What is capillarity? How does it affect the movement of a fluid inside a pipette

In our bio lab experiment, we stand a pipette of small internal diameter in a beaker of water then gradually the water level in the tube rose up against gravity. How did that happen? Does it also have any relation to the size of the diameter of the pipette?

Pls explain. Thanks :D

Water molecules are attracted to each other (cohesion), but they can be more attracted to other substances, like glass (adhesion). So if the diameter of a glass pipette is small enough, the molecules will "crawl" up the glass, dragging other water molecules with them. Capillary action won't occur so easily within a large-diameter pipette because the weight of the column of water will be greater than the adhesion power...