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Modern construction of guitars is an example of using rarefaction in manufacturing. By forcing the reduction of density (loss of oils and other impurities) in the cellular structure of the soundboard, a rarefied guitar top produces a tonal decompression affecting the sound of the instrument, mimicking aged wood.
The technique of rarefaction was developed in 1968 by Howard Sanders in a biodiversity assay of marine benthic ecosystems, as he sought a model for diversity that would allow him to compare species richness data among sets with different sample sizes; he developed rarefaction curves as a method to compare the shape of a curve rather than absolute numbers of species.
Root Meaning in English Origin language Etymology (root origin) English examples fa-, fa (FA) [1]say, speak: Latin: fārī, see also fatērī: affable, bifarious ...
Rare-earth ore, shown with a United States penny for size comparison. A rare-earth mineral contains one or more rare-earth elements as major metal constituents. Rare-earth minerals are usually found in association with alkaline to peralkaline igneous complexes in pegmatites.
In Marxist philosophy, reification (Verdinglichung, "making into a thing") is the process by which human social relations are perceived as inherent attributes of the people involved in them, or attributes of some product of the relation, such as a traded commodity.
The Hague–Visby Rules is a set of international rules for the international carriage of goods by sea.They are a slightly updated version of the original Hague Rules which were drafted in Brussels in 1924.
The process of metrication is typically initiated and overseen by a country's government, generally motivated by the necessity of establishing a uniform measurement system for effective international cooperation in fields like trade and science.
Surface waves in water showing water ripples. In physics, mathematics, engineering, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities.