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  2. Jeans instability - Wikipedia

    en.wikipedia.org/wiki/Jeans_instability

    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.

  3. James Jeans - Wikipedia

    en.wikipedia.org/wiki/James_Jeans

    Sir James Hopwood Jeans OM FRS [1] (11 September 1877 – 16 September 1946 [2]) was an English physicist, mathematician and an astronomer.He served as a secretary of the Royal Society from 1919 to 1929, and was the president of the Royal Astronomical Society from 1925 to 1927, and won its Gold Medal.

  4. Tenor (website) - Wikipedia

    en.wikipedia.org/wiki/Tenor_(website)

    On April 25, 2017, Tenor introduced an app that makes GIFs available in MacBook Pro's Touch Bar. [10] [11] Users can scroll through GIFs and tap to copy it to the clipboard. [12] On September 7, 2017, Tenor announced an SDK for Unity and Apple's ARKit. It allows developers to integrate GIFs into augmented reality apps and games. [13] [14] [15] [7]

  5. Category : Images that should have transparent backgrounds

    en.wikipedia.org/wiki/Category:Images_that...

    Media in category "Images that should have transparent backgrounds" The following 105 files are in this category, out of 105 total. 111th Battle For The Bell.jpeg 370 × 208; 33 KB

  6. Transparency (graphic) - Wikipedia

    en.wikipedia.org/wiki/Transparency_(graphic)

    GIF animation of an Apollonian sphere packing with transparent background. Transparency in computer graphics is possible in a number of file formats.The term "transparency" is used in various ways by different people, but at its simplest there is "full transparency" i.e. something that is completely invisible.

  7. Plasma oscillation - Wikipedia

    en.wikipedia.org/wiki/Plasma_oscillation

    Metals are only transparent to light with a frequency higher than the metal's plasma frequency. For typical metals such as aluminium or silver, is approximately 10 23 cm −3, which brings the plasma frequency into the ultraviolet region. This is why most metals reflect visible light and appear shiny.

  8. Jeans equations - Wikipedia

    en.wikipedia.org/wiki/Jeans_equations

    Jeans Equation simulations place limits on the size of this halo. An example of such an analysis is given by the constraints that can be placed on the dark matter halo within the Milky Way. Using Sloan Digital Sky Survey measurements of our Galaxy, researchers were able to simulate the dark matter halo distribution using Jeans equations. [8]

  9. Plasma stability - Wikipedia

    en.wikipedia.org/wiki/Plasma_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 ...