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  • Known Universe according to NED-D

    3,993 views 5 years ago
    NED-D Extragalactic Data - In this 3-D tour of the extragalactic universe, each spec of light represents the location of a galaxy. We're at the center looking outward. This isn't a preferred reference frame but rather a choice for plotting. 90% of all galaxies plotted with this database were located at distances less than 200 Mpc. 10% makes up the arms of the structure. It stands to reason that because most of the galaxies are at relatively small distances away from us that we would be one of these 90%. The structure was rotated such that its arms are moving faster than the speed of light, enabling us to view the large scale details of the structure. Try pausing the video and see if you would have drawn the same conclusions about its structure if it weren't being rotated. The point is that the rotation helps us to see the structure.

    This research has made use of the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration Show less
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  • Algebra Play all

    Algebra is the foundation for everything that will follow: trigonometry, calculus, and physics.
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  • Trigonometry Play all

    This playlist provides the Trigonometry you will need to do physics. Some calculus is used in this playlist to derive a few of the equations, although the word "calculus" is never used. The videos where calculus methods appear are annotated with (Calculus) in their titles. It was decided that it was better not to softball the presentation of this material so that students can at least see where the equations come from, even if they don't fully understand the math methods. If not interested in the origins, you can just fast forward to the ends of those tutorials to get the equation being derived.
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  • Calculus Play all

    Principles of Calculus and corresponding applications are presented. According to the traditional college curriculum, this playlist includes Calculus I, II, and Differential Equations.
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  • General Physics I Play all

    Physics tutorials according to the traditional college curriculum.
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    Electricity and Magnetism according to the traditional college curriculum
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    Principles of quantum mechanics are presented.
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  • Cosmology Play all

    First a novel theory of the big bang is presented. Second, some data from NED-D is plotted. NED is the Nasa Extragalactic Database and NED-D (2012) is a subset of the total database which only includes data points that were obtained independent of redshift, in this case 9,568 galaxies. Finally, supporting theories on curvature of space and quantized time are presented that make the theory possible.
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