A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons by collision with lighter nuclei so as to expedite further fission.
A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.Found on http://home.nas.net/~dbc/cic_hamilton/dictionary/a.html
General term for materials used in nuclear reactors to reduce the energy (speed) of Fast Neutrons to that of Thermal (slow) Neutrons . The thermal neutrons are then able to interact and Fission with U-235.
Found on http://www.ionactive.co.uk/glossary.html
- any substance used to slow down neutrons in nuclear reactors 2. [n] - someone who presides over a forum or debate 3. [n] - someone who mediates disputes and attempts to avoid violenceFound on http://www.webdictionary.co.uk/definition.php?query=moderator
In a nuclear fission reactor, the moderator slows fast neutrons down. Slower moving neutrons are more effective at keeping the chain reaction going by causing more uranium nuclei to break apart. Each fission event releases fast neutrons - the moderator is therefore required to slow them downFound on http://www.users.zetnet.co.uk/computing/MainPage/SecDepts/Physics/Resources
the person who runs a conference or newsgroup - they have the responsibility of selecting which postings are used and which not
Found on http://www.archivemag.co.uk/
A material used to slow down the neutrons in a nuclear reactor, thus increasing their chances of being obsorbed by a fissile material.Some of the materials used as moderators are:graphiteheavy waterwaterFound on http://www.diracdelta.co.uk/science/source/m/o/moderator/source.html
In the Church of Scotland, the minister chosen to act as president of the annual General Assembly. ...Found on http://www.encyclo.co.uk/local/20688
A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons by collision with lighter nuclei so as to expedite further fissionFound on http://www.encyclo.co.uk/local/20725
A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons so as to expedite further fission.
Found on http://www.theiet.org/factfiles/energy/nuclear-terms.cfm?type=pdf
[ Latin : confer French modérateur
One who, or that which, moderates, restrains, or pacifies. Sir W. Raleigh.
« Angling was . . . a moderator
of passions.» Walton. 2.
The officer who presides over an assembly to prese...Found on http://www.encyclo.co.uk/webster/M/86
someone who mediates disputes and attempts to avoid violenceFound on http://wordnetweb.princeton.edu/perl/webwn?s=moderator
any substance used to slow down neutrons in nuclear reactorsFound on http://wordnetweb.princeton.edu/perl/webwn?s=moderator
• (n.) In the University of Oxford, an examiner for moderations; at Cambridge, the superintendant of examinations for degrees; at Dublin, either the first (senior) or second (junior) in rank in an examination for the degree of Bachelor of Arts. • (n.) A mechamical arrangement for regulating motion in a machine, or producing equality of ef...Found on http://thinkexist.com/dictionary/meaning/moderator/
(from the article `nuclear reactor`) ...12). Materials that contain atoms of this kindwater, heavy water, beryllium metal and oxide, and graphiteare deliberately incorporated into the ... Yttrium dihydride is used as a moderator in reactors to slow down neutrons. Certain rare earths are also used in shielding materials becau...Found on http://www.britannica.com/eb/a-z/m/106
A moderator is an official of an incorporated town who presides over the town meeting, and in some cases, other municipal meetings. In the United States, the area of the country best known for the town meeting form of government is New England. The office of moderator exists in at least Connecticut (Mandell c. 2007), Maine, ...Found on http://en.wikipedia.org/wiki/Moderator_(town_official)
A material such as light or heavy water or graphite used in a reactor to slow down fast neutrons so as to expedite further fission.Found on http://www.encyclo.co.uk/local/21076
The leader and main person responsible for an inspection or other review process....Found on http://www.imbus.de/glossar/
material used to reduce, by scattering collisions and without appreciable capture, the kinetic energy of neutronsFound on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=393-17-20
in a computer conference, a person who receives the proposed articles and may accept, modify, or reject themFound on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=732-03-13
Principle of a moderator Credit: European Nuclear Society A substance used in nuclear reactors to reduce the speed of fast neutrons produced by nuclear fission. These substances consist of atoms of light elements, such as deuterium in heavy water, graphite, and beryllium, to which neutrons are...Found on http://www.daviddarling.info/encyclopedia/M/moderator.html
In the Church of Scotland, the minister chosen to act as president of the annual General AssemblyFound on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0004871.html
In a nuclear reactor, a material such as graphite or heavy water used to reduce the speed of high-energy neutrons. Neutrons produced by nuclear fission are fast-moving and must be slowed to initiate further fission so that nuclear energy continues to be released at a controlled rate. Slow neutrons are much more likely to cause fission in a ...Found on http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0016165.html
A substance such as hydrogen, deuterium, oxygen or paraffin capable of slowing fast nuetrons upon collision.Found on http://www.chemistry-dictionary.com/definition/moderator.php
General term for materials used in nuclear reactors to reduce the energy (speed) of Fast Neutrons to that of Thermal (slow) Neutrons . The thermal neutrons are then able to interact and Fission with U-235.Found on http://www.ionactive.co.uk/glossary_atoz.html?s=az&t=m
No exact match found