Capillary action

principle

A liquid rising in narrow channels.

Where it is used

• Wick — is used in. Fuel rises up the wick by capillary forces.
• Fountain pen — is used in. Ink flows through the nib’s capillaries.
• Quill pen — is used in. Ink is held in the shaft by capillary action.
• Heat pipe — is used in. The liquid returns along the wick by capillary action.
• Sponge — is used in. It absorbs by capillary action.
• Towel — is used in. Absorption.
• Superabsorbent — is used in. Absorption.
• Chromatography — is used in. Paper chromatography.
• Pregnancy test — is used in. Capillary flow of the liquid.

Open Evothings