free electrons

free electrons
Electrons in the outer orbits around the nucleus of the atom. They can be moved out of orbit comparatively easy.

Dictionary of automotive terms. 2015.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Free electron laser — A free electron laser, or FEL, is a laser that shares the same optical properties as conventional lasers such as emitting a beam consisting of coherent electromagnetic radiation which can reach high power, but which uses some very different… …   Wikipedia

  • Free electron model — In three dimensions, the density of states of a gas of fermions is proportional to the square root of the kinetic energy of the particles. In solid state physics, the free electron model is a simple model for the behaviour of valence electrons in …   Wikipedia

  • free-electron model of metals — ▪ physics       in solid state physics, representation of a metallic solid as a container filled with a gas composed of free electrons (i.e., those responsible for high electrical and thermal conductivity). The free electrons, considered… …   Universalium

  • electrons — See bound electrons free electrons …   Dictionary of automotive terms

  • free electron — See free electrons …   Dictionary of automotive terms

  • Free Carrier Concentration — is the concentration of free carriers in a doped semiconductior. It is similar to the carrier concentration in a metal and for the purposes of calculating currents or drift velocities can be used in the same way. It should be noted that free… …   Wikipedia

  • Free radical (disambiguation) — Free radical is a chemistry term that describes an atomic or molecular species with unpaired electrons on an otherwise open shell configuration. The term may also refer to one of the following.Chemistry*Free radical addition An addition reaction… …   Wikipedia

  • free radical — free radicals N COUNT: usu pl Free radicals are atoms that contain one or more unpaired electrons. Free radicals are believed to be a cause of ageing, heart disease, and some cancers. [TECHNICAL] …   English dictionary

  • free radical — n an esp. reactive atom or group of atoms that has one or more unpaired electrons esp one that is produced in the body by natural biological processes or introduced from outside (as in tobacco smoke, toxins, or pollutants) and that can damage… …   Medical dictionary

  • free radical — free′ rad′ical n. biochem. a molecular fragment that bears one or more unpaired electrons and is therefore highly reactive • Etymology: 1895–1900 …   From formal English to slang

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”