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Approximations of this are found in nature Fibonacci spiral: circular arcs connecting the opposite corners of squares in the Fibonacci tiling: approximation of the golden spiral golden spiral = special case of the logarithmic spiral Spiral of Theodorus (also known as Pythagorean spiral)
The parabola is a member of the family of conic sections. In mathematics, a parabola is a plane curve which is mirror-symmetrical and is approximately U-shaped. It fits several superficially different mathematical descriptions, which can all be proved to define exactly the same curves.
While a parabolic arch may resemble a catenary arch, a parabola is a quadratic function while a catenary is the hyperbolic cosine, cosh(x), a sum of two exponential functions. One parabola is f(x) = x 2 + 3x − 1, and hyperbolic cosine is cosh(x) = e x + e −x / 2 . The curves are unrelated.
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A parabolic trough collector (PTC) is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, lined with a polished metal mirror. The sunlight which enters the mirror parallel to its plane of symmetry is focused along the focal line, where objects are positioned that are intended to be heated.
The highest, most reliable abstractions at a date are made by science, he claimed (e.g., science has conveyed the nature and danger of bacteria to us), and that is why he attached the last label back to the parabola. It is science that has told us that the sub-microscopic domain exists, and in general semantics the parabola represents that domain.
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Saint Louis Science Center's James S. McDonnell Planetarium: 1963 St. Louis, Missouri United States: Hyperboloid building museum planetarium Gyo Obata of Hellmuth, Obata and Kassabaum: Möglingen Wasserturm (Möglingen Water Tower) 1965 Ludwigsburg Germany: Hyperboloid water tower R. Kessler: Święty Krzyż TV Tower: 1966 Łysa Góra Poland