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Wood ash is the powdery residue remaining after the combustion of wood, such as burning wood in a fireplace, bonfire, or an industrial power plant. It is largely composed of calcium compounds, along with other non-combustible trace elements present in the wood, and has been used for many purposes throughout history.
The color of the ash comes from small proportions of inorganic minerals such as iron oxides and manganese. The oxidized metal elements that constitute wood ash are mostly considered alkaline. For example, ash collected from wood boilers is composed of [6] 17–33% calcium in the form of calcium oxide (CaO)
The wood may also be used for kendamas. Though a ken could be made entirely out of wenge, it's generally used to substitute a portion of the big/small cups [3] while the rest of the ken is made out of a softer, less dense wood. This concentration of weight in the big and/or small cup facilitates balance tricks such as lunars.
Mahogany is a reddish-brown color. It is approximately the color of the wood mahogany. However, the wood itself, like most woods, is not uniformly the same color and is not recognized as a color by most. The first recorded use of mahogany as a color name in English was in 1737. [2]
Most wood ash is primarily made up of calcium carbonate (CaCO 3), which is used in many glaze recipes. The ash also contains potassium carbonate (K 2 CO 3), phosphates, and other metals; however, the ratio of these chemicals depend on the location, soil, and type of wood the ash came from. The varying chemical compositions of ashes used to make ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 February 2025. Variations of the color gray This article is about variations of the color gray. For other uses, see Shades of gray (disambiguation). For the 2011 novel, see Fifty Shades of Grey. For its 2015 film adaptation, see Fifty Shades of Grey (film). For the novel series, see Fifty Shades ...
European ash in flower Narrow-leafed ash (Fraxinus angustifolia) shoot with leaves. Fraxinus (/ ˈ f r æ k s ɪ n ə s /), commonly called ash, is a genus of plants in the olive and lilac family, Oleaceae, [4] and comprises 45–65 species of usually medium-to-large trees, most of which are deciduous trees, although some subtropical species are evergreen trees.
Flindersia australis, commonly known as crow's ash, flindosy or Australian teak, [2] is a species of tree that is endemic to north-eastern Australia. It has pinnate leaves with between five and thirteen egg-shaped to elliptical leaflets, white to cream-coloured flowers arranged in panicles on the ends of branchlets and followed by woody ...