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Related Concept Videos

Radial System Protection01:23

Radial System Protection

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Radial systems employ time-delay overcurrent relays to reduce load interruptions. When a fault occurs, the nearest breaker opens first, while upstream breakers remain closed due to longer delay settings. This approach ensures minimal disruption to the rest of the system.
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Partial Fractions01:28

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A partial fraction is a component of a rational expression represented as the sum of simpler fractions. When a rational function is expressed as a ratio of two polynomials, it can often be decomposed into a sum of fractions whose denominators are simpler polynomials, typically linear or irreducible quadratic factors. This process is called partial fraction decomposition, and it is used to simplify complex expressions for integration, solving equations, or analysis.Partial fraction decomposition...
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The radial pulse, located at the wrist, is often the preferred site for assessing peripheral pulse because of its accessibility and dependability. The process of determining the radial pulse involves several steps:
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Unless individual gases chemically react with each other, the individual gases in a mixture of gases do not affect each other’s pressure. Each gas in a mixture exerts the same pressure that it would exert if it were present alone in the container. The pressure exerted by each individual gas in a mixture is called its partial pressure.
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The partial pressure of a gas is a measure of the thermodynamic activity of the gas's molecules. The pressure that a gas would create if it occupied the total volume available is called the gas's partial pressure. If two or more gases are mixed together in a container, the molecules move randomly and collide with each other, causing them to reach thermal equilibrium. When the gases have the same temperature, their molecules have the same average kinetic energy. Thus, each gas obeys the...
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Measurement of X-ray Beam Coherence along Multiple Directions Using 2-D Checkerboard Phase Grating
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Partially coherent sources with radial coherence.

G Piquero, M Santarsiero, R Martínez-Herrero

    Optics Letters
    |May 16, 2018
    PubMed
    Summary
    This summary is machine-generated.

    Partially coherent light sources with radial coherence were developed. These sources maintain their coherence properties during propagation, offering new possibilities for optical applications.

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    Area of Science:

    • Optics and Photonics
    • Physical Sciences

    Background:

    • Partially coherent light sources are crucial in various optical applications.
    • Understanding and controlling the coherence properties of light is essential for advanced optical systems.

    Purpose of the Study:

    • To propose and characterize partially coherent sources exhibiting radial coherence.
    • To investigate the propagation behavior of these sources in the paraxial approximation.
    • To experimentally validate the proposed source and its coherence properties.

    Main Methods:

    • Theoretical determination of the modal structure of radially coherent sources.
    • Derivation of conditions for maintaining radial coherence during paraxial propagation.
    • Experimental synthesis of a radially coherent source using a simple setup.
    • Coherence characterization using a Young interferometer.

    Main Results:

    • Partially coherent sources with radial coherence were successfully proposed.
    • Conditions for preserving radial coherence during paraxial propagation were established.
    • The angular dependence of the correlation function was shown to be preserved upon propagation.
    • Experimental synthesis and validation of a radially coherent source were achieved.

    Conclusions:

    • Radially coherent sources offer unique properties for light manipulation.
    • These sources maintain coherence characteristics during propagation, enabling new applications.
    • Experimental validation confirms the theoretical predictions and feasibility of these sources.