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Paraboloid
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In geometry, a paraboloid is a quadric surface that has exactly one axis of symmetry and no center of symmetry. The term "paraboloid" is derived from parabola, which refers to a conic section that has a similar property of symmetry.
Parabolic reflector
Parabolic reflector
Pringles fried snacks are in the shape of a hyperbolic paraboloid.
Pringles fried snacks are in the shape of a hyperbolic paraboloid.
Warszawa Ochota railway station, an example of a hyperbolic paraboloid structure
Warszawa Ochota railway station, an example of a hyperbolic paraboloid structure
Surface illustrating a hyperbolic paraboloid
Surface illustrating a hyperbolic paraboloid
Parabola
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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.
Parabolic compass designed by Leonardo da Vinci
Parabolic compass designed by Leonardo da Vinci
A bouncing ball captured with a stroboscopic flash at 25 images per second. The ball becomes significantly non-spherical after each bounce, especially
A bouncing ball captured with a stroboscopic flash at 25 images per second. The ball becomes significantly non-spherical after each bounce, especially after the first. That, along with spin and air resistance, causes the curve swept out to deviate slightly from the expected perfect parabola.
Parabolic trajectories of water in a fountain.
Parabolic trajectories of water in a fountain.
The supporting cables of suspension bridges follow a curve that is intermediate between a parabola and a catenary.
The supporting cables of suspension bridges follow a curve that is intermediate between a parabola and a catenary.