| classical confinement | <radiobiology> Plasma confinement in which particle and energy transport occurs via classical diffusion, best possible case for magnetically confined plasmas. See: classical diffusion. (09 Oct 1997) |
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| magnetic confinement | <physics> Use of magnetic fields to confine a plasma. (Confinement involves restricting the volume of the plasma and/or restricting particle or energy transport from the centre of the plasma to the edge.) (09 Oct 1997) |
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| magnetic confinement fusion | <physics> Method of fusion which uses magnetic fields / magnetic bottles to confine a hot plasma until fusion occurs. (09 Oct 1997) |
| confinement | Lying-in; giving birth to a child. Origin: L. Confine (ntr.), a boundary, confine, fr. Con-+ finis, boundary (05 Mar 2000) |
| confinement time | <radiobiology> There are several types. The general definition is tau = [total]/[loss per unit time], hence Tau_E = [total energy]/[energy loss per unit time]. Tau_[E, N,.] is the amount of time the plasma is contained (for example, by magnetic fields) before its [energy (E), particles (N or P)] leak / dissipate away. The different types are, in general, similar but not equal. (N.B., Tau_E is NOT electron confinement time!) (09 Oct 1997) |
| inertial confinement fusion | <radiobiology> Approach to fusion where the plasma is imploded so quickly that the inertia of the converging particles is so high that many fuse before they disperse. This is the method used in a hydrogen bomb, ICF schemes for power production usually use small pellets of fuel in an attempt to make miniature h-bomb type explosions. Methods for imploding the pellet include bombardment from all sides with high-powered laser and particle beams, and of course implosion in a fission bomb. Parts of ICF fusion research remain classified due to their military implications and applications, though much ICF research was recently declassified. (09 Oct 1997) |
| electrostatic confinement | <radiobiology> An approach to fusion based on confining charged particles by means of electric fields, rather than the magnetic fields used in magnetic confinement. (09 Oct 1997) |
| energy confinement time | <radiobiology> Characteristic time in which 1/e (or sometimes 1/2) of a system's energy is lost to its surroundings. In a plasma device, the energy loss time (or the energy confinement time) is one of three critical parameters determining whether enough fusion will occur to sustain a reaction. See: Lawson criterion. (09 Oct 1997) |
| philology, classical | The study of ancient greek and roman literature, including grammar, etymology, criticism, literary history, and language and linguistic history. (12 Dec 1998) |
| classical article | The current presentation of a previously printed seminal article marking a milestone in the history of medicine or science. It is usually accompanied by introductory remarks heralding its reprinting, often on the anniversary of its original publication or on an anniversary of the author's birth or death. It is usually reprinted in full, with complete bibliographical reference to the original appearance. (12 Dec 1998) |
| classical cesarean section | A cesarean section in which the uterus is entered through a vertical fundal incision. (05 Mar 2000) |
| classical conditioning | <psychology> Learning that takes place when a conditioned stimulus is paired with an unconditioned stimulus. (12 Dec 1998) |
| classical diffusion | <radiobiology> In plasma physics, diffusion due solely to scattering (collisions) of charged particles (with unlike charges) via electrical (Coulomb) interactions. (See also diffusion.) (09 Oct 1997) |
| classical epidemiology | <epidemiology> Our term for the varieties of epidemiology primarily concerned with the statistical relationships between disease agents, both infectious and non-infectious; for example a study to establish the relative risk of lung cancer associated with smoking. We contrast this with ecological epidemiology. (05 Dec 1998) |
| classical genetics | That body of method and analysis that perceives genetics as the study of the transmission of genotype from parent to offspring; the study of multiple individuals is essential to it. (05 Mar 2000) |
| classical haemophilia | See: haemophilia A. (05 Mar 2000) |