標題: EVER SEEN A RIVER OVER A RIVER? [打印本頁] 作者: lilitan008 時間: 2011-10-2 10:09 PM 標題: EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 Q* ?8 j1 ]' Y , A+ G' K) c _) J5.39.217.77:8898If you are not a Physics person, read on and learn a fact of physics. 5.39.217.77:88980 {3 I8 p# e' x. D5 |
AMAZING! TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。7 u4 p/ f& ?- y) r, `; C0 @5 ` * w6 A& _' p( ITVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。Even after you see it, it is still hard to believe! 1 d% X% X% {8 M6 E1 @4 @8 t! D0 z公仔箱論壇[attach]1486499[/attach]$ E. _2 p3 T+ K7 F( ^
) p. D2 s7 E+ h, `" q0 ~% K5.39.217.77:8898Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! ) E' a) v) B; n5 R7 ]tvb now,tvbnow,bttvbThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. tvb now,tvbnow,bttvb2 Z9 R# b& M1 }' J3 q& p% |+ U8 i
It is located in the city of Magdeburg, near Berlin. . y) q: H. h+ t; x- Q5.39.217.77:8898 . x& k# i C( d Q! `9 wTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。The photo was taken on the day of inauguration. 5 T6 _8 H9 ^& X9 g, t: \公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb' F e) L5 p" H- i
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Question:% q2 M, u, o/ g7 Y! l8 z+ a2 a1 R
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,/ i+ \# i& `1 s; n9 D
Or just the weight of the water? 5.39.217.77:88984 u9 W1 B2 I. r! R# G
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Answer:/ t2 m9 g, b6 W3 J# m
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It only needs to be designed to withstand the weight of the water! 5.39.217.77:88987 U' [' H; p: H6 M+ \/ h
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded 2 R; p+ ]2 Y$ h4 d% p公仔箱論壇公仔箱論壇2 D* b$ Q& O$ V- F8 N4 N
5.39.217.77:88980 O, w; c$ \# i8 V6 N& h* A1 T9 m+ ] The Incredible Magdeburg Water Bridge in Germany; y B! Z& l9 G O3 l
The Magdeburg Water Bridge is a navigable aqueduct in Germany that connects the Elbe-Havel Canal to the Mittelland Canal and allows ships to cross over the Elbe River. At 918 meters, it is the longest navigable aqueduct in the world. . }( K7 @( Z/ x# r4 q3 O# @ D5 A5.39.217.77:8898The Elbe-Havel and Mittelland canals had previously met near Magdeburg but on opposite sides of the Elbe Ships moving between the two had to make a 12-kilometer detour, descending from the Mittelland Canal through the Rothensee boat lift into the Elbe, then sailing downstream on the river, before entering the Elbe-Havel Canal through Niegripp lock. Low water levels in the Elbe often prevented fully laden canal barges from making this crossing, requiring time-consuming off-loading of cargo. d/ m2 ^/ h9 X n1 w, A5 @tvb now,tvbnow,bttvb 3 ~; J' e7 Q% n: p- F! @/ b5.39.217.77:8898Construction of the water link was started as early as in the 1930s but due to the World War 2 and subsequent division of Germany the work remained suspended till 1997. The aqueduct was finally completed and opened to the public in 2003. 公仔箱論壇' i) H3 g* t' C
* u! Z# d7 x' s$ V0 ?+ U+ r1 s公仔箱論壇8 t. e: M3 Q* g& d' Z0 j/ v [attach]1486500[/attach] : J7 j1 F8 \1 U7 ltvb now,tvbnow,bttvb[attach]1486501[/attach] 9 ]9 p0 g) [! B6 @0 V5.39.217.77:8898[attach]1486502[/attach]TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。! ?, [! \+ `% f/ p' V: H [attach]1486503[/attach]5.39.217.77:8898: r( `2 R' \8 k. t% v [attach]1486504[/attach]% [+ o F) W f- ] [attach]1486505[/attach] ' A/ N4 Z |5 W( t2 cTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。公仔箱論壇* M$ t: N& W5 |. C$ E2 B% m 作者: busyfun 時間: 2011-10-4 11:33 AM
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