Related Experiment Video

Updated: Jul 6, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
11:03

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids

Published on: December 4, 2017

The low-frequency sound speed of fluid-like gas-bearing sediments

Preston S Wilson, Allen H Reed, Warren T Wood

    The Journal of the Acoustical Society of America
    |April 10, 2008
    PubMed

    More Related Videos

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques10:53

    Simultaneous Measurement of Turbulence and Particle Kinematics Using Flow Imaging Techniques

    Published on: March 12, 2019

    A Stable Phantom Material for Optical and Acoustic Imaging04:54

    A Stable Phantom Material for Optical and Acoustic Imaging

    Published on: June 16, 2023

    Related Concept Videos

    Speed of Sound in Solids and Liquids00:51

    Speed of Sound in Solids and Liquids

    Most solids and liquids are incompressible—their densities remain constant throughout. In the presence of an external force, the molecules tend to restore to their original positions, which is only possible because the constituents interact. The interactions help the constituents pass on information about external disturbances, like sound waves. Therefore, sound waves travel faster through these media. Compared to solids, the constituents in a liquid are less tightly bound. Thus, sound waves...
    Deriving the Speed of Sound in a Liquid01:09

    Deriving the Speed of Sound in a Liquid

    As with waves on a string, the speed of sound or a mechanical wave in a fluid depends on the fluid's elastic modulus and inertia. The two relevant physical quantities are the bulk modulus and the density of the material. Indeed, it turns out that the relationship between speed and the bulk modulus and density in fluids is the same as that between the speed and the Young's modulus and density in solids.
    The speed of sound in fluids can be derived by considering a mechanical wave propagating...
    Speed of Sound in Gases01:08

    Speed of Sound in Gases

    The speed of sound in a gaseous medium depends on various factors. Since gases constitute molecules that are free to move, they are highly compressible. Hence, sound waves travel slowly through gases. Thermodynamics helps us understand the relationship between pressure, volume, and temperature of gases, thus, the speed of sound in an ideal gas can be determined using the laws of thermodynamics. At the same time, Newton's laws of motion and the continuity equation of fluid dynamics also come in...
    Sound Waves01:01

    Sound Waves

    Sound waves can be thought of as fluctuations in the pressure of a medium through which they propagate. Since the pressure also makes the medium's particles vibrate along its direction of motion, the waves can be modeled as the displacement of the medium's particles from their mean position.
    Sound waves are longitudinal in most fluids because fluids cannot sustain any lateral pressure. In solids, however, shear forces help in propagating the disturbance in the lateral direction as well. Hence,...
    Viscosity01:17

    Viscosity

    When water is poured into a glass, it falls freely and quickly, whereas if honey or maple syrup is poured over a pancake, it flows slowly and sticks to the surface of the container. This difference in the flow of different kinds of liquids arises due to the fluid friction between the liquid layers and the liquid and the surrounding material. This property of fluids is called fluid viscosity. In this example, water has a lower viscosity than honey and maple syrup.
    The SI unit of viscosity is...
    Sound as Pressure Waves01:17

    Sound as Pressure Waves

    Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
    The pressure fluctuation depends on the difference in displacements between the successive points in the...