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In uniform circular motion, the particle executing circular motion has a constant speed, and the circle is at a fixed radius. However, not all circular motion occurs at a constant speed. A particle can travel in a circle and speed up or slow down, showing an acceleration in the direction of motion. In that case, the motion is called non-uniform circular motion, and an additional acceleration is introduced, which is in the direction tangential to the circle. 
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Fenómenos dinámicos: gotas que caminan y orbitan en órbita.

Y Couder1, S Protière, E Fort

  • 1Matières et Systèmes Complexes, Université Paris 7 Denis Diderot, 75005 Paris, France.

Nature
|September 9, 2005
PubMed
Resumen
Este resumen es generado por máquina.

Las pequeñas gotas pueden rebotar indefinidamente en una superficie líquida oscilante. Al aumentar la aceleración, estas gotas rebotantes hacen la transición a "caminantes", exhibiendo dualidad partícula-onda y autopropulsión.

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Área de la Ciencia:

  • Dinámica de fluidos La dinámica de fluidos.
  • El fenómeno de las ondas es un fenómeno de ondas.
  • Física no lineal de la física no lineal.

Sus antecedentes:

  • Pequeñas gotas pueden sostener rebotes indefinidos en un baño de líquido oscilante.
  • Investigaciones anteriores se centraron en las oscilaciones verticales para un rebote estable.

Objetivo del estudio:

  • Para investigar el comportamiento de las gotas rebotantes en el aumento de las aceleraciones de oscilación.
  • Para explorar la transición de las gotas rebotantes en "caminantes" autopropulsados.

Principales métodos:

  • Oscilación vertical de un baño líquido que contiene pequeñas gotas.
  • Aumento sistemático de la aceleración de la oscilación.
  • Observación y análisis del comportamiento de las gotas y las interacciones de las ondas superficiales.

Principales resultados:

  • Las gotas rebotantes pasan al movimiento horizontal de "caminar" a aceleraciones más altas.
  • Los caminantes exhiben la dualidad partícula-onda, autopropulsándose a través de la interacción con sus propias ondas capilares.
  • Las interacciones entre dos caminantes pueden conducir a movimientos orbitales.

Conclusiones:

  • Se demuestra un nuevo tipo de estado localizado y autopropulsado (caminante).
  • El fenómeno pone de relieve la interacción entre la dinámica de las gotas y los patrones de onda emergentes.
  • Este trabajo abre caminos para el estudio de comportamientos complejos en sistemas de fluidos.