Electrical resistivity is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that
Lightning is an example of plasma present at Earth's surface. Typically, lightning discharges 30,000 A at up to 100 MV, and emits light, radio waves, and X-rays. Plasma temperatures in lightning might approach 30,000 K (29,700 °C; 53,500 °F), and electron densities may exceed 1024 m−3.
Metal
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A metal is a material that, when polished or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. These properties are all associated with having electrons availa
Electrical resistivity and conductivity
…gap. Since there are no available states near the Fermi level, and the electrons are not freely movable, the electronic conductivity is very low. A metal consists of a lattice of atoms, each with an outer shell of electrons that freely dissociate from their parent atoms and travel through the lattice…
Iron, shown here as fragments and a 1 cm3 cube, is an example of a chemical element that is a metal.
Metal in the form of a gravy boat made from stainless steel, an alloy largely composed of iron, chromium and nickel
Gallium crystals
Battery demonstration unit for conducting polymers built by nobel laureate Alan MacDiarmid