Surface area — is the measure of how much exposed area an object has. It is expressed in square units. If an object has flat faces, its surface area can be calculated by adding together the areas of its faces. Even objects with smooth surfaces, such as spheres … Wikipedia
surface analysis — ▪ chemistry Introduction in analytical chemistry (chemistry), the study of that part of a solid that is in contact with a gas or a vacuum. When two phases of matter are in contact, they form an interface. The term surface is usually… … Universalium
Surface-enhanced laser desorption/ionization — Infobox chemical analysis name = Surface enhanced laser desorption/ionization caption = acronym = SELDI classification = analytes = Biomolecules manufacturers = related = Matrix assisted laser desorption/ionization Soft laser desorption… … Wikipedia
Air permeability specific surface — The air permeability specific surface of a powder material is a single parameter measurement of the fineness of the powder. The specific surface is derived from the resistance to flow of air (or some other gas) through a porous bed of the powder … Wikipedia
Shale Gouge Ratio — (typically abbreviated to SGR) is a mathematical algorithm that aims to predict the fault rock types for simple fault zones developed in sedimentary sequences dominated by sandstones and shales.The parameter is widely used in the oil and gas… … Wikipedia
Near-surface geophysics — is the use of geophysical methods to investigate small scale features in the shallow (tens of meters) subsurface. It is closely related to applied geophysics or exploration geophysics. Methods used include seismic refraction and reflection,… … Wikipedia
California bearing ratio — The California bearing ratio (CBR) is a penetration test for evaluation of the mechanical strength of road subgrades and basecourses. It was developed by the California Department of Transportation.The test is performed by measuring the pressure… … Wikipedia
nuclear weapon — an explosive device whose destructive potential derives from the release of energy that accompanies the splitting or combining of atomic nuclei. [1945 50] * * * or atomic weapon or thermonuclear weapon Bomb or other warhead that derives its force … Universalium
angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction any member of the more than 300,000 species of flowering plants (division Anthophyta) … Universalium
Normalized Difference Vegetation Index — Negative values of NDVI (values approaching 1) correspond to water. Values close to zero ( 0.1 to 0.1) generally correspond to barren areas of rock, sand, or snow. Lastly, low, positive values represent shrub and grassland (approximately 0.2 to 0 … Wikipedia
Egg (biology) — Bird eggs and others (click on image for key) … Wikipedia