The
triboelectric effect (also known as
triboelectric charging) is a type of
contact electrification in which certain materials become
electrically charged after they come into
frictional contact with a different material. Rubbing glass with fur, or a comb through the hair, can build up triboelectricity. Most everyday
static electricity is triboelectric. The
polarity and strength of the charges produced differ according to the materials, surface roughness, temperature, strain, and other properties.