ben ben posted on 05/25/2007
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ƪڵһᵽ£Сϸ˵һƪֶ˵ڶƪδƪο
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Whence the Force of F = ma?
I: Culture Shock
Frank Wilczek
When I was a student, the subject that gave me the most trouble was classical mechanics. That always struck me as peculiar, because I had no trouble learning more advanced subjects, which were supposed to be harder. Now I think
2007-05-24 14:55:43
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Լ塡Խ
ûελ۳ٸѧУٸŵٸ̣
Īɣ2002ԺȫƱܳ2007515ΣĪɴڻĹ١֮ǰûְλְ3ꡣ
Ī漮㶫Զ1944Ϻ5ƾۣ1963ټŦԼ
綼ͻ
fang posted on 05/29/2007
껨
http://www.youtube.com/watch?v=kfy0x7fvldQ
Ϸ
http://www.youmaker.com/video/sv?id=ced4b8662ccf4e99ae3ef01f5367a78e001
ѧԺ
http://www.youmaker.com/video/sv?id=c86dd460250546d6bd9375dba7edc1ee001
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Ѿǵʲôʱ֪ˣֻǵúʱǶһƪè£èͨԣ־һ˵ҳϣèԡٺ˼ֵӣ룺һЩľګˣôԵèʲôϵأٺ֮ܶԼ֮ǰɣżȻֽһƪǹڼڵıϸˣڼѧʦѧ磨̩͡ед룺
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ʱȫһcaf ȥľƷ, ʶsearchһ, βͷ. Ů˵, . Ī.
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ܶס֮ ûмöϰ߳ȻΪûɧסҵģ ǰԼĹԢʮ
һϣ ӣ䲻۽DZ߳ϺӰһûˡΪۣû⡣˼죬ڿӵʱͬ
Ϊ֤ʵ˯ǰڵϷһСڶһûˡ
ֹ˼죬żҲϣģǾ֡
ҼǵÿӰһġϣֻһֻϣǸġǸĸ
http://www.youmaker.com/video/sv?id=0af2a1dd4b6f4e25b7779531b695e8ff001
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xiruixirui posted on 05/27/2007
ǰDzһÿվָͣ°ʱ֣λˡҺҵһλһλװˣͨڳС֪ǸְԱĶʲôﻹһֱ֧ʣͷĸ˻øֱʣ£̧ͷһۣǫ͵ضЦЦּͷԱһװˣֻͣġװġˣܰʱҡҶ£ԽԵÿռӵɫĵˣ
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ϣŵߣ˵غأרΪУΪĵطи馻ֵĴǾҵĹ硣ҳһֱʮꡣ뷢ԴڸɽͻΧȥĺ;γ߸أ馻ڽСأȴ걸صص㣺ɽˮݺᣬ«έźǰDZʼɽľϽ֣߸ߵ̨ףijӣֲԺ¥ǸϷ¥һֱѽֵй··ǹųͨϵ
ezixw posted on 05/27/2007
йһ̥ߵս
BBC
й
ˮţľҩֶŮ
ţͽȽʱѾ֪йеһ̥ߡ
һŮֻһΡ
4ǰȣ룩ˣһӣб
ӺֲһŮȻһӻһŮӢӢСŮݡ
һ̥˹һ̥ߵơ
ǵסǵСũҲûиǴ룬ûͬʱ5ŮŮӢӢݡ
xwOhio posted on 05/27/2007
ʡĿС̶ȫ
(backchina.com)°·һҹܻ,ſΧ˺ܶˡԱȽϲ֣ͣĦǰȥԭʱֵŮڳܡdzܵԭҲҲòȥ,˫һһȥĶȴȤʱΧ۵ȺȻЦּ¼£Թһ֡
˽⣬ŮӣʹһҹܻС㣬һסԱ߾ƵʽԢ˵Ǹ̡оƵʽԢֱһЩǮΪ˳ơ̹ԢŮ˵
lucyxirui posted on 05/26/2007
ݴ˵ϵڴսʱΪԼƯм顢λõء
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һ˿ϡ١ƫƧֲСάȴּҡҡѧҡݼҺõϲдֲͬƷﵽ
sandsexiula posted on 05/20/2007
photo by exiula
桱, Ǹдĺ֡ǰڹһֵĺ죬дǽɾĻҳǽĿ
Ĺ쳣ϰѯʼ۸ʱΪҪһµģǿֻҪɵľͿˡǾ̾æȡò˻ҳϸо
ǵƷԶһµģ۸ܱ˵ģ
Ҫ뿪ˣûʱŶ
dream 070526
7:30,ʶһȽϸӵΡ֮ǰҲбΣ6ѹһΣǣöγˡ
ǵǺһЩһڵλĴʳܶˡڷһҪͳʲôʳóԷġùһҪǮ鷳ͶԱߵ˵ϳˡǼһλģλᡣ
ȻУͬеŮġһסģ˵Ҳˣǵ·ˡ˵ǼǶ¥¥ ѧУǶһ̹
Vengo
http://www.imdb.com/title/tt0211718/
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http://www.youmaker.com/video/sv?id=5e7c65455edf40809f6a27e64d03a574001
qinggangfigo999 posted on 05/26/2007
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tܿ/šϺ
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µҷίҵ˾˾ڱԺԺʿЩʧ
515գҷίҵ˾˾ڱԺԺʿЩʧȻ˽ţǾڶ췵š
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3£пԺԺʿҵ105
и˵ҰѰŪ˵ģҲûҴһеģֱҪÿְʱűӣڸվйͺͿѻʱ䶼ǵġ
ʷĩŸȥггҼҲԶȥˣеIJ˱г˲١糿û˯ѣӾͺ綼ʰͣˡ̫࣬ȭĶͷ̫̫λûз磬һƬ͡
гŷͷܶһƺҲǺͰģѾǰ¶ˡгĹ˿ͻ
guanzhongxw posted on 05/25/2007
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1957ɹһǣа͡䣬ս
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Ľڻ֮һֵսɴ˿40ǰһѧ
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qinggangexiula posted on 05/16/2007
photo by exiula
DanakilƬɳĮסAfarˣź캣Eritrea, ĸԭشRift Valley(ĶǴѹ)ģҲǵ״Ӻ͵ʻԾĵ֮һ, ︲ʵĻɳӿĻɽȺеںƽĵӿȪκĻʯLucy1974ѧڶǴѹȷ֣ϷԳAfar֡ʯ320꣬dzΪȵLucy, Ҳӡ֤˴ĵۣġ֮
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ɧĹעͬʱ˿ںͼƻίԱҲDzһ칤鵽չ顣
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˳ƣɧҵİijְĹְԱͽԱߡ
rzpxw posted on 05/23/2007
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feimingJuly posted on 05/24/2007
Toooouche ˵ʫ˴ѿŽ⣬ʫ̫ˡɴŵ
1) ŵ--ɡķRen-François-Armand (Sully) Prudhomme1839316ա190796գʫˣλŵѧߡ"ʫƷǸе塢ĴҺеؽǻۡ"
2)Լɪ³ǵ¡֣Joseph Rudyard Kipling18651230ա1936118գֻgӡӢңʫ
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żù϶СŴ绰ϼ䡣У塢꣬һӾͻἰ½ʳƷ֮ҲֺǣΪǰɽſڣַ½Ƴǡ
ν½һǷһλ½ŵСϣԲΣֱһң
WOAxw posted on 05/07/2007
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Ӱ֩3ڱƱݣƬ̳û̬δٻƳ֩Ӱ
Ӱ˾³ϯִйֶٶBBCʾ"˶ϣԵġ塢֩Ӱ"Իᾡù¡
֩3ڹӳһĩƱߴ1.48ԪΪʷϹӳĩƱߵĵӰ
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The United Statescc posted on 05/13/2007
DZһ־ı༭ϵżȻ뿧ȣգֺܶྫʵμǺͲŮӰðؿӣλԼЩθȤϵлл
chengwan51@yahoo.com.cn
st dudest dude posted on 05/22/2007
ǿȹ99%͵йİټ֮. ֪λûȤһԼжô.
̨(PBS)վݿԲ鵽(last name)жô. Բ5ϵijڵڼλ. йȵǷȻйϵǰ? Ҳ鵽, (wang/wong)ıտֶٵĶ. (zhang/chang)ıոǴĵĶ... Ȼ, йϵֻͬȷ.
How common is your surname in America?
http://www.pbs.org/pov/pov2001/thes
guanzhongJuly posted on 05/22/2007
˭ǰ˹̹
Сʱʦдģҵ롯Ŀ˵СһʵǸˡ磬Һ뵱ߣݣͱ˵ŮߣƣŵЦţҵIJɷöܻش⣻뵱ŮҺʫˣʱҲûſ֮վֻԼķƺãһŮվںߵȴʲᣬȻֳӡʽͬѧѼһ˷ˣأǾңʱʱǻݵֺͱĹʹ֮䣬ȡ
xwxw posted on 05/23/2007
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1720˵ʱҡּ̨ߣΪŷĸ
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