本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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If you are not a Physics person, read on and learn a fact of physics.
- ~; |% A& `; L5 L- w4 x( m$ STVBNOW 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。AMAZING! 5.39.217.77* W# E) s, }: S7 V
4 t7 a/ [ o+ M$ w9 r) 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。Even after you see it, it is still hard to believe!
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
; B0 v3 W2 D( D2 |9 Ztvb 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,bttvb% G$ f, x- r3 T# H0 a1 e
It is located in the city of Magdeburg, near Berlin.
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The photo was taken on the day of inauguration.5.39.217.778 x4 W4 Q0 }: K' x
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists., l; l$ ]7 `) w9 N& K( F
3 {7 q: x( C7 l3 l) F5.39.217.77Question:公仔箱論壇3 r) Q, G: k& _
/ y( p1 D/ o* c: rtvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,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。8 c5 h) T; O( l4 D: U1 C2 }
Or just the weight of the water? 公仔箱論壇7 o# E- e) o- P- D$ e+ N
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Answer:
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$ o9 b) m) ~/ j" N3 `It only needs to be designed to withstand the weight of the water! 公仔箱論壇3 ^& U3 X; ^/ b; ?8 E6 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 loadedTVBNOW 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。0 ]- ~6 h4 S* j- M b' r
公仔箱論壇$ ?( u- E4 [1 C4 d3 @
) d0 k4 c4 I7 n5.39.217.77The Incredible Magdeburg Water Bridge in Germany
5 d5 T- Z4 P) N6 h- Z" ]5 r% C5.39.217.77The 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.
& I* r3 w/ b" D! [5 ]) Qtvb now,tvbnow,bttvbThe 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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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.
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# p; o; y. \3 A/ c" oTVBNOW 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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. u3 X% B4 m% C- W, J# Y/ 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。tvb now,tvbnow,bttvb+ L$ Q0 w. c; P( I/ I/ Z: k9 j4 E
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發表於 2011-10-4 11:33 AM
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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。 o' X2 L6 I3 c* U. @
發表於 2011-10-15 09:35 PM
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