Marble Electrical Conductivity

Conductivity is a measure of how well a material conducts an electric current.

Marble electrical conductivity.

The symbol most commonly used for resistivity is sigma σ. For example copper is a conductor and glass is an insulator. Try a piece of unfinished marble perhaps under your counter top. Thermal conductivity of cork is 0 04 w mk.

Electric conductivity may be represented by the greek letter σ sigma κ kappa or γ gamma. Or the marble is damp and that will make it feel cold as water is a good conductor. To gain more information regarding the electrical properties of marble measurements of dielectric con stant power factor and resistivity were made on specimens which were available from quarries in vermont alabama and georgia. Thermal conductivity of marble is 2 3 w mk.

Conductivity is the reciprocal of resistivity. 3 4 temperature of marble is measured during heat gain 18 4 1 heat loss of tile 20 4 2 heat loss of marble 21 4 3 heat loss of window glass 22 4 4 heat loss of mild steel 23 4 5 heat loss of aluminium 24 4 6 heat loss of perspex 25 4 7 heat gain of tile 27 4 8 heat gain of marble 28. Data on the electrical properties of marble are meager. Conductivity is expressed in units that are the quotient of conductance siemens and length.

Personally i never noticed the effect you are talking about. A conductor is a material that does conduct electricity. Such data as are published vary widely. An insulator is a material that does not conduct electricity.

Table of resistivity and conductivity at 20 c.