Intensive

Intensive magnitude is indivisible quantity as degree. It has no parts and cannot be added. Examples: temperature (21°C + 10°C ≠ 30°C when mixed), pressure, density, pain, color. The degree is reflected into itself — the whole in a single point. Intensive magnitude arises from extensive magnitude: the derivative (rate) of an extensive magnitude is intensive (velocity = dx/dt). It in turn strikes back into extensive magnitude: high temperature can produce extensive expansion. In thermodynamics: intensive quantities are independent of system size.