本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
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& p% O, F% Y$ E* N- |' eTVBNOW 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。If you are not a Physics person, read on and learn a fact of physics. 8 B* @5 I8 b1 A6 Y8 x
AMAZING! 公仔箱論壇: y0 O8 c4 q( a9 L* U8 W3 O+ D
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Even after you see it, it is still hard to believe!8 G5 g+ P( T4 Y h- ~: ]& b' H; @0 x
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Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! : @# E) N: f, m w, d/ ]
This 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- J1 M" m! R# n" _9 `# A
It is located in the city of Magdeburg, near Berlin.5.39.217.77:8898: N) ~4 ?1 |# j$ {( f1 N9 i3 l
2 O4 {) n3 Y, S5 mTVBNOW 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.tvb now,tvbnow,bttvb0 x* ?7 {# A2 N
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
8 M! D0 i9 ?6 i& M7 ]6 k, Y% TTVBNOW 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& y7 T4 O& B3 G8 W/ `4 E
Question:5.39.217.77:8898! O1 v$ h& l0 p7 {1 I8 r
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
0 t1 j# {6 V. Y2 J5.39.217.77:8898Or just the weight of the water? 3 J, U' _- X- I9 S2 a4 v
1 M& |. p# W% e- btvb now,tvbnow,bttvbAnswer:
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8 X0 T. Z2 [% r% ^; dtvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb, q2 _9 M0 F- r4 R
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。: I* F0 {3 o, p8 b8 c) }6 H% d
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The Incredible Magdeburg Water Bridge in Germany
9 R& U5 f" o7 K. _- C( ~3 wThe 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.
0 N1 n" ]8 L6 o9 t, Y- h公仔箱論壇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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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& e, b8 `- \1 w7 R4 \* |
" s* O R r4 Q+ v5.39.217.77:8898TVBNOW 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。) j& ]4 U0 l6 t1 E3 L/ B( k
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5 f& }/ }2 z0 u2 [7 Qtvb now,tvbnow,bttvbtvb now,tvbnow,bttvb( E" Z& `1 j1 r9 l3 {' ~
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 `3 c; {+ ~ G1 U" S
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