本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 公仔箱論壇# I! t9 F: v4 z4 P9 r! t: r' _
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If you are not a Physics person, read on and learn a fact of physics. 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。3 C: u, j7 J* e. ^
AMAZING!
6 g9 \, f& x9 F0 e8 ~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。tvb now,tvbnow,bttvb& ^6 P v1 h8 n% K
Even after you see it, it is still hard to believe!
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4 q& |$ W7 W) y' a, P& E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! 公仔箱論壇 H: J6 T$ m7 P9 b# `4 T
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
& _# s# f% u/ k% 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。It 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。" w" h, T* _' Z+ k7 Y" z
/ a; M3 J( P# j3 G- }' d4 [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。The photo was taken on the day of inauguration.
. ^( n5 j0 X" T' q% w4 j. O9 I5.39.217.76To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.公仔箱論壇3 G6 r0 N0 K# U& z5 B6 V/ J
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Question:公仔箱論壇8 R/ D0 c# P; X% v2 b- K2 y& p
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 H$ x" k( m! r+ j5.39.217.76Or just the weight of the water?
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8 G3 U5 G5 R( S: t公仔箱論壇Answer:
; I5 w& s8 e) Y$ w- N. K6 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。
" `1 y! S% U: r4 m3 n d5 o+ o0 zIt only needs to be designed to withstand the weight of the water! . O: q7 w! W, c6 U: f9 Z5 |
Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded5.39.217.76( v/ i3 e- p. p# @- Y
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. X# R5 G0 t6 g& Z4 z3 BThe Incredible Magdeburg Water Bridge in Germany
2 f' R# j- P5 H. a' H1 H% @; ~The 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. w0 D* \" @5 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.
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, b: k& x, ]3 I" a- n. G! xConstruction 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. 9 X. v6 W7 }2 G7 [. n0 G0 K; @2 s/ ]
% m& n& A0 J0 H/ _2 J, M8 bTVBNOW 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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$ G5 E3 N, Y$ k: C. x# ~, N1 j* lTVBNOW 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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- t0 z; t7 g' {& k% _/ l$ R. E公仔箱論壇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。% ]" x+ A2 z1 R; C0 o
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