Homework 54 this

墨涟

Nuclear weapons:
( o3 ^  e3 f* R, y+ yhttp://nuclearweaponarchive.org/Nwfaq/Nfaq0.html
) d& L- Y6 ~. b2 X
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:
5 I; E; j0 U4 \<http://find.galegroup.com/gvrl/i ... 925&version=1.0>

: C% r! e) Q/ s1 n
Nuclear 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:
<http://find.galegroup.com/gvrl/i ... 925&version=1.0>


Clark, 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:
<http://find.galegroup.com/gvrl/i ... 925&version=1.0>
: q9 Y9 C# x: ?/ H6 L5 R3 p
$ J3 u+ e0 B9 W. T" y; j4 D
. d/ C1 U0 U' e; S. M. D- _
) c0 G- s3 K, l" Z5 `Lerner, 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:
/ {, U4 T* Q( z% b! h, l1 f<http://find.galegroup.com/gvrl/i ... 925&version=1.0>

+ |  j0 b) @  {critical mass
& ?+ j, L; i3 s% L* gn.
2 Z2 `  ~5 r7 P  U0 [1. The smallest mass of a fissionable material that will sustain a nuclear chain reaction at a constant level.
  X8 E8 d+ X1 W5 g& D9 T& G2 }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>
7 L- Y  ~. n7 c$ p' q
<>
9 W+ O5 P& M( k$ {- _8 `' t* ?
[ 本帖最后由 墨涟 于 2008-10-24 15:04 编辑 ]