10. 
    critical mass
    Critical mass is the minimum mass of a fissionable material (235U or 239Pu) that will initiate an uncontrolled chain reaction as in an atomic bomb. The critical mass of pure 239Pu is about 4.5 kg, and of 235U about 15 kg.
    Found op http://www.ktf-split.hr/periodni/en/abc/c.html
    
    
11. 
    Critical mass
    The smallest mass of fissile material that will support a self-sustaining chain reaction under specified conditions.
    Found op http://www.encyclo.co.uk/visitor-contributions.php
    
    
12. 
    Critical Mass
    The smallest mass of fissile material that will support a self-sustaining chain reaction under specified conditions.
    Found op http://www.theiet.org/factfiles/energy/nuclear-terms.cfm?type=pdf
    
    
13. 
    critical mass
    <chemistry, radiobiology> The minimum amount of mass of a combination of radioactive substances needed for the substances to generate and lose an exactly balanced number of neutrons to make a chain reaction which will keep going by itself. ... (09 Oct 1997) ...
    Found op http://www.mondofacto.com/facts/dictionary?critical+mass
    
    
14. 
    critical mass
    noun the minimum mass of fissionable material that can sustain a chain reaction
    Found op http://wordnetweb.princeton.edu/perl/webwn?s=critical%20mass
    
    
15. 
    critical mass
    in nuclear physics, the minimum amount of a given fissile material necessary to achieve a self-sustaining fission chain reaction under stated ... [3 related articles]
    Found op http://www.britannica.com/eb/a-z/c/159
    
    
16. 
    Critical Mass
    [Threshold album] Critical Mass is the sixth album by British progressive metal band Threshold. It was recorded in early 2002 and released in September. It is also the last album to feature original bassist Jon Jeary, who left immediately after the release. He was replaced by Steve Anderson,...
    Found op http://en.wikipedia.org/wiki/Critical_Mass_(Threshold_album)
    
    
17. 
    critical mass
    In nuclear physics, the minimum mass of fissile material that can undergo a continuous chain reaction. Below this mass, too many neutrons escape from the surface for a chain reaction to carry on; above the critical mass, the reaction may accelerate into a nuclear explosion
    Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015958.html
    
    
18. 
    Critical mass
    [software engineering] Critical mass in software engineering is a term used to describe a stage in software life cycle: when the source code grows too large to effectively manage without a complete rewrite. At the Critical Mass stage, fixing a bug introduces one or more new bugs. Tools such ...
    Found op http://en.wikipedia.org/wiki/Critical_mass_(software_engineering)
    
    
19. 
    Critical mass
    [disambiguation] Critical mass is the amount of fissile material needed to sustain fission. The term may also be used in one of the following meanings: ==Gaming== ==Art, film and literature== ==Music== ...
    Found op http://en.wikipedia.org/wiki/Critical_mass_(disambiguation)
    
    
20. 
    Critical mass
    ==Changing the point of criticality== The point and therefore the mass where criticality occurs may be changed by modifying certain attributes such as fuel, shape, temperature, density and the installation of a neutron-reflective substance. These attributes have complex interactions and interdepend...
    Found op http://en.wikipedia.org/wiki/Critical_mass
    
    
21. 
    Critical Mass
    Critical Mass is a cycling event typically held on the last Friday of every month in over 300 cities around the world. The ride was originally founded in 1992 in San Francisco. The purpose of Critical Mass is not usually formalized beyond the direct action of meeting at a set location and time and ...
    Found op http://en.wikipedia.org/wiki/Critical_Mass
    
    
22. 
    Critical Mass
    The smallest mass of fissile material that will support a self-sustaining chain reaction under specified conditions.
    Found op http://www.encyclo.co.uk/local/21076
    
    

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