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Related Concept Videos

Plane Potential Flows01:23

Plane Potential Flows

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Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
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General External Flow Characteristics01:26

General External Flow Characteristics

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The study of external flow is essential for creating structures and objects that interact efficiently and safely with moving fluids, such as air or water. When a body is immersed in a flowing fluid, it experiences two primary forces: drag, which opposes motion along the flow direction, and lift, which acts perpendicular to the flow. The shape, size, and orientation of the object influence these forces.Streamlined and Blunt Bodies in External FlowObjects in fluid flow are classified as...
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The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
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Magnetostatic Boundary Conditions01:28

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An electric field suffers a discontinuity at a surface charge. Similarly, a magnetic field is discontinuous at a surface current. The perpendicular component of a magnetic field is continuous across the interface of two magnetic mediums. In contrast, its parallel component, perpendicular to the current, is discontinuous by the amount equal to the product of the vacuum permeability and the surface current. Like the scalar potential in electrostatics, the vector potential is also continuous...
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Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the...
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Updated: Dec 9, 2025

X-ray Beam Induced Current Measurements for Multi-Modal X-ray Microscopy of Solar Cells
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Solar Coronal Jets: Observations, Theory, and Modeling.

N E Raouafi1, S Patsourakos2, E Pariat3

  • 1The Johns Hopkins University Applied Physics Laboratory, Laurel, MD 20723, USA.

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Summary
This summary is machine-generated.

Solar jets, small-scale explosive events, offer insights into solar flares and coronal mass ejections (CMEs). Studying these magnetic transients helps understand solar activity and wind acceleration.

Keywords:
MorePlasmasSun: UV radiationSun: activitySun: coronaSun: magnetic fields

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Area of Science:

  • Solar physics
  • Plasma physics
  • Astrophysics

Background:

  • Chromospheric and coronal jets are solar transients that transfer mass and energy to the solar atmosphere and wind.
  • Jets share magnetic dynamics with solar flares and Coronal Mass Ejections (CMEs).
  • Understanding jets is crucial for comprehending solar activity and phenomena at the limits of spatial resolution, like spicules.

Purpose of the Study:

  • To investigate the role of solar jets in energy transfer and dynamics within the solar atmosphere.
  • To use jets as a model for understanding larger solar events like flares and CMEs.
  • To explore the connection between jet phenomena and the heating of the solar corona and acceleration of the solar wind.

Main Methods:

  • Observational analysis of chromospheric and coronal jet events.
  • Magnetohydrodynamic (MHD) modeling of jet dynamics.
  • Comparative studies with solar flares, CMEs, and spicules.

Main Results:

  • Jets exhibit explosive, magnetically driven dynamics similar to larger solar events.
  • Studies of jets provide insights into the energy budget and mass transport in the solar atmosphere.
  • Jet phenomena are linked to fundamental processes of coronal heating and solar wind acceleration.

Conclusions:

  • Solar jets are critical for understanding solar transients, from small-scale spicules to large CMEs.
  • Investigating jets offers a unique window into the physics of magnetic energy release in the solar atmosphere.
  • The study of jets is essential for addressing broad solar-heliospheric problems, including coronal heating and solar wind origins.