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The Jeans mass is named after the British physicist Sir James Jeans, who considered the process of gravitational collapse within a gaseous cloud. He was able to show that, under appropriate conditions, a cloud, or part of one, would become unstable and begin to collapse when it lacked sufficient gaseous pressure support to balance the force of gravity.
Farley–Buneman instability: Plasma instability: Donald T. Farley and Oscar Buneman: Görtler instability: Stability of flow along a concave boundary layer: H. Görtler: Holmboe instability: Stratified shear flows: Jørgen Holmboe: Jeans instability: Stability of interstellar gas clouds: James Jeans: Kelvin–Helmholtz instability: Stability ...
Firehose instability (a.k.a. hose instability), not to be confused with the similarly named Firehose instability in galactic dynamics; Fish instability, Free electron maser instability, Gyrotron instability, Helical (Helix) instability, Jeans instability, [23] [24] Magnetic buoyancy instability. Interchange instability (a.k.a. flute instability ...
The most basic gravitational stability analysis is the Jeans criteria, which addresses the balance between self-gravity and thermal pressure in a gas. In terms of the two above stability conditions, the system is stable if: i) thermal pressure balances the force of gravity, and ii) if the system is compressed slightly, the outward pressure ...
Jeans came up with another version of this equation, called Jeans mass or Jeans instability, that solves for the critical mass a cloud must attain before being able to collapse. Jeans also helped to discover the Rayleigh–Jeans law, which relates the energy density of black-body radiation to the temperature of the emission source.
In addition to that immediate boost, the company initially expected to capture at least $500 million in annual cost and capital savings within the first full year following the deal.
Last year, close to 26,000 students took the exam with just over 4,000 offered a seat. Of that, 4.5% of offers went to Black students and 7.6% to Latino students, according to city data.
The Jeans equations are a set of partial differential equations that describe the motion of a collection of stars in a gravitational field. The Jeans equations relate the second-order velocity moments to the density and potential of a stellar system for systems without collision.