Related Experiment Video

Updated: Oct 15, 2026

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry
07:17

Non-equilibrium Microwave Plasma for Efficient High Temperature Chemistry

Published on: August 1, 2017

Entropy flow of a laser beam

Howard M Wiseman

    Optics Letters
    |October 13, 2026
    PubMed

    More Related Videos

    Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods09:17

    Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

    Published on: April 23, 2018

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation10:52

    Direct Imaging of Laser-driven Ultrafast Molecular Rotation

    Published on: February 4, 2017

    Related Concept Videos

    Steady Flow of a Fluid Stream01:27

    Steady Flow of a Fluid Stream

    Consider a control volume, such as a pipe with solid boundaries, through which fluid flows and changes direction due to the impulse exerted by the resulting force from the pipe walls. In steady flow, the mass of fluid entering the control volume at a given time, t, with velocity v1, is equal to the mass leaving after infinitesimal time dt, with velocity v2.
    During this process, the momentum of the fluid within the control volume remains constant over the time interval dt. By applying the...
    Energy Conservation and Bernoulli's Equation01:16

    Energy Conservation and Bernoulli's Equation

    Applying the conservation of energy principle or the work-energy theorem to an incompressible, inviscid fluid in laminar, steady, irrotational flow leads to Bernoulli's equation. It states that the sum of the fluid pressure, potential, and kinetic energy per unit volume is constant along a streamline.
    All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...
    Standard Entropy Change for a Reaction03:00

    Standard Entropy Change for a Reaction

    Entropy is a state function, so the standard entropy change for a chemical reaction (ΔS°rxn) can be calculated from the difference in standard entropy between the products and the reactants.
    Poiseuille's Law and Reynolds Number01:10

    Poiseuille's Law and Reynolds Number

    Any fluid in a horizontal tube can flow due to pressure differences—fluid flows from high to low pressure. The flow rate (Q) is the ratio of pressure difference and resistance through a horizontal tube. The greater the pressure difference, the higher the flow rate. The flow resistance is expressed as:
    Bernoulli's Equation00:59

    Bernoulli's Equation

    In the middle of the nineteenth century, it was observed that two trains passing each other at a high relative speed get pulled towards each other. The same occurs when two cars pass each other at a high relative speed. The reason is that the fluid pressure drops in the region where the fluid speeds up. As the air between the trains or the cars increases in speed, its pressure reduces. The pressure on the outer parts of the vehicles is still the atmospheric pressure, while the resultant...
    Bernoulli's Equation for Flow Normal to a Streamline01:16

    Bernoulli's Equation for Flow Normal to a Streamline

    Bernoulli's equation for flow normal to a streamline explains how pressure varies across curved streamlines due to the outward centrifugal forces induced by the fluid's curvature. The pressure is higher on the inner side of the curve, near the center of curvature, and decreases outward to balance these centrifugal forces.
    The pressure difference depends on the fluid's velocity and radius of curvature. The pressure variation is minimal in flows with nearly straight streamlines. However, the...