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 公仔箱論壇- A+ g! ?1 \+ \5 c
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If you are not a Physics person, read on and learn a fact of physics. 7 ?: g2 l' S: p# i$ H5.39.217.77:8898AMAZING! 公仔箱論壇3 R% h" Z) N6 W+ x 5.39.217.77:8898+ {6 ?# Q/ U" B
Even after you see it, it is still hard to believe!, P' N+ Z `. c1 ` [attach]1486499[/attach]tvb now,tvbnow,bttvb/ \+ ^# a( E* C' G( }
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5 ]3 w; [5 l; Q8 F- x- U( v3 K( R5.39.217.77:8898This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. ( O8 J, F) t/ E8 |* C7 fIt is located in the city of Magdeburg, near Berlin. * V0 b$ |1 F# ktvb now,tvbnow,bttvb & A! k2 C7 t/ A$ t! GThe photo was taken on the day of inauguration.+ K+ a8 A. T, G3 u4 o; N6 f% N+ K
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:88981 S2 e; x" O& k% a8 F" B! h" I
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Question: 7 L/ x, O$ y, y+ v G7 c5 ^6 b$ [3 s* F( W4 ^
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, s' N) L4 i4 q1 eOr just the weight of the water? + U. c& [% F3 y+ @公仔箱論壇% ~. C3 ?# U7 A1 @
Answer:5.39.217.77:8898 s8 t* S$ W( A$ F% ~$ c# x
8 T& E: x* [6 S! U) J公仔箱論壇It only needs to be designed to withstand the weight of the water! 5 E- u- S0 R2 {$ S# x7 @
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 " i, L8 U# x+ }* i9 A) C+ _公仔箱論壇4 J9 [5 B4 F) U% ~$ d
Q% @3 b, ^- W& g5 [& N公仔箱論壇The Incredible Magdeburg Water Bridge in Germany # i5 K3 h2 n3 Z( r3 h7 g+ m5.39.217.77:8898The 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.5.39.217.77:8898' Y6 P2 X1 A: q
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. 3 ]# U1 q3 t- D( W% 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。 7 ?8 Z$ g# Y6 K- D& c( i6 h公仔箱論壇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( i& n" @2 V- B$ T# O; D
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2 E' Z$ a# T0 Q5 F" Q) I公仔箱論壇[attach]1486500[/attach]公仔箱論壇0 _, _ j3 ~, m# j, o. k7 j% d) {3 P# W [attach]1486501[/attach]5.39.217.77:8898- w: @8 g1 J; ?, q [attach]1486502[/attach]7 U/ b/ n9 { a. f; @7 n [attach]1486503[/attach]5.39.217.77:8898- F) J0 V; y/ C) }* z2 k: x [attach]1486504[/attach] . W& [3 X+ ~- ^4 ~4 L, m6 X[attach]1486505[/attach]tvb now,tvbnow,bttvb; F" q0 R5 Q& N4 K+ h
; I0 f, j6 O) j" r 作者: busyfun 時間: 2011-10-4 11:33 AM
