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Traffic cones, also called pylons, witches' hats, [1] [2] road cones, highway cones, safety cones, caution cones, channelizing devices, [3] construction cones, roadworks cones, or just cones, are usually cone-shaped markers that are placed on roads or footpaths to temporarily redirect traffic in a safe manner.
TrafFix Devices, Inc. v. Marketing Displays, Inc., 532 U.S. 23 (2001), was a landmark United States Supreme Court decision in the field of trademark law. The case determined that a functional design could not be eligible for trademark protection, and it established a presumption that a patented design is inherently functional.
Eupithecia mutata, the spruce cone looper or cloaked pug, is a moth in the family Geometridae. The species was first described by Pearsall in 1908. It is found in the northern Atlantic and New England states in North America. In Canada, the range extends from Nova Scotia to northern Ontario. [3] The wingspan is 17–22 mm.
General parameters used for constructing nose cone profiles. Given the problem of the aerodynamic design of the nose cone section of any vehicle or body meant to travel through a compressible fluid medium (such as a rocket or aircraft, missile, shell or bullet), an important problem is the determination of the nose cone geometrical shape for optimum performance.
In geometry, a hypercone (or spherical cone) is the figure in the 4-dimensional Euclidean space represented by the equation x 2 + y 2 + z 2 − w 2 = 0. {\displaystyle x^{2}+y^{2}+z^{2}-w^{2}=0.} It is a quadric surface, and is one of the possible 3- manifolds which are 4-dimensional equivalents of the conical surface in 3 dimensions.
Synchlora aerata, the wavy-lined emerald moth or camouflaged looper, is a species of moth of the family Geometridae. The species was described by Johan Christian Fabricius in 1798. [2] [3] It is found in the United States and Canada. [1] [4] The wingspan is about 17 mm. [4] The larvae are loopers (inchworms) like the rest in the family.
The cone on a Hawaiian earring is contractible (since it is a cone), but not locally contractible or even locally simply connected. All manifolds and CW complexes are locally contractible, but in general not contractible. The Warsaw circle is obtained by "closing up" the topologist's sine curve by an arc connecting (0,−1) and (1,sin(1)).
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 ...