Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Electric Flux01:15

Electric Flux

The concept of flux describes how much of something goes through a given area. More formally, it is the dot product of a vector field within an area. For a better understanding, consider an open rectangular surface with a small area that is placed in a uniform electric field. The larger the area, the more field lines go through it and, hence, the greater the flux; similarly, the stronger the electric field (represented by a greater density of lines), the greater the flux. On the other hand, if...
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
Action Potential: Phases of Stimulation01:28

Action Potential: Phases of Stimulation

The action potential is a complex electrical event that occurs in excitable cells, such as neurons and muscle cells. It consists of several distinct phases, each with specific characteristics.
Resting Phase:
In this phase, the cell's membrane is at its resting potential, typically around -70 millivolts (mV) for neurons. Inside the cell, there is a higher concentration of potassium ions (K+) and a lower concentration of sodium ions (Na+). Voltage-gated sodium channels are closed, and...
Insulation Coordination01:23

Insulation Coordination

Insulation coordination is the process of matching electric equipment's insulation strength with protective device characteristics to protect the equipment against expected overvoltages. This selection is based on engineering judgment and cost. Equipment can generally withstand short-duration high transient overvoltages, but repeated tests with identical waveforms can yield inconsistent results. As a result, standard impulse voltage waveforms are used for testing, defined by specific times for...
Generator Voltage Control01:21

Generator Voltage Control

Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand, use...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Reducing the Delay in the Diagnosis of Bipolar Disorder: A Qualitative Study.

Health expectations : an international journal of public participation in health care and health policy·2025
Same author

Highly dynamic gamma-ray emissions are common in tropical thunderclouds.

Nature·2024
Same author

Effect of powder oxidation on the impact toughness of electron beam melt Ti-6Al-4V.

Acta materialia·2024
Same author

The Case of Mr. Whitman.

Illinois and Indiana medical and surgical journal·2023
Same author

THE EFFECT OF DIFFERENT INORGANIC NITROGEN SOURCES AND PLANT AGE ON THE COMPOSITION OF BLEEDING SAP OF PHASEOLUS VULGARIS.

The New phytologist·2022
Same author

Duodenal volvulus: a rare cause of small bowel obstruction.

Annals of the Royal College of Surgeons of England·2021

Video Experimental Relacionado

Updated: Jul 13, 2026

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
07:51

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

Actividad eléctrica durante las erupciones volcánicas del Monte San Agustín en 2006.

R J Thomas1, P R Krehbiel, W Rison

  • 1Langmuir Laboratory, New Mexico Tech, Socorro, NM 87801, USA. thomas@nmt.edu

Science (New York, N.Y.)
|February 27, 2007
PubMed
Resumen

Las erupciones volcánicas pueden generar rayos a través de dos fases eléctricas distintas: una eyección explosiva de material cargado y subsecuentes descargas en pluma. Estos hallazgos arrojan luz sobre los fenómenos eléctricos volcánicos.

Más Videos Relacionados

In Situ Gas Analysis and Fire Characterization of Lithium-Ion Cells During Thermal Runaway Using an Environmental Chamber
08:42

In Situ Gas Analysis and Fire Characterization of Lithium-Ion Cells During Thermal Runaway Using an Environmental Chamber

Published on: March 31, 2023

Comparative Study of Simulation of Temperature Rise in Ring Main Unit
04:35

Comparative Study of Simulation of Temperature Rise in Ring Main Unit

Published on: July 5, 2024

Videos de Experimentos Relacionados

Last Updated: Jul 13, 2026

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
07:51

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

In Situ Gas Analysis and Fire Characterization of Lithium-Ion Cells During Thermal Runaway Using an Environmental Chamber
08:42

In Situ Gas Analysis and Fire Characterization of Lithium-Ion Cells During Thermal Runaway Using an Environmental Chamber

Published on: March 31, 2023

Comparative Study of Simulation of Temperature Rise in Ring Main Unit
04:35

Comparative Study of Simulation of Temperature Rise in Ring Main Unit

Published on: July 5, 2024

Área de la Ciencia:

  • La geofísica es la geofísica.
  • Ciencias de la atmósfera ciencia atmosférica.
  • Volcanología Volcanología.

Sus antecedentes:

  • Las erupciones volcánicas son fenómenos complejos con aspectos eléctricos poco conocidos.
  • Se ha observado la generación de rayos dentro de las columnas volcánicas, pero no se ha caracterizado completamente.

Objetivo del estudio:

  • Para investigar la actividad eléctrica asociada con las erupciones volcánicas.
  • Para diferenciar los modos y características del rayo durante una erupción.

Principales métodos:

  • Mediciones de tiempo de llegada de radiofrecuencia (RF TOA) utilizadas.
  • Empleó mediciones de interferómetro para analizar descargas eléctricas.
  • Actividad eléctrica observada durante una erupción del Monte San Agustín.

Principales resultados:

  • Identificó dos fases distintas de actividad eléctrica durante la erupción.
  • Fase 1: eyección explosiva de eyecciones volcánicas cargadas positivamente con descargas desorganizadas y relámpagos simples.
  • Fase 2: Relámpago convencional dentro del penacho volcánico, con inicio retrasado y propagación con el viento a la baja, lo que sugiere una carga in situ.

Conclusiones:

  • Las erupciones volcánicas exhiben un comportamiento eléctrico complejo con al menos dos modos distintos.
  • La actividad eléctrica comparte similitudes con los procesos de electrificación de tormentas eléctricas.
  • Se necesita más investigación para comprender completamente los mecanismos de carga in situ en las plumas volcánicas.