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  2. Political spectrum - Wikipedia

    en.wikipedia.org/wiki/Political_spectrum

    Mitchell charts these traditions graphically using a vertical axis as a scale of kratos/akrateia and a horizontal axis as a scale of archy/anarchy. He places democratic progressivism in the lower left, plutocratic nationalism in the lower right, republican constitutionalism in the upper right, and libertarian individualism in the upper left.

  3. Nolan Chart - Wikipedia

    en.wikipedia.org/wiki/Nolan_Chart

    The Nolan Chart in its traditional form. The Nolan Chart is a political spectrum diagram created by American libertarian activist David Nolan in 1969, charting political views along two axes, representing economic freedom and personal freedom.

  4. Euler angles - Wikipedia

    en.wikipedia.org/wiki/Euler_angles

    The X axis is now at angle γ with respect to the x axis. The XYZ system rotates again, but this time about the x axis by β. The Z axis is now at angle β with respect to the z axis. The XYZ system rotates a third time, about the z axis again, by angle α. In sum, the three elemental rotations occur about z, x and z.

  5. Charts on SO (3) - Wikipedia

    en.wikipedia.org/wiki/Charts_on_SO(3)

    Problems of this sort are inevitable, since SO(3) is diffeomorphic to real projective space P 3 (R), which is a quotient of S 3 by identifying antipodal points, and charts try to model a manifold using R 3. This explains why, for example, the Euler angles appear to give a variable in the 3-torus, and the unit quaternions in a 3-sphere.

  6. The Political Compass - Wikipedia

    en.wikipedia.org/wiki/The_Political_Compass

    The economic (left–right) axis measures one's opinion of how the economy should be run. [1] In economic terms, the political left is defined as the desire for the economy to be run by a cooperative collective agency, which can mean a sovereign state but also a network of communes , while the political right is defined as the desire for the ...

  7. Nomogram - Wikipedia

    en.wikipedia.org/wiki/Nomogram

    Here two scales represent known values and the third is the scale where the result is read off. The simplest such equation is u 1 + u 2 + u 3 = 0 for the three variables u 1, u 2 and u 3. An example of this type of nomogram is shown on the right, annotated with terms used to describe the parts of a nomogram.

  8. Pournelle chart - Wikipedia

    en.wikipedia.org/wiki/Pournelle_chart

    The Pournelle chart, developed by Jerry Pournelle in his 1963 political science Ph.D. dissertation, is a two-dimensional coordinate system which can be used to distinguish political ideologies. It is similar to the political compass and the Nolan Chart in that it is a two-dimensional chart, but the axes of the Pournelle chart are different from ...

  9. Spacecraft attitude determination and control - Wikipedia

    en.wikipedia.org/wiki/Spacecraft_attitude...

    In orbit, a spacecraft with one axis much longer than the other two will spontaneously orient so that its long axis points at the planet's center of mass. This system has the virtue of needing no active control system or expenditure of fuel. The effect is caused by a tidal force. The upper end of the vehicle feels less gravitational pull than ...