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Videos de Conceptos Relacionados

Energy Associated With a Charge Distribution01:21

Energy Associated With a Charge Distribution

The work done to bring a charge through a distance r is given by the potential difference between the initial and the final position. To assemble a collection of point charges, the total work done can be expressed in terms of the product of each pair of charges divided by their separation distance, defined with respect to a suitable origin. Solving this expression gives the energy stored in a point charge distribution.
Light as Energy01:35

Light as Energy

The energy required to carry out photosynthesis is light— typically electromagnetic radiation from the sun. The range of all possible wavelengths is known as the electromagnetic spectrum.
Photons
A photon is a discrete electromagnetic particle or bundle of energy. Photons are characterized by their frequency, wavelength, and amplitude, similar to the properties of a wave. Waves with higher frequencies transmit more energy and have shorter wavelengths than longer wavelengths that transmit less...
Energy Carried By Electromagnetic Waves01:22

Energy Carried By Electromagnetic Waves

Anyone who has used a microwave oven knows there is energy in electromagnetic waves. Sometimes, this energy is obvious, such as in the summer sun's warmth. At other times, it is subtle, such as the unfelt energy of gamma rays, which can destroy living cells. Electromagnetic waves bring energy into a system through their electric and magnetic fields. These fields can exert forces and move charges in the system and, thus, do work on them. However, there is energy in an electromagnetic wave,...
Magnetism01:30

Magnetism

Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
Energy Diagrams - I01:14

Energy Diagrams - I

The dynamics of a mechanical system can be easily understood by interpreting a potential energy diagram. Since energy is a scalar quantity, the interpretation of the dynamics of the system becomes even simpler.
Take the example of a skater on a parabolic ramp. The potential energy at different points along the ramp will be proportional to the height of the ramp, which varies quadratically with the horizontal position on the ramp. As the skater moves down the ramp from the highest position,...
Maxwell's Thermodynamic Relations01:23

Maxwell's Thermodynamic Relations

Maxwell's thermodynamic relations are very useful in solving problems in thermodynamics. Each of Maxwell's relations relates a partial differential between quantities that can be hard to measure experimentally to a partial differential between quantities that can be easily measured. These relations are a set of equations derivable from the symmetry of the second derivatives and the thermodynamic potentials.
All thermodynamic potentials are exact differentials. Therefore, their second-order...

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Video Experimental Relacionado

Updated: Jul 12, 2026

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

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Published on: August 27, 2019

Relámpagos en Júpiter: velocidad, energía y efectos.

J S Lewis

    Science (New York, N.Y.)
    |December 19, 1980
    PubMed
    Resumen

    Júpiter Júpiter Júpiter es el nombre de Júpiter.

    Área de la Ciencia:

    • Ciencias planetarias Ciencias planetarias.
    • Física de la atmósfera Física de la atmósfera
    • Astrobiología Astrobiología.

    Sus antecedentes:

    • Comprender los rayos en Júpiter es clave para la dinámica atmosférica.
    • Las estimaciones anteriores de las velocidades de los rayos jovianos variaban.
    • Se debate el papel del rayo en la química prebiótica.

    Objetivo del estudio:

    • Para determinar la velocidad de un rayo en Júpiter.
    • Para comparar la eficiencia de la conversión de energía eléctrica en Júpiter frente a la Tierra.
    • Para evaluar la contribución del rayo a la síntesis de moléculas orgánicas en Júpiter.

    Principales métodos:

    • Análisis de datos ópticos y de radiofrecuencia de la nave espacial Voyager.
    • Comparación de las tasas de rayos de Júpiter con los valores terrestres.

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  • Modelado de la eficiencia de la conversión de energía para el rayo de Júpiter.

    • Principales resultados:

    • Los datos de la Voyager indican una tasa de rayos significativamente menor en Júpiter que en la Tierra.
    • La eficiencia de la conversión de la energía atmosférica en relámpagos en Júpiter se estima en alrededor de 10−7, muy por debajo de 10−4 de la Tierra.
    • La contribución del rayo a la producción de moléculas orgánicas complejas en Júpiter es insignificante.

    Conclusiones:

    • El rayo de Júpiter es menos frecuente y menos eficiente que el rayo terrestre.
    • Los procesos fotoquímicos, no los relámpagos, son los principales impulsores para la formación de sólidos de colores en la atmósfera de Júpiter.
    • El rayo juega un papel mínimo en la química prebiótica en Júpiter.