The 99-year-old documentarian tells the heir to the British throne he hopes his latest film helps create awareness about the state of destruction in underwater environments.

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"When Apollonius introduced conic sections, he demonstrated that it was not necessary for the plane intersecting the cone to be perpendicular to it. He went further to show that it could be an ...

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Geometrical Conic Sections: an Elementary Treatise, in which the Conic Sections are defined as the Plane Sections of a Cone, and treated by the Method of Projections. By J. Stewart Jackson.

Those phases with one-dimensional periodicity, such as the smectic and the cholesteric, can display complexions that reveal deep connections between conic sections and the cyclides of Dupin. The most ...

Abstract: Recently, polyhedral conic classifiers have become popular since they perform better compared to the Support Vector Machines (SVMs). Cone vertex of polyhedral conic classifiers is an ...