Name: capillary action in narrow spaces
Uploaded: 2025-02-13T15:43:08.000Z
Duration: 1 min 19 s
Channel: JoVE

La capilaridad se refiere al movimiento del líquido en espacios estrechos, impulsado por la tensión superficial y las fuerzas adhesivas entre el líquido y las superficies cercanas.
Tal movimiento se observa comúnmente en tubos delgados, materiales porosos y otros espacios pequeños.
Cuando se coloca un tubo estrecho, llamado tubo capilar, en un líquido, el nivel del líquido puede subir o bajar dependiendo de la interacción de las fuerzas.
Cuando las fuerzas adhesivas entre el líquido y el tubo son más fuertes que las fuerzas cohesivas dentro del líquido, el líquido se eleva, lo que se denomina ascenso capilar.
Por otro lado, si las fuerzas cohesivas son más fuertes, el líquido cae, lo que resulta en una depresión capilar.
Varios factores que influyen en la altura a la que se mueve el líquido en un tubo capilar son el ángulo de contacto entre el tubo y el líquido, la tensión superficial del líquido, la densidad del líquido, el radio del tubo y el efecto de la gravedad.
La capilaridad es importante tanto en los procesos naturales como en la tecnología, ya que ayuda con el transporte de agua en las plantas, la absorción de líquidos en materiales porosos y tecnologías como los dispositivos microfluídicos.

capilaridad en fluidos

La capilaridad describe el movimiento de un líquido en espacios pequeños sin que actúen fuerzas externas sobre él. La capilaridad es impulsada por la tensión superficial y las interacciones adhesivas entre el líquido y las superficies sólidas circundantes. Este efecto se observa a menudo en tubos estrechos, materiales porosos y partículas finas. La tensión superficial es crucial para la capilaridad. Es el resultado de las fuerzas de cohesión entre las moléculas del líquido en el límite líquido-aire, que forman una capa que resiste las fuerzas externas. Cuando el tubo capilar se coloca en un líquido, el nivel del líquido cambia en función de las interacciones adhesivas entre el líquido y la superficie del tubo. Si estas fuerzas adhesivas son mayores que las fuerzas de cohesión del líquido, el líquido sube en el tubo, lo que se conoce como ascenso capilar. Si las fuerzas de cohesión son más fuertes, el nivel del líquido desciende, lo que se conoce como depresión capilar. La altura a la que sube o baja el líquido en un tubo capilar está influenciada por varios factores, entre ellos la tensión superficial y la densidad del líquido, el ángulo de contacto entre el líquido y el tubo, la aceleración gravitacional y el radio del tubo. La capilaridad interviene en muchos procesos naturales e industriales. Afecta el agua del suelo y el movimiento de nutrientes, lo cual es esencial para el crecimiento de las plantas. En materiales porosos, afecta la absorción y retención de líquidos. La capilaridad también se utiliza en tecnologías como la impresión por inyección de tinta y la microfluídica.

Capilaridad en fluidos

La capilaridad se refiere al movimiento del líquido en espacios estrechos, impulsado por la tensión superficial y las fuerzas adhesivas entre el líquido y las superficies cercanas.
Tal...

Education

Educación

JoVE Core

Civil Engineering

Ingeniería Civil

Unit 1

Unidad 1

Fluid Properties

Propiedades de los fluidos

KEY TERMS AND CONCEPTS

TÉRMINOS Y CONCEPTOS CLAVE

Capillarity in Fluid

capillary action in narrow spaces

Capillary action is the movement of liquid through narrow spaces without any outside force. It depends on surface tension and adhesion between the liquid and nearby solid surfaces. This effect is common in narrow tubes, porous materials, and fine particles.

Surface tension comes from cohesive forces between liquid molecules at the liquid-air boundary. These forces create a thin skin that resists outside pressure. When a capillary tube is placed in a liquid, the liquid level changes because of its interaction with the tube surface.

If adhesion is stronger than cohesion, the liquid rises in the tube. This is called capillary rise. If cohesion is stronger, the liquid level drops. This is called capillary depression.

The amount a liquid rises or falls depends on several factors. These include surface tension, liquid density, the contact angle with the tube, gravitational acceleration, and the tube radius. Capillarity matters in nature and in technology. It helps move water and nutrients in soil for plant growth, affects liquid absorption and retention in porous materials, and is used in inkjet printing and microfluidics.

Capillary Action in Narrow Spaces

characteristics of fluids

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capillarity in fluid

Capillary action is the movement of liquid through narrow spaces without any outside force. It depends on surface tension and adhesion between the liquid and nearby solid surfaces. This effect is common in narrow tubes, porous materials, and fine particles. Surface tension comes from cohesive forces between liquid molecules at the liquid-air boundary. These forces create a thin skin that resists outside pressure. When a capillary tube is placed in a liquid, the liquid level changes because of...

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key terms and concepts

Learn how capillary action moves liquid through narrow spaces using surface tension and adhesion, and see its role in plants, porous materials, and printing.

Capillary Action in Narrow Spaces | JoVE K12

JoVE Core Civil Engineering provides a foundational exploration of essential construction materials in civil engineering, focusing on bricks, stones, steel, wood, and concrete through easy-to-understand animated videos. This collection covers the properties, manufacturing processes, and practical applications of these materials. Additionally, the accompanied science-in-action videos demonstrate the research experiments performed in laboratories.

civil engineering

Capillary Action in Narrow Spaces

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