impact strength of wood

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• Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… …   Universalium

• wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …   Universalium

• Impact force — An impact force is a high force or shock applied over a short time period. Such a force or acceleration can sometimes have a greater effect than a lower force applied over a proportionally longer time period. Theory At normal speeds, during a… …   Wikipedia

• Wood drying — (also seasoning lumber or timber seasoning) refers to reducing the moisture content of wood prior to its use. For some purposes wood is not dried at all (it is used green ) [http://en.wikipedia.org/wiki/Green wood] . Often the wood needs to be in …   Wikipedia

• Wood pulp — is a dry fibrous material prepared by chemically or mechanically separating the fibers which make up wood. Pulp can be either fluffy or formed into thick sheets. The latter form is used if the pulp must be transported from the pulp mill to a… …   Wikipedia

• Wood preservation — All measures that are taken to ensure a long life of wood fall under the definition wood preservation (timber treatment). Apart from structural wood preservation measures, there are a number of different (chemical) preservatives and processes… …   Wikipedia

• Impact crater — The prominent impact crater Tycho on the Moon. In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body. In most common usage,… …   Wikipedia

• Wood economy — The existence of a wood economy, or more correctly, a forest economy (since in many countries a bamboo economy predominates), is a prominent matter in many developing countries as well as in many other nations with temperate climate and… …   Wikipedia

• Wood (golf) — A modern 460cc driver alongside an early 1980s persimmon driver. A wood (also called a driver) is a type of club used in the sport of golf. Woods are used to hit the ball farther (greater distances) than any other type of golf club. Woods are so… …   Wikipedia

• Balsa wood bridge — The building of balsa wood bridges is very often used as an educational activity. It may be accompanied by a larger project involving varying areas of study. Typically classes which would include a balsa wood bridge project cover the subject… …   Wikipedia

• Social impact theory — predicts that as strength and immediacy increase within a group, conformity will also increase. The more important a group is and the more one is in its presence, the more likely it is for one to conform to the group s normative pressures. As the …   Wikipedia