• Density of a body describes its mass in relation to its volume

• "Pseudo-density" can be calculated from the dimensions and weight of the object at hand

• Each material has a specific density

Conductivity:

• Conductivity is the ability of a substance to transfer energy (e.g. electricity, heat)

• It is measured in megasiemens per metre

• Our devices measure conductivity using inductive eddy current measurement

Magnetism:

• Diamagnetism = the occurrence of a magnetic field (magnetisation), when an external magnetic field is applied to a substance, whereby the magnetisation opposes the external field. Summary: diamagnetic materials are repelled by the magnet.

• Paramagnetism = form of magnetism in which a substance shows no measurable magnetic moment in the absence of an external magnetic field, but acquires a magnetisation in the presence of an external field. Summary: Paramagnetic materials are slightly attracted to the magnet.

• Ferromagnetism = By applying an external magnetic field, the elementary magnets align themselves in the same direction. The ferromagnetic material itself becomes a magnet. Summary: Ferromagnetic substances are attracted to the magnet.

Susceptibility properties:

• Describe the ratio of the magnetisation of a material to the magnetic field strength

• This so-called magnetic susceptibility can be measured with the help of a magnetic balance