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Many shapes have metaphorical names, i.e., their names are metaphors: these shapes are named after a most common object that has it. For example, "U-shape" is a shape that resembles the letter U, a bell-shaped curve has the shape of the vertical cross section of a bell, etc.
In mathematics, specifically homotopical algebra, an H-object [1] is a categorical generalization of an H-space, which can be defined in any category with a product and an initial object. These are useful constructions because they help export some of the ideas from algebraic topology and homotopy theory into other domains, such as in ...
This list includes those recognised minerals beginning with the letter H.The International Mineralogical Association is the international group that recognises new minerals and new mineral names; however, minerals discovered before 1959 did not go through the official naming procedure, although some minerals published previously have been either confirmed or discredited since that date.
An assortment of utensils. A kitchen utensil is a hand-held, typically small tool that is designed for food-related functions. Food preparation utensils are a specific type of kitchen utensil, designed for use in the preparation of food.
Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...
List of NGC objects. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000) List of NGC objects (3001–4000) List of NGC objects (4001–5000) List of NGC objects (5001–6000) List of NGC objects (6001–7000) List of NGC objects (7001–7840) List of IC objects; List of Messier objects; List of ...
Several HH objects have been seen near a single energy source, forming a string of objects along the line of the polar axis of the parent star. [7] The number of known HH objects has increased rapidly over the last few years, but that is a very small proportion of the estimated up to 150,000 in the Milky Way , [ 25 ] the vast majority of which ...
Cow hitch and bowline (bale sling hitch or strap hitch) – uses a continuous loop of strap to form a cow hitch around an object in order to hoist or lower it; Cross constrictor knot – a variant of the Constrictor knot; Crown knot – a knot made in the strands of the end of a rope – the start of a back splice