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  2. Conic section - Wikipedia

    en.wikipedia.org/wiki/Conic_section

    A conic is the curve obtained as the intersection of a plane, called the cutting plane, with the surface of a double cone (a cone with two nappes).It is usually assumed that the cone is a right circular cone for the purpose of easy description, but this is not required; any double cone with some circular cross-section will suffice.

  3. Cone - Wikipedia

    en.wikipedia.org/wiki/Cone

    The axis of a cone is the straight line passing through the apex about which the cone has a circular symmetry. In common usage in elementary geometry, cones are assumed to be right circular, i.e., with a circle base perpendicular to the axis. [1] If the cone is right circular the intersection of a plane with the lateral surface is a conic section.

  4. Lithic flake - Wikipedia

    en.wikipedia.org/wiki/Lithic_flake

    The cone of force often leaves a distinctive bulb of applied force on the flake and a corresponding flake scar on the core. A bending initiation results when a flake initiates not at the point where the force was applied, but rather further away from the edge of the core, resulting in a flake with no Hertzian cone or bulb of applied force and ...

  5. Lithic core - Wikipedia

    en.wikipedia.org/wiki/Lithic_core

    The end result is a cone-like shape. Cylindrical lithic cores are made in a similar fashion, but there is a platform on both ends of the tool stone, with flakes going up and down the side of the cylinder from either direction. Lithic core (Mousterian) from Makhtesh Gadol, southern Israel. Upper paleolithic cylindrical blade core, France.

  6. Conical plate centrifuge - Wikipedia

    en.wikipedia.org/wiki/Conical_Plate_Centrifuge

    A set of parallel plates with a tilt angle θ with respect to horizontal plane is installed to reduce the distance of the particle settling. The reason for the tilted angle is to allow the settled solids on the plates to slide down by gravitational force so they do not accumulate and clog the channel formed between adjacent plates. [3]

  7. Viscometer - Wikipedia

    en.wikipedia.org/wiki/Viscometer

    "Cone and plate" viscometers use a narrow-angled cone in close proximity to a flat plate. With this system, the shear rate between the geometries is constant at any given rotational speed. The viscosity can easily be calculated from shear stress (from the torque) and shear rate (from the angular velocity).

  8. Ruled surface - Wikipedia

    en.wikipedia.org/wiki/Ruled_surface

    A ruled surface can be described as the set of points swept by a moving straight line. For example, a cone is formed by keeping one point of a line fixed whilst moving another point along a circle. A surface is doubly ruled if through every one of its points there are two distinct lines that lie on the surface.

  9. Cone-in-cone structures - Wikipedia

    en.wikipedia.org/wiki/Cone-in-cone_structures

    Often the cone-in-cone will be found as features of calcite layers within a shale, [5] and rarely within a dedolomite (calcitized dolomite). [6] Cone-in-cone structures should not be confused with either shatter cones such as are produced by meteorite impacts, or with shear cones like those developed in coals. Both these structures differ from ...