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  2. List of citizen science projects - Wikipedia

    en.wikipedia.org/wiki/List_of_citizen_science...

    [4] [5] An emerging branch of Citizen Science are Community Mapping projects that utilize smartphone and tablet technology. For example, TurtleSAT [6] is a community mapping project that is mapping freshwater turtle deaths throughout Australia. This list of citizen science projects involves projects that engage all age groups.

  3. The Milky Way Project - Wikipedia

    en.wikipedia.org/wiki/The_Milky_Way_Project

    The annulus tool that was used to mark the bubbles in the Milky Way Project phase 1 was at random round and needed improvement. This problem was solved after the introduction of the ellipse tool. This new tool was used in the phase 2 of the project, short after DR1. This changed the classification and the tool does fit the actual shape of the ...

  4. Geodesics on an ellipsoid - Wikipedia

    en.wikipedia.org/wiki/Geodesics_on_an_ellipsoid

    the inverse geodesic problem or second geodesic problem, given A and B, determine s 12, α 1, and α 2. As can be seen from Fig. 1, these problems involve solving the triangle NAB given one angle, α 1 for the direct problem and λ 12 = λ 2 − λ 1 for the inverse problem, and its two adjacent sides.

  5. Ellipse - Wikipedia

    en.wikipedia.org/wiki/Ellipse

    An ellipse (red) obtained as the intersection of a cone with an inclined plane. Ellipse: notations Ellipses: examples with increasing eccentricity. In mathematics, an ellipse is a plane curve surrounding two focal points, such that for all points on the curve, the sum of the two distances to the focal points is a constant.

  6. Illumination problem - Wikipedia

    en.wikipedia.org/wiki/Illumination_problem

    Roger Penrose's solution of the illumination problem using elliptical arcs (blue) and straight line segments (green), with 3 positions of the single light source (red spot). The purple crosses are the foci of the larger arcs. Lit and unlit regions are shown in yellow and grey respectively.

  7. Talk:Circle–ellipse problem - Wikipedia

    en.wikipedia.org/wiki/Talk:Circle–ellipse_problem

    · Define the class AccidentalCircle as subclass of Ellipse. Use it when a change of parameters might make the object a non-circle. That is: the object is created as an ellipse, of class Ellipse; the object is also an object of class AccidentalCircle only if its parameters allow it to be a circle (for example, equal axes).

  8. Science project - Wikipedia

    en.wikipedia.org/wiki/Science_project

    A science project is an educational activity for students involving experiments or construction of models in one of the science disciplines. Students may present their science project at a science fair, so they may also call it a science fair project. Science projects may be classified into four main types.

  9. Elliptical distribution - Wikipedia

    en.wikipedia.org/wiki/Elliptical_distribution

    Elliptical distributions are defined in terms of the characteristic function of probability theory. A random vector on a Euclidean space has an elliptical distribution if its characteristic function satisfies the following functional equation (for every column-vector )