With the evolution of ether into air, came space and movement. The movement of vāyu brought forth vibration. The back-and-forth vibrational movement of vāyu introduces friction and with friction comes heat; i.e. fire.
Fire is radiant energy and is active and changeable. It is the source of all transformative processes in the body and is responsible for digestion, absorption and transformation of food into energy. The tanmatra of fire element is Rupa (Vision). Perception of light is carries out by this tanmatra. Fire element is hot, sharp, light, dry and subtle.
The qualities of hot, dry, penetrating and sharp demonstrate the radiant energy of Fire in the body. Skin complexion, eye luster and intelligence are expressions of the elemental energy of Fire. The liver, stomach and the pancreas are the primary sites of the Fire element. The element of Fire brings the qualities of attention, appreciation, recognition, ambition and competitiveness.