rotational surface

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• Rotational molding — or moulding is a versatile process for creating many kinds of mostly hollow plastic parts. The phrase is often shortened to rotomolding or rotomoulding.The process was developed in the 1940s but in early years was used little because it was a… …   Wikipedia

• rotational slide —    The mass movement process, associated sediments (rotational slide deposit), or resultant landform characterized by an extremely slow to moderately rapid type of slide, composed of comparatively dry and largely soil rock materials, portions of… …   Glossary of landform and geologic terms

• rotational debris slide —    The mass movement process, associated sediments (rotational debris slide deposit), or resultant landform characterized by an extremely slow to moderately rapid type of slide, composed of comparatively dry and largely unconsolidated earthy… …   Glossary of landform and geologic terms

• rotational earth slide —    The mass movement process, associated sediments (rotational earth slide deposit), or resultant landform characterized by an extremely slow to moderately rapid type of slide, composed of comparatively dry and largely unconsolidated earthy… …   Glossary of landform and geologic terms

• rotational rock slide —    The mass movement process, associated sediments (rotational rock slide deposit), or resultant landform characterized by an extremely slow to moderately rapid type of slide, composed of comparatively dry and largely consolidated rock bodies,… …   Glossary of landform and geologic terms

• Boy's surface — In geometry, Boy s surface is an immersion of the real projective plane in 3 dimensional space found by Werner Boy in 1901 (he discovered it on assignment from David Hilbert to prove that the projective plane could not be immersed in 3 space).… …   Wikipedia

• Boy's surface/Proofs — Property of R. Bryant s parametrizationIf z is replaced by the negative reciprocal of its complex conjugate, {1 over z^star}, then the functions g1 , g2 , and g3 of z are left unchanged.ProofLet g1 prime; be obtained from g1 by substituting z… …   Wikipedia

• Martian surface — The study of surface characteristics (or surface properties and processes[1]) is a broad category of Mars science that examines the nature of the materials making up the Martian surface. The study evolved from telescopic and remote sensing… …   Wikipedia

• Morin surface — seen from the top Morin surface seen from t …   Wikipedia

• Minimal surface — For minimal surfaces in algebraic geometry see Minimal model (birational geometry). Verrill Minimal Surface …   Wikipedia

• spaceflight — /spays fluyt /, n. the flying of manned or unmanned spacecraft into or in outer space. Also, space flight. [1945 50; SPACE + FLIGHT1] * * * Introduction  flight beyond Earth s atmosphere. This article deals with the basic concepts associated with …   Universalium