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 + H S/ V4 X7 P4 s, x. n& i
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If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇- n% }+ l5 T: b) P- Y8 D
AMAZING! 公仔箱論壇2 _6 @" i2 U0 I* E8 Q# h: V7 ` 0 H7 }! H" \1 [公仔箱論壇Even after you see it, it is still hard to believe! % I) q' s! T0 J& S5.39.217.77:8898[attach]1486499[/attach] ; t7 _9 n9 T6 X5.39.217.77:88980 v% L4 w' g1 a2 u: Z
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! $ a }$ o6 `9 Z' m' v. V6 C公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ; ^% C, L2 \7 Z; v公仔箱論壇It is located in the city of Magdeburg, near Berlin.5.39.217.77:8898$ x q7 X3 A4 ?
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The photo was taken on the day of inauguration.5 {7 t; N! Y1 y6 F# a% O; ]
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. ! s: v) n% g) e% b5.39.217.77:8898公仔箱論壇: G/ F( W* i% b8 W8 V. f
Question: $ o/ h' H5 |! g$ L( F$ |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。 + \2 ^ C( ~: k# z- `公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,) \- t M8 x9 {2 z6 Y
Or just the weight of the water? tvb now,tvbnow,bttvb3 L: q; ~' _, z1 F0 O$ A
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Answer:tvb now,tvbnow,bttvb& n$ M& y3 d6 Q
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It only needs to be designed to withstand the weight of the water! $ |- [1 A/ O5 yWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded * z4 c+ T3 R+ D, D9 w公仔箱論壇6 d, O6 N3 I0 d3 Q
9 y; }* R+ k( c2 O The Incredible Magdeburg Water Bridge in Germany ; I2 e5 l# {9 b, ~* d6 P; ^# BThe 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. N3 c. `% ~, {5 I* Y) YThe 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. # ]& b+ }9 g1 zTVBNOW 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 j9 M4 w2 P7 ~tvb now,tvbnow,bttvbConstruction 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. z e+ Q2 ]4 F* S6 T$ Q5 W& ~公仔箱論壇 * {) _. w: e! Stvb now,tvbnow,bttvb _6 V% ~ P& F" f, R! f2 Z [attach]1486500[/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。1 g/ D' \, Z7 h# k [attach]1486501[/attach]5.39.217.77:88988 \0 c* j0 m. I7 R2 k$ p3 ^ [attach]1486502[/attach]7 U4 q0 T- P1 g [attach]1486503[/attach] . G3 r+ ^. U x" Y4 H5.39.217.77:8898[attach]1486504[/attach]( y) Z, f- \. d. s \: O$ i" E [attach]1486505[/attach]2 }# r$ o# d+ ~7 \( j2 Z
tvb now,tvbnow,bttvb* b c8 l* i% w f/ Q$ l 作者: busyfun 時間: 2011-10-4 11:33 AM
