to propagate heat
111Gravity current — In fluid dynamics, a gravity current is a primarily horizontal flow in a gravitational field that is driven by a density difference, hence gravity currents also sometimes being referred to as density currents . Typically, the density difference… …
112De Laval nozzle — A de Laval nozzle (or convergent divergent nozzle, CD nozzle or con di nozzle) is a tube that is pinched in the middle, making an hourglass shape. It is used as a means of accelerating the flow of a gas passing through it to a supersonic speed.… …
113Density of states — Condensed matter physics Phases · Phase tr …
114Astrocyte — For the cell in the gastrointestinal tract, see Interstitial cell of Cajal. Neuron: Astrocyte Astrocytes can be visualized in culture because they express glial fibrillary acidic protein …
115Polaritonics — is an intermediate regime between photonics and sub microwave electronics (see Fig. 1). In this regime, signals are carried by an admixture of electromagnetic and lattice vibrational waves known as phonon polaritons, rather than currents or… …
116Large igneous province — Only a few of the largest Large Igneous Provinces are indicated (by the dark purple areas) on this geological map, which depicts crustal geologic provinces as seen in seismic refraction data. A Large Igneous Province (LIP) is an extremely large… …
117Grain boundary strengthening — (or Hall Petch strengthening) is a method of strengthening materials by changing their average crystallite (grain) size. It is based on the observation that grain boundaries impede dislocation movement and that the number of dislocations within a …
118Time in physics — In physics, the treatment of time is a central issue. It has been treated as a question of geometry. One can measure time and treat it as a geometrical dimension, such as length, and perform mathematical operations on it. It is a scalar quantity… …
119education — /ej oo kay sheuhn/, n. 1. the act or process of imparting or acquiring general knowledge, developing the powers of reasoning and judgment, and generally of preparing oneself or others intellectually for mature life. 2. the act or process of… …
120fullerene — /fool euh reen /, n. any of a class of molecules of carbon having a roughly spherical shape. [1985 90; after R. Buckminster FULLER; see ENE] * * * Any of a class of all carbon molecules whose atoms are arranged in closed hollow shells. Allotropes …
