Bulge

Bulge may refer to:

Astronomy and geography

  • Bulge (astronomy), a tightly packed group of stars at the center of a spiral galaxy
  • Equatorial bulge, a bulge around the equator of a planet due to rotation
  • Tharsis bulge, vast volcanic plateau centered near the equator in Mars’ western hemisphere
  • Tidal bulge, a bulge of land or water on a planet created by the pull of another object in orbit
  • Military

  • A localized discontinuity in an extended military line
    • Battle of the Bulge, a major World War II German offensive on the Western front starting in 1944
  • Battle of the Bulge, a major World War II German offensive on the Western front starting in 1944
  • Anti-torpedo bulge, passive warship defence against naval torpedoes between the WWI and WWII
  • People

  • Helge "Bulge" Bostrom (1894–1977), Canadian professional ice hockey player
  • Other

  • Beta bulge, a localized disruption of the regular hydrogen bonding of a beta sheet
  • Bulge bracket, the world's largest and most profitable multi-national investment banks
  • Earth bulge, a term used in telecommunications
  • Bulge (astronomy)

    In astronomy, a bulge is a tightly packed group of stars within a larger formation. The term almost exclusively refers to the central group of stars found in most spiral galaxies (see galactic spheroid). Bulges were historically thought to be elliptical galaxies that happened to have a disk of stars around them, but high-resolution images using the Hubble Space Telescope have revealed that many bulges lie at the heart of a spiral galaxy. It is now thought that there are at least two types of bulges: bulges that are like ellipticals and bulges that are like spiral galaxies.

    Classical bulges

    Bulges that have properties similar to those of elliptical galaxies are often called classical bulges due to their similarity to the historic view of bulges. These bulges are composed primarily of stars that are older, Population II stars, and hence have a reddish hue (see stellar evolution). These stars are also in orbits that are essentially random compared to the plane of the galaxy, giving the bulge a distinct spherical form. Due to the lack of dust and gasses, bulges tend to have almost no star formation. The distribution of light is described by de Vaucouleurs' law.

    Equatorial bulge

    An equatorial bulge is a difference between the equatorial and polar diameters of a planet, due to the centrifugal force of its rotation. A rotating body tends to form an oblate spheroid rather than a sphere. The Earth has an equatorial bulge of 42.77 km (26.58 mi): that is, its diameter measured across the equatorial plane (12,756.27 km (7,926.38 mi)) is 42.77 km more than that measured between the poles (12,713.56 km (7,899.84 mi)). An observer standing at sea level on either pole, therefore, is 21.36 km closer to Earth's centrepoint than if standing at sea level on the equator. The value of Earth's radius may be approximated by the average of these radii.

    An often-cited result of Earth's equatorial bulge is that the highest point on Earth, measured from the center outwards, is the peak of Mount Chimborazo in Ecuador, rather than Mount Everest. But since the ocean, like the Earth and the atmosphere, bulges, Chimborazo is not as high above sea level as Everest is.

    Podcasts:

    Bulge

    BULGE

    ALBUMS

    PLAYLIST TIME:

    Programming The Populous

    by: Biology

    Droves of civilians play into the plan,
    It's a shame mediocrity is in demand,
    With short-dime demeanor so clumsy my hands,
    Hold on for one more phrase,
    Lets be honest, be honest, this has got to stay off limits,
    If we can't take these headaches that are bound to come with it,
    Just say the word and I'll come to your coast,
    I'll be the virus if you'll be the host,
    Bore dumb defense for the absentee ghost,
    Just slightly out of range,
    It comes and goes but for the most part it's just not as bad as you once thought,




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