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A circle of latitude or line of latitude on Earth is an abstract east–west small circle connecting all locations around Earth (ignoring elevation) at a given latitude coordinate line. Circles of latitude are often called parallels because they are parallel to each other; that is, planes that contain any of these circles never intersect each ...
When calculating the length of a short north-south line at the equator, the circle that best approximates that line has a radius of (which equals the meridian's semi-latus rectum), or 6335.439 km, while the spheroid at the poles is best approximated by a sphere of radius , or 6399.594 km, a 1% difference. So long as a spherical Earth is assumed ...
Euclidean geometry is a mathematical system attributed to ancient Greek mathematician Euclid, which he described in his textbook on geometry, Elements.Euclid's approach consists in assuming a small set of intuitively appealing axioms (postulates) and deducing many other propositions from these.
For any point P on M, there is a unique line through N and P, and this line intersects the plane z = 0 in exactly one point P ′, known as the stereographic projection of P onto the plane. In Cartesian coordinates ( x , y , z ) on the sphere and ( X , Y ) on the plane, the projection and its inverse are given by the formulas
The Prussian G 9 Mallet was a class of 27 German 0-4-4-0 Mallet ... The straight-line stability was initially not so good due to rolling movements, but was later ...
A line starting on the left edge and tracing across the diagram to the right can be used to represent an interpolation formula if the following rules are followed: [5] Lozenge Diagram: geometric representation of polynomial interpolations.
The SLC model run ended in 1981, much earlier than the SL. It was replaced by the considerably larger 380SEC and 500SEC, once again derived from the 1980 S-class line. Volume production of the first R107 car, the 350SL, started in April 1971 alongside the last of the W113 cars; the 350SLC followed in October.
The Miles M.11 Whitney Straight was a twin-seat monoplane specifically built for use by flying clubs and private owners. [5] Its construction was primarily composed of wood, including spruce frames and three-ply birch covering. The Whitney Straight featured a fixed main undercarriage complete with aerodynamic fairings, along with a fixed ...