Homework 54 this

墨涟

Nuclear weapons:
http://nuclearweaponarchive.org/Nwfaq/Nfaq0.html

8 q8 p& U/ q/ {8 Y! V0 ?) ]Weapons of Mass Destruction. (2003). In Harvey Kushner (Ed.), Encyclopedia of Terrorism, Vol. 1. (404-406). Thousand Oaks: Sage Reference. Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale:
* U( w; {4 C. j+ G8 O! K: o  X<http://find.galegroup.com/gvrl/i ... 925&version=1.0>

" V7 _/ k% P* K& ?; Y
) D$ D% @0 c& w& INuclear Weapons. (2006). Encyclopedia of Modern Europe: Europe Since 1914: Encyclopedia of the Age of War and Reconstruction, Vol. 4. (1891-1898). Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale:
$ n5 ~3 q" b! z; k! |) o1 l% \<http://find.galegroup.com/gvrl/i ... 925&version=1.0>
& K/ T; w1 X% l7 |2 F

7 {( E; e& W7 d, G. V+ aClark, Roger. (2005). Nuclear Weapons. In Dinah Shelton (Ed.), Encyclopedia of Genocide and Crimes Against Humanity, Vol. 2. (754-761). Detroit: Macmillan Reference USA. Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale:
' z- c# Y8 Q. e7 Y<http://find.galegroup.com/gvrl/i ... 925&version=1.0>

9 j- u+ X( e* \" b: S
* O" _& w+ x0 P8 T6 [/ D8 U, A$ {+ j" ~
( r( I5 Q: e. p. N1 h9 N- h3 xLerner, K. Lee, Gilman, Larry, & Haycock, Dean Allen. (2004). Nuclear Weapons. In K. Lee Lerner & Brenda Lerner (Eds.), Gale Encyclopedia of Science, Vol. 4. (3rd ed., 2816-2821). Detroit: Gale. Retrieved October 22, 2008,  from Gale Virtual Reference Library via Gale:
4 F  J, a' I. b1 I6 O( n' _<http://find.galegroup.com/gvrl/i ... 925&version=1.0>
% U" U- I5 o7 P& s8 @0 B1 z9 D
critical mass
5 u! H* L( E* O2 X4 {- Zn.
9 b) u5 L; H. C8 y% S; f0 j# ?+ f1. The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level.
2. The amount of matter needed to generate sufficient gravitational force to halt the current expansion of the universe
1 S4 ~# h" S+ r3 W7 G% g<http://www.thefreedictionary.com/critical+mass>
* }  V  D$ Z/ h. k/ l  M$ t4 D- @
7 E$ Q- u) {; z- B<>
! H- v. U& }+ W  r% c5 }
# F0 Q6 ^/ G4 T( E. r[ 本帖最后由 墨涟 于 2008-10-24 15:04 编辑 ]