The Laplace pressure is the pressure difference between the inside and the outside of a curved surface that forms the boundary between two fluid regions. The pressure difference is caused by the surface tension of the interface between liquid and gas, or between two immiscible liquids. The Laplace pressure is determined from the Young–Laplace equation given as where and are the principal radii of curvature and (also denoted as ) is the surface tension. Although signs for these values vary, sign convention usually dictates positive curvature when convex and negative when concave.
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| - ضغط لابلاس (ar)
- Laplace pressure (en)
- Pressão de Laplace (pt)
- 拉普拉斯压力 (zh)
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| - ضغط لابلاس (بالإنجليزية: Laplace pressure) هو فرق الضغط بين وسطين ( وسط 1 داخل فقاعة، وسط 2 خارج فقاعة ) الناتج عن تأثير التوتر السطحي على الوسط الملامس للغاز، ويحسب من العلاقة التالية: عندما : يتساوى ,
* Pinside ضغط داخل فقاعة
* Poutside ضغط خارج فقاعة
* (أو ) توتر سطحي
* R نصف قطر الفقاعة ويمكن استنباط هذه المعادلة من معادلة يونغ- لابلاس (ar)
- 拉普拉斯压力（英語：Laplace pressure）是指曲面所受的内外压力差。 这一压力差是由于气/液界面的表面张力引起的。 由杨-拉普拉斯公式推导出拉普拉斯压强为 其中和 是曲率半径，是表面张力系数。这里的数值可正可负，但一般来说，凸面用正曲率半径表示，凹面用负曲率半径表示。拉普拉斯压力一般用于计算如气泡或液滴一类的球状物受到的压力差。 (zh)
- The Laplace pressure is the pressure difference between the inside and the outside of a curved surface that forms the boundary between two fluid regions. The pressure difference is caused by the surface tension of the interface between liquid and gas, or between two immiscible liquids. The Laplace pressure is determined from the Young–Laplace equation given as where and are the principal radii of curvature and (also denoted as ) is the surface tension. Although signs for these values vary, sign convention usually dictates positive curvature when convex and negative when concave. (en)
- A pressão de Laplace é a diferença de pressão entre o lado interno e externo de uma superfície curva. A diferença de pressão é causada pela tensão superficial da interface entre o líquido e o gás. A pressão de Laplace é determinada pela equação de Young–Laplace dada como onde
* Pinside é a pressão interna da bolha ou gota
* Poutside é a pressão externa da bolha ou gota
* (também denotada como ) é a tensão de superfície
* R é o raio da bolha ou gota (pt)
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| - ضغط لابلاس (بالإنجليزية: Laplace pressure) هو فرق الضغط بين وسطين ( وسط 1 داخل فقاعة، وسط 2 خارج فقاعة ) الناتج عن تأثير التوتر السطحي على الوسط الملامس للغاز، ويحسب من العلاقة التالية: عندما : يتساوى ,
* Pinside ضغط داخل فقاعة
* Poutside ضغط خارج فقاعة
* (أو ) توتر سطحي
* R نصف قطر الفقاعة ويمكن استنباط هذه المعادلة من معادلة يونغ- لابلاس (ar)
- The Laplace pressure is the pressure difference between the inside and the outside of a curved surface that forms the boundary between two fluid regions. The pressure difference is caused by the surface tension of the interface between liquid and gas, or between two immiscible liquids. The Laplace pressure is determined from the Young–Laplace equation given as where and are the principal radii of curvature and (also denoted as ) is the surface tension. Although signs for these values vary, sign convention usually dictates positive curvature when convex and negative when concave. The Laplace pressure is commonly used to determine the pressure difference in spherical shapes such as bubbles or droplets. In this case, = : For a gas bubble within a liquid, there is only one surface. For a gas bubble with a liquid wall, beyond which is again gas, there are two surfaces, each contributing to the total pressure difference.If the bubble is spherical and the outer radius differs from the inner radius by a small distance, , we find (en)
- A pressão de Laplace é a diferença de pressão entre o lado interno e externo de uma superfície curva. A diferença de pressão é causada pela tensão superficial da interface entre o líquido e o gás. A pressão de Laplace é determinada pela equação de Young–Laplace dada como onde e são os raios de curvatura e é a tensão superficial. Embora os sinais para esses valores variem, a convenção de sinais normalmente dita que a curvatura é positiva quando côncava e negativa quando convexa. A pressão de Laplace é comumente utilizada para determinar a diferença de pressão em formas esféricas, tais como bolhas ou gotículas. Quando este é o caso os raios de curvatura são iguais ( = ) e a equação simplifica-se a, onde
* Pinside é a pressão interna da bolha ou gota
* Poutside é a pressão externa da bolha ou gota
* (também denotada como ) é a tensão de superfície
* R é o raio da bolha ou gota (pt)
- 拉普拉斯压力（英語：Laplace pressure）是指曲面所受的内外压力差。 这一压力差是由于气/液界面的表面张力引起的。 由杨-拉普拉斯公式推导出拉普拉斯压强为 其中和 是曲率半径，是表面张力系数。这里的数值可正可负，但一般来说，凸面用正曲率半径表示，凹面用负曲率半径表示。拉普拉斯压力一般用于计算如气泡或液滴一类的球状物受到的压力差。 (zh)
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