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 " e+ B+ p7 x. T8 O公仔箱論壇公仔箱論壇 m% e. l9 C" z5 Q' L+ f8 d
If you are not a Physics person, read on and learn a fact of physics. 7 H" a2 f5 @3 |4 l: h
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。, U% f, m+ A9 t8 Q; D5 K * s% ^3 C6 H5 `1 K公仔箱論壇Even after you see it, it is still hard to believe! 4 c2 L0 M/ J+ E/ q5 s {[attach]1486499[/attach]tvb now,tvbnow,bttvb- W" I A7 ~$ w
9 m0 M+ |- I$ s/ b8 T/ y8 i公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.762 a0 e, `; P+ I5 L3 s; f
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ( b. c$ a7 @$ @8 k! D- X* }, ?
It is located in the city of Magdeburg, near Berlin. 4 B1 i9 T. T) b9 c% S+ N: Q* w 0 b* Z4 V$ Y7 t% W- |7 ~1 d* L% v" z公仔箱論壇The photo was taken on the day of inauguration. 4 v: B" ^5 `( f6 Z* Z# r3 |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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists. 3 \# ^5 V" i P0 p& V* o- [2 p. `公仔箱論壇 ) v* m: C' s% J7 W$ w4 RTVBNOW 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。Question:公仔箱論壇3 c9 R" j9 \* O
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, 2 @: c( `1 v6 ^9 d1 V, H& h4 C公仔箱論壇Or just the weight of the water? 8 h: E. a& n# V0 h8 }0 i- C! B0 H
2 m6 ^2 r, H. s0 B: l公仔箱論壇It only needs to be designed to withstand the weight of the water! ! n o* q# h% N2 h5 U5.39.217.76Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded ( Y# @5 _! h" \8 [( s/ ?' B! N/ f5 u3 ]% P& b+ J5 ?& [2 f
5.39.217.76* |. Z9 M. i6 ]: P+ H The Incredible Magdeburg Water Bridge in Germany ) \3 g3 @/ n4 M# C4 i$ sThe 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.公仔箱論壇+ O/ w& `- G! C8 A
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. . t' _& z7 c2 u s- Q& {5.39.217.76 1 ^2 [0 Q. U4 N) p$ h/ e8 cConstruction 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. 7 n! O1 w. g+ E, ~) U" P& u' f9 I2 X/ {7 I' ~/ g/ O
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。, i! F% b3 [& e