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Related Concept Videos

Electric Charges01:11

Electric Charges

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From lightning during thunderstorms to electronic devices, the phenomenon of electromagnetism is all around us. The electromagnetic force is one of the four fundamental forces of nature. It has been known to humanity in various forms for thousands of years. For example, the ancient Greek philosopher Thales of Miletus recorded his experiments on static electricity using amber and fur in the sixth century BC.
The English physicist William Gilbert studied the phenomenon of static electricity in...
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Electric Field of a Continuous Line Charge01:19

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In physics, symmetry in a system means that something in the considered system remains unchanged due to a specific operation to which it is subjected. For example, consider a horizontal square. The square looks the same if its right and left sides are interchanged. Hence, it is symmetric under a right-left interchange.
In calculations of electric fields, symmetry is of great use. For example, while calculating electric fields of continuous charge distributions.
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Electric Potential Energy of Two Point Charges01:12

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The electric potential energy of a test charge in a uniform eclectic field can be generalized to any electric field produced by static charge distribution. Consider a positive test charge in an electric field produced by another static positive charge. If the test charge is moved away from the static charge, then the electric field does the positive work on the test charge, and the electric potential energy of the test charge decreases as it moves away from the static charge. Here the electric...
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Sources and Properties of Electric Charge01:15

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All objects we see around us consist of atoms, which combine to form molecules. The lightest element in the universe is hydrogen, and a hydrogen atom consists of a positively charged proton and a negatively charged electron. The magnitude of charge that a proton and an electron carry are the same, and it is the fundamental unit of charge. In SI units, it is 1.602 times 10-19 coulomb.
Most atoms additionally constitute another fundamental particle, the neutron. It carries no electrical charge. A...
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Electric Field of Two Equal and Opposite Charges01:30

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Atoms generally contain the same number of positively and negatively charged particles, protons, and electrons. Hence, they are electrically neutral. However, the centers of the positive and negative charges do not always coincide. In such a scenario, the electric field of an atom may not be zero.
A separation of the positive and negative charges can lead to a weak, remnant effect of the positive and negative charges. The expectation is that the more the distance between the positive and...
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Electric Field of a Charged Disk01:23

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The simplest case of a surface charge distribution is the uniformly charged disk. Calculating its electric field also helps us calculate the electric field of a large plane of charge.
The system's symmetry is in the cylindrical directions across the plane of the charge. As a result, the electric fields created by various surface charge elements nullify each other in the direction parallel to the surface. Thereby, the resulting electric field is perpendicular to the plane. Since the disk is...
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Author Spotlight: Development of an Automated Camera-Based System for Real-Time Blast Overpressure Monitoring and TBI Risk Assessment in Military Training
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Electrical Weapon Charge Delivery With Arcing.

Bryan D Chiles, Max H Nerheim, Michael A Brave

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    Summary
    This summary is machine-generated.

    Modern Conducted Electrical Weapons (CEWs) effectively deliver electrical charges across significant arcing distances, even through clothing. The X26P model demonstrated the greatest arcing capability, ensuring reliable performance in law enforcement applications.

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    Area of Science:

    • Forensic Science
    • Biomedical Engineering
    • Law Enforcement Technology

    Background:

    • Conducted Electrical Weapons (CEWs) are widely adopted by law enforcement for their effectiveness in reducing injuries and fatalities.
    • CEW probe-to-skin contact can be compromised by bulky clothing, necessitating reliable performance through arcing to complete the electrical circuit.

    Purpose of the Study:

    • To evaluate the capability of modern CEWs to deliver pulse charges across typical arcing distances.
    • To assess the impact of clothing on CEW effectiveness and identify potential performance limitations.

    Main Methods:

    • Testing of TASER® CEW models X26E (open-loop) and X2/X26P (closed-loop) using a custom air-gap fixture.
    • Evaluation of raw and normalized charge delivery according to ANSI-CPLSO-17 standards for 5 units of each model.

    Main Results:

    • All tested CEW models met ANSI-CPLSO-17 standards at maximum arcing lengths.
    • The X26P CEW exhibited the most significant arcing gap capability.
    • The X2 CEW's normalized output charge at 10-20 mm arc lengths surpassed some older X26E models.

    Conclusions:

    • Modern CEWs with stabilized closed-loop output feedback (X2 and X26P) offer superior output consistency under arcing conditions.
    • These advanced CEWs ensure reliable electrical charge delivery, even when direct skin contact is not achieved.
    • The findings support the continued use and development of CEWs as a less-lethal force option.