1. Eyes: Capillary action allows the drainage of the tear fluid that is constantly produced in the eyes. In the inner corner of the eyes, behind the eyelids, two canaliculi having a tiny diameter, known as the lacrymal ducts, are present. Their openings can be seen with naked eyes within the lacrymal sacs when the eyelids are inverted.
Capilary are responsible for flowing of ink to the tips of fountain pen nibs from a reservoir or cartridge inside the pen.
Capilary action in plants.water is reached from roots to upper part.
Capilary action in soil to is responsible to reach ground water from wet areas to dry areas.

1.Heat pipe with longitudinal capillary structure
2.Supply of coolant
3.Electric contact using porous solid
4.Fluid distribution via capillaries.

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