本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.76) K6 l/ m3 ^/ U
, N* j _9 T9 z3 ?2 p5.39.217.76If you are not a Physics person, read on and learn a fact of physics.
! { @% W* Y3 j2 k4 I# Q0 H+ x! R$ o5.39.217.76AMAZING! 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。4 w& D% |* O: G
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Even after you see it, it is still hard to believe!* w. d6 m3 i& T! s) P1 D
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9 \/ H- o) D$ W9 E) TTVBNOW 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。Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 公仔箱論壇! w6 x. s! H4 H
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇0 `: J5 C4 c; N9 O4 I
It is located in the city of Magdeburg, near Berlin.5.39.217.76/ ]7 F2 w# [' o1 b- X
( J5 W* z. X0 f# {, r- z1 F( {' F; }( h+ P公仔箱論壇The photo was taken on the day of inauguration.
& ~' Q2 s k! w+ d- DTVBNOW 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:公仔箱論壇/ |& k, K5 v* n( O3 _
: x5 A0 `; X X9 E1 ?tvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic, M0 |9 T9 R6 R- n# C
Or just the weight of the water?
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6 d5 q8 K/ b3 JTVBNOW 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。Answer:
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9 I8 @5 {( }5 a1 J3 Etvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
& |2 U' b8 ]% n- S7 j1 {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。Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loadedtvb now,tvbnow,bttvb# Q& a1 Y* O0 P+ O ^
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8 R, j+ v: L: ]9 M0 V2 ~The Incredible Magdeburg Water Bridge in Germany
- y3 l6 G( o9 N- U2 S" z7 ?, ZThe 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.
^4 v* ?) s6 r/ x; e; xTVBNOW 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 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. + J* t7 ^! F1 h9 o4 i& y9 Y
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。+ k' Z- V5 y; i9 x' T8 Z/ d
Construction 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. tvb now,tvbnow,bttvb$ f+ | [; `6 N* A
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% L3 W) \1 C) a+ U公仔箱論壇tvb now,tvbnow,bttvb+ p6 U O$ e) O
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