本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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8 d- h6 u% v' w0 z' [$ stvb now,tvbnow,bttvbIf you are not a Physics person, read on and learn a fact of physics.
- z! j9 Z/ A8 [% `$ P: J Ltvb now,tvbnow,bttvbAMAZING! 0 J! z9 i+ ?" ?
9 N% P7 i* V5 w( _% stvb now,tvbnow,bttvbEven after you see it, it is still hard to believe!- d2 J$ n3 m% s0 M
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4 A* C9 q! N5 S V0 R0 M! P5 Ktvb now,tvbnow,bttvbMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb# [2 Z* h% J7 H
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
* H. C" E- {) w" `: e' t* v9 GIt is located in the city of Magdeburg, near Berlin.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。5 L" s, {7 o( ^6 c
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The photo was taken on the day of inauguration.
; \* G3 V1 z; J/ y* l# n. JTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
7 j9 W: ]# \ z8 UTVBNOW 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。; n% v' q5 w" V
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
m! [2 K- `' T! sOr just the weight of the water? 4 s3 M5 e$ T4 s1 H
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Answer:
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It only needs to be designed to withstand the weight of the water! 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。: Z4 j! {. U9 [. x- g
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
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The Incredible Magdeburg Water Bridge in Germany
& G* o8 d; b3 ^ j! p, [" B( N5.39.217.76The 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.
- F9 T4 L3 Y3 \$ Q; z/ vTVBNOW 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.
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, Y# ?, f- ~) t& f }! qConstruction 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.
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9 i4 R8 Z' M0 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。
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1 U& c3 Y: y( d5.39.217.76公仔箱論壇" P9 `" U- G" E# b: w3 A: a' k5 {
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