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 6 [$ U5 B# @9 Ctvb now,tvbnow,bttvb 2 U* x6 u/ t. nIf you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇$ \) Y: x3 S$ C; V/ k
AMAZING! % S* o5 }( I7 \( i0 A( v6 t! ?( gtvb now,tvbnow,bttvb5.39.217.77:8898) ?! }; w# U2 U# b! ]# P( V4 R! h
Even after you see it, it is still hard to believe! % x* u* n5 Y" @- i7 o) P[attach]1486499[/attach] * K& x$ I5 i0 d: Z; a. g& ^ ' M+ ?+ m3 `, ^Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb9 }7 c7 \" k+ N7 R* O- |9 J8 M$ Y
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 公仔箱論壇" |; V, H) o& w: j
It is located in the city of Magdeburg, near Berlin.tvb now,tvbnow,bttvb) q* d8 {' j! @8 `6 S9 V" f+ ?3 F
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The photo was taken on the day of inauguration.+ y" P: H. L* u. F4 J, V
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.77:88988 V+ ?5 t$ ^+ y% Y
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic, 2 @# X: ?7 L+ r4 I- T' l4 ?公仔箱論壇Or just the weight of the water? + y% D' T; ?. J5.39.217.77:8898TVBNOW 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。* \% b! l8 X( G
Answer: & O% W2 ]0 q4 b, S# \8 y7 \* T 8 l5 O; ~9 O% | ZIt only needs to be designed to withstand the weight of the water! 5.39.217.77:8898) W/ \5 G( |2 h
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公仔箱論壇& l+ g; {+ I, E. I tvb now,tvbnow,bttvb& t m& e( ^; g: K% _
2 y& N5 m* t# ?5 I: N N公仔箱論壇The Incredible Magdeburg Water Bridge in Germany5.39.217.77:88987 I2 o& n; `1 \# N, O
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.公仔箱論壇1 d; ]2 @% m4 C9 m# }( Q$ e9 z3 P; b
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. tvb now,tvbnow,bttvb- }7 ~& Y' I x' V! z* v. Q
7 C1 ~5 m- N" k1 b& }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。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. 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 T) ^4 V+ S0 X7 _* D/ O% \
