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Porous silicon — (pSi) is a form of the chemical element silicon which has an introduced nanoporous holes in its microstructure, rendering a large surface to volume ratio in the order of 500m2/cm3. History Porous silicon was first discovered by accident in 1956… … Wikipedia
fiber-tip pen — (porous tip pen) A modern writing instrument in which the marking element or point consists of a porous material through which the ink can flow. These pens are commonly known as fiber tip or felt tip pens or may be referred to as soft tip pens … Forensic science glossary
Porous point pen — A porous point pen contains a point that is made of some porous material such as felt or ceramic.A high quality drafting pen will usually have a ceramic tip, since this wears well and does not broaden when pressure is applied while writing.… … Wikipedia
Pen — For other uses, see Pen (disambiguation). A ballpoint pen A pen (Latin penna, feather) is a device used to apply ink to a surface, usually paper, for writing or drawing. Historically, reed pens, quill pens, and dip pens were used, with a … Wikipedia
Marker pen — Felt tip redirects here. For the EP by Love Is All, see Felt Tip (EP). A selection of Crayola markers … Wikipedia
Laboratory glassware — Three beakers, a conical flask, a graduated cylinder and a volumetric flask … Wikipedia
Tissue engineering — Principle of tissue engineering Tissue engineering was once categorized as a sub field of bio materials, but having grown in scope and importance it can be considered as a field in its own right. It is the use of a combination of cells,… … Wikipedia
tree — treelike, adj. /tree/, n., v., treed, treeing. n. 1. a plant having a permanently woody main stem or trunk, ordinarily growing to a considerable height, and usually developing branches at some distance from the ground. 2. any of various shrubs,… … Universalium
Tree — /tree/, n. Sir Herbert Beerbohm /bear bohm/, (Herbert Beerbohm), 1853 1917, English actor and theater manager; brother of Max Beerbohm. * * * I Woody perennial plant. Most trees have a single self supporting trunk containing woody tissues, and in … Universalium
industrial glass — Introduction solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… … Universalium
Wood — Wooden redirects here. For other uses, see Wooden (disambiguation). Heartwood redirects here. For other uses, see Heartwood (disambiguation). This article is about the substance. For small forests, see woodland. For wood as a commodity, see… … Wikipedia