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Related Concept Videos

Spherical Coordinates01:23

Spherical Coordinates

Spherical coordinate systems are preferred over Cartesian, polar, or cylindrical coordinates for systems with spherical symmetry. For example, to describe the surface of a sphere, Cartesian coordinates require all three coordinates. On the other hand, the spherical coordinate system requires only one parameter: the sphere's radius. As a result, the complicated mathematical calculations become simple. Spherical coordinates are used in science and engineering applications like electric and...
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Pore Size Distribution

In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio.
Adequate...
Gauss's Law: Spherical Symmetry01:26

Gauss's Law: Spherical Symmetry

A charge distribution has spherical symmetry if the density of charge depends only on the distance from a point in space and not on the direction. In other words, if the system is rotated, it doesn't look different. For instance, if a sphere of radius R is uniformly charged with charge density ρ0, then the distribution has spherical symmetry. On the other hand, if a sphere of radius R is charged so that the top half of the sphere has a uniform charge density ρ1 and the bottom half has a uniform...
Spherical and Cylindrical Capacitor01:26

Spherical and Cylindrical Capacitor

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In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
Radius of Gyration of an Area01:12

Radius of Gyration of an Area

The second moment of area, also known as the moment of inertia of area, is a crucial factor in understanding an object's resistance against bending deformation, or stiffness. To accurately estimate the second moment of area along any axis, one needs to concentrate all areas associated with that object into a thin strip, which should be placed parallel to that particular axis.

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Scattering And Absorption of Light in Planetary Regoliths
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Spherical particle sizing based on the VanderLugt correlator.

M S Marshall, R E Benner

    Applied Optics
    |August 19, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new flexible particle sizing architecture using a VanderLugt correlator and multiplexed matched spatial filter was developed. This system accurately sizes spherical and nonspherical particles, even at high concentrations.

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    Area of Science:

    • Optics and Photonics
    • Particle Characterization
    • Image Processing

    Background:

    • Accurate particle sizing is crucial in various scientific and industrial applications.
    • Traditional particle sizing methods can be limited in scope or complexity.

    Purpose of the Study:

    • To introduce a novel, flexible architecture for particle sizing.
    • To demonstrate the efficacy of the VanderLugt correlator with a multiplexed matched spatial filter for particle analysis.

    Main Methods:

    • Development of a flexible optical architecture.
    • Implementation of a VanderLugt correlator.
    • Utilizing a multiplexed matched spatial filter.
    • Testing with opaque spherical particle projections.

    Main Results:

    • The architecture demonstrated simplicity and potential utility.
    • Successful particle sizing was achieved for spherical particles.
    • The system showed capability for handling both spherical and nonspherical particles.
    • Potential for high particle concentration analysis was indicated.

    Conclusions:

    • The proposed architecture offers a versatile approach to particle sizing.
    • The system's design is adaptable for various particle types and concentrations.
    • Further research can explore advanced applications of this flexible system.