collision coefficient
121Weather radar — in Norman, Oklahoma with rainshaft …
122Sun-synchronous orbit — Diagram showing the orientation of a Sun synchronous orbit (green) in four points of the year. A non sun synchronous orbit (magenta) is also shown for reference A Sun synchronous orbit (sometimes called a heliosynchronous orbit) is a geocentric… …
123QCD vacuum — The QCD vacuum is the vacuum state of quantum chromodynamics (QCD). It is an example of a non perturbative vacuum state, characterized by many non vanishing condensates such as the gluon condensate or the quark condensate. These condensates… …
124Low-energy vehicle — A Low energy vehicle is any type of vehicle that uses less energy than a regular petroleum fuel vehicle. Higher efficiency can be achieved by changing the vehicle s design, and/or by modifying its powertrain. Energy consumption as low as 5 12.5… …
125German tank problem — During World War II, production of German tanks such as the Panther was accurately estimated by Allied intelligence using statistical methods. In the statistical theory of estimation, estimating the maximum of a uniform distribution is a common… …
126Flambage — Flexion sous un effort de compression. Le flambage ou flambement est un phénomène d instabilité d une structure, qui soumise à un effort normal de compression, a tendance à fléchir et se déformer dans une direction perpendiculaire à l axe de… …
127Ondes gamma — Rayon gamma Pour les articles homonymes, voir gamma (homonymie). Les rayons gamma sont produits par des processus nucléaires énergétiques au cœur des noyaux atomiques …
128Particule gamma — Rayon gamma Pour les articles homonymes, voir gamma (homonymie). Les rayons gamma sont produits par des processus nucléaires énergétiques au cœur des noyaux atomiques …
