density determination

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• density — one of the most common density measurements involves the determination of the geometric space occupied within the envelope of a solid material... including any interior voids, cracks or pores. This is called geometric, envelope or bulk density… …   Mechanics glossary

• Atmospheric Neutral Density Experiment — The Atmospheric Neutral Density Experiment (ANDE) is an experiment using two spherical satellites to measure the effects of atmospheric drag on spacecraft. ANDE is part of the Space Test Program of the United States Department of Defense, and was …   Wikipedia

• Sample size determination — is the act of choosing the number of observations to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample …   Wikipedia

• Paper density — The paper density of a type of paper or cardboard is the mass of the product per unit of area. Two ways of expressing paper density are commonly used: * Expressed in grams per square metre (g/m²), paper density is also known as… …   Wikipedia

• Dumas method of molecular weight determination — The Dumas method of molecular weight determination was historically a procedure used to determine the molecular weight of an unknown substance. The Dumas method is appropriate to determine the molecular weights of volatile organic substances that …   Wikipedia

• Orbital-free density functional theory — In computational chemistry, orbital free density functional theory is a quantum mechanical approach to electronic structure determination which is based on functionals of the electronic density. It is most closely related to the Thomas–Fermi… …   Wikipedia

• Resolution (electron density) — Resolution in terms of electron density is a measure of the resolvability in the electron density map of a molecule. In X ray crystallography, resolution is the highest resolvable peak in the diffraction pattern. While cryo electron microscopy is …   Wikipedia

• Medium Density Fibreboard — Panneau de fibres à densité moyenne un échantillon de MDF Un panneau de fibres à densité moyenne[1] ou MDF (pour Medium Density Fiberboard, l appellation anglophone) est un panneau composite de fibres de bois à moyenne densité (avec des masses… …   Wikipédia en Français

• geoid — geoidal, adj. /jee oyd/, n. 1. an imaginary surface that coincides with mean sea level in the ocean and its extension through the continents. 2. the geometric figure formed by this surface, an ellipsoid flattened at the poles. [1880 85; < Gk… …   Universalium

• Cone beam computed tomography — Diagnostics MeSH D054894 Cone beam computed tomography (commonly referred to by the acronym CBCT) is a medical imaging technique that has become increasingly important in treatment planning and diagnosis in implan …   Wikipedia

• Densímetro — Densímetro. Un densímetro, es un instrumento que sirve para determinar la densidad relativa de los líquidos sin necesidad de calcular antes su masa y volumen. Normalmente, está hecho de vidrio y consiste en un cilindro hueco con un bulbo pesado… …   Wikipedia Español