physics3-20

Transcriber:	OOPS SJTU: Julia
Brief Bio:	Shanghai Jiao Tong University, China pinkpuppet@sjtu.edu.cn
Timecode:	OOPS SJTU: Shelley
Brief Bio:	Shanghai Jiao Tong University, China jinxialu@hotmail.com
Proofreader:	OOPS SJTU: Fly
Brief Bio:	Shanghai Jiao Tong University, China flycao1985@hotmail.com
Date finished:	2/25/2006