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Trade beads from ca. 1740, found in a Wichita village site in present-day Oklahoma Nineteenth-century European trade beads found in Alaska Chugach woven spruce-root hat. Trade beads are beads that were used as a medium of barter within and amongst communities. They are considered to be one of the earliest forms of trade between members of the ...
Silent trade, also called silent barter, dumb barter ("dumb" here used in its old meaning of "mute"), or depot trade, is a method by which traders who cannot speak each other's language can trade without talking. Group A would leave trade goods in a prominent position and signal, by gong, fire, or drum for example, that they had left goods.
An optical comparator (often called just a comparator in context) or profile projector is a device that applies the principles of optics to the inspection of manufactured parts. In a comparator, the magnified silhouette of a part is projected upon the screen, and the dimensions and geometry of the part are measured against prescribed limits .
Pole figures displaying crystallographic texture of gamma-TiAl in an alpha2-gamma alloy, as measured by high energy X-rays. [1] In materials science and related fields, crystallographic texture is the distribution of crystallographic orientations of a polycrystalline sample. A sample in which these orientations are fully random or is amorphous ...
The parties of the barter transaction are both equal and free. Neither party has advantages over the other, and both are free to leave the trade at any point in time. The transaction happens simultaneously. The goods are normally traded at the same point in time. Nonetheless delayed barter in goods may rarely occur as well. [12]
Countertrade also occurs when countries lack sufficient hard currency, or when other types of market trade are impossible.. In 2000, India and Iraq agreed on an "oil for wheat and rice" barter deal, subject to United Nations approval under Article 50 of the UN Persian Gulf War sanctions, that would facilitate 300,000 barrels of oil delivered daily to India at a price of $6.85 a barrel while ...
A diamond plate texture rendered close-up using physically based rendering principles. Microfacet abrasions cover the material, giving it a rough, realistic look even though the material is a metal. Specular highlights are high and realistically modeled at the appropriate edge of the tread using a normal map.
The hair of a rabbit can be divided into three types: "longer, rectrix guard hairs, stiff at the base; the more numerous tectrix barbed hairs forming the magor part of the coat, which share a hair follicle with the third type-the shorter hairs making up the undercoat."