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  2. Google Maps - Wikipedia

    en.wikipedia.org/wiki/Google_Maps

    Google Maps Street View Trekker backpack being implemented on the sidewalk of the Hudson River Greenway in New York City. In late 2014, Google launched Google Underwater Street View, including 2,300 kilometres (1,400 mi) of the Australian Great Barrier Reef in 3D. The images are taken by special cameras which turn 360 degrees and take shots ...

  3. Rotation of axes in two dimensions - Wikipedia

    en.wikipedia.org/wiki/Rotation_of_axes_in_two...

    In mathematics, a rotation of axes in two dimensions is a mapping from an xy - Cartesian coordinate system to an x′y′ -Cartesian coordinate system in which the origin is kept fixed and the x′ and y′ axes are obtained by rotating the x and y axes counterclockwise through an angle . A point P has coordinates ( x, y) with respect to the ...

  4. Linear map - Wikipedia

    en.wikipedia.org/wiki/Linear_map

    If a linear map is only composed of rotation, reflection, and/or uniform scaling, then the linear map is a conformal linear transformation. Vector space of linear maps [ edit ] The composition of linear maps is linear: if f : V → W {\displaystyle f:V\to W} and g : W → Z {\textstyle g:W\to Z} are linear, then so is their composition g ∘ f ...

  5. Ocean gyre - Wikipedia

    en.wikipedia.org/wiki/Ocean_gyre

    All subtropical gyres are anticyclonic, meaning that in the northern hemisphere they rotate clockwise, while the gyres in the southern hemisphere rotate counterclockwise. This is due to the Coriolis force. Subtropical gyres typically consist of four currents: a westward flowing equatorial current, a poleward flowing, narrow, and strong western ...

  6. Google Earth - Wikipedia

    en.wikipedia.org/wiki/Google_Earth

    Google Earth is a computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles. Users can explore the globe by entering addresses and ...

  7. Google Street View in the United States - Wikipedia

    en.wikipedia.org/wiki/Google_Street_View_in_the...

    A Google Maps Camera Car showcased on Google campus in Mountain View, California in November 2010. The United States was the first country to have Google Street View images and was the only country with images for over a year following introduction of the service on May 25, 2007. Early on, most locations had a limited number of views, usually ...

  8. Quaternions and spatial rotation - Wikipedia

    en.wikipedia.org/wiki/Quaternions_and_spatial...

    A rotation can be represented by a unit-length quaternion q = (w, r →) with scalar (real) part w and vector (imaginary) part r →. The rotation can be applied to a 3D vector v → via the formula = + (+). This requires only 15 multiplications and 15 additions to evaluate (or 18 multiplications and 12 additions if the factor of 2 is done via ...

  9. Boundary markers of the original District of Columbia - Wikipedia

    en.wikipedia.org/wiki/Boundary_Markers_of_the...

    Geography Map of the boundary stones. The District of Columbia (initially, the Territory of Columbia) was originally specified to be a square 100 square miles (260 km 2) in area, with the axes between the corners of the square running north-south and east-west, The square had its southern corner at the southern tip of Jones Point in Alexandria, Virginia, at the confluence of the Potomac River ...