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Videos de Conceptos Relacionados

Magnetic Field Of A Current Loop01:16

Magnetic Field Of A Current Loop

Consider a circular loop with a radius a, that carries a current I. The magnetic field due to the current at an arbitrary point P along the axis of the loop can be calculated using the Biot-Savart law.
Force On A Current Loop In A Magnetic Field01:17

Force On A Current Loop In A Magnetic Field

Magnetic forces on wires carrying current are most frequently applied in motors. A DC motor is a device that converts electrical energy into mechanical work. In motors, wire loops are enclosed in a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate. The direction of the current is reversed once the loop's surface area is lined up with the magnetic field, causing a constant torque on the loop. During the process, commutators...
Torque On A Current Loop In A Magnetic Field01:13

Torque On A Current Loop In A Magnetic Field

The most common application of magnetic force on current-carrying wires is in electric motors. These consist of loops of wire, which are placed between the magnets with a magnetic field. When current flows through the loops, the magnetic field applies torque, which causes the shaft to rotate, thus converting electrical energy to mechanical energy.
Consider a rectangular current-carrying loop containing N turns of wire, placed in a uniform magnetic field. The net force on a current-carrying loop...
Significance of Displacement Current01:28

Significance of Displacement Current

A displacement current is analogous to a real current in Ampère's law, participating in Ampère's law the same way as the usual conduction current. However, it is produced by a changing electric field. Displacement current is defined in terms of a time-varying electric field, and also has an associated displacement current density. By adding a term accounting for displacement current, Maxwell modified the existing Ampère's law, which is now called generalized Ampère's law.
Inductor in an AC Circuit01:16

Inductor in an AC Circuit

The basic components of an inductor are coils or loops of wire that are either wound around a hollow tube former or a ferromagnetic material (iron-cored) to increase their inductive value or inductance. When a voltage is applied across an inductor's terminals, a magnetic field is created, where the inductor stores its energy. The inductor's own self-induced or back emf value controls the growth of the current flowing through it.  This back emf voltage is proportional to the rate of variation of...
Electrical Current01:10

Electrical Current

Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836). An ampere is the...

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Video Experimental Relacionado

Updated: Jul 11, 2026

Functional Assessment of Intestinal Permeability and Neutrophil Transepithelial Migration in Mice using a Standardized Intestinal Loop Model
09:24

Functional Assessment of Intestinal Permeability and Neutrophil Transepithelial Migration in Mice using a Standardized Intestinal Loop Model

Published on: February 11, 2021

Las intrusiones de invierno de la corriente del bucle.

R L Molinari, S Baig, D W Behringer

    Science (New York, N.Y.)
    |November 4, 1977
    PubMed
    Resumen

    La Corriente de lazo en el Golfo de México se extendió inusualmente hacia el norte durante tres inviernos consecutivos. Este hallazgo se basa en el análisis de datos de temperatura de la superficie del mar procedentes de satélites y de buques.

    Área de la Ciencia:

    • Oceanografía La oceanografía es la oceanografía.
    • Ciencias del clima Ciencias del clima Ciencias del clima

    Sus antecedentes:

    • La corriente de bucle es una corriente oceánica importante en el Golfo de México.
    • Comprender su variabilidad es crucial para predecir el clima regional y los ecosistemas marinos.

    Objetivo del estudio:

    • Para analizar la reciente extensión hacia el norte de la corriente de lazo.
    • Para documentar un patrón inusual de intrusión de la corriente de bucle en los últimos tres inviernos.

    Principales métodos:

    • Se utilizaron datos de temperatura de la superficie del mar de observaciones satelitales.
    • Datos incorporados de la temperatura subsuperficial recopilada por los buques.
    • Se analizaron los datos de temperatura para rastrear el límite norte de la corriente de bucle.

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    Principales resultados:

    • La corriente de bucle se extendió significativamente más al norte de lo registrado anteriormente.
    • Esta intrusión extendida se produjo durante los últimos tres inviernos consecutivos.
    • Las anomalías de temperatura observadas indican un desplazamiento persistente hacia el norte.

    Conclusiones:

    • El comportamiento reciente de la corriente de bucle sugiere un cambio notable en su patrón típico.
    • Se necesita más investigación para comprender los impulsores y las implicaciones de esta intrusión extendida hacia el norte.
    • Este fenómeno puede tener impactos significativos en los patrones climáticos del Golfo de México y la vida marina.