Homework 54 this

墨涟

Nuclear weapons:
% k$ A/ W# Y: G) k5 vhttp://nuclearweaponarchive.org/Nwfaq/Nfaq0.html
# x* i: ^9 K- D3 a3 Z* M# N
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:
" _$ z5 `" i" O$ o' u! B5 d<http://find.galegroup.com/gvrl/i ... 925&version=1.0>

: P$ a  r  [$ j# F4 a# K3 w
, T8 F% ]- O. JNuclear 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:
5 {' B+ g+ H. f* @3 @2 M8 h<http://find.galegroup.com/gvrl/i ... 925&version=1.0>

0 A. n) H& O+ E* y! l% w) m7 c+ `
# x& }* I3 q. W7 kClark, 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:
& d0 L! @* I, J+ X<http://find.galegroup.com/gvrl/i ... 925&version=1.0>
+ Q9 G# m* d. J" c. {4 y0 u" Y
5 A' I. R" y" G/ w9 z/ h3 u( y

6 K( }% S  [0 Q# w. B# x6 L  W! LLerner, 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:
5 y& _: D! P# a8 x  w! Z5 k; N, V<http://find.galegroup.com/gvrl/i ... 925&version=1.0>

' g/ t1 q5 I6 u4 B7 ^critical mass
n.
1. 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
<http://www.thefreedictionary.com/critical+mass>
( G1 w( h0 X1 Y; B$ c3 X
1 z; `% o% f3 \3 {<>

, I( `* b9 B; m2 A& C+ ?( }[ 本帖最后由 墨涟 于 2008-10-24 15:04 编辑 ]