本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
! s2 y0 |2 ^& u* WTVBNOW 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。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。; b8 R6 H! w% N M4 K7 w; L4 q
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。* K O) j0 q+ n9 `$ W+ x3 q5 h
AMAZING! 公仔箱論壇4 e. E$ J. p& ]4 `, ?! 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。$ O/ ]0 M- z+ i% n; J, k4 y
Even after you see it, it is still hard to believe!
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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。9 w0 V2 U1 ~" s* t
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! / h; V9 V: z: z% J
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
( o' L- h. ]+ I7 _0 n4 l! h jIt is located in the city of Magdeburg, near Berlin.
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, k) V9 f. t* N9 u2 aos.tvboxnow.comThe photo was taken on the day of inauguration.
: E0 e- l0 V4 l4 k' N% Htvb now,tvbnow,bttvbTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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6 ?+ _& Q* G) R+ z0 F- etvb now,tvbnow,bttvbQuestion:" O- v) M6 `. D4 \
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Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
2 R/ q' T5 v# g# S# p; V8 Ttvb now,tvbnow,bttvbOr just the weight of the water? : U% i7 o4 I# N0 h |
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Answer:
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It only needs to be designed to withstand the weight of the water! 3 l3 M% x5 J' o2 a/ i+ S" H0 h2 I8 u
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
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2 y1 Q/ j; o% b; ^2 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。
4 [4 m i& ]! u/ y. |: g* S" m/ [公仔箱論壇The Incredible Magdeburg Water Bridge in Germany
) P: Q* b+ ^% @% @2 Y! GThe 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2 b* O, k0 h7 |7 z0 y
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. 公仔箱論壇& {, ^3 b, m; c
/ M$ o( G0 \- }, Sos.tvboxnow.comConstruction 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.
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/ p/ T* U% T# z" k. }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。
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* E; G! [+ T4 oos.tvboxnow.comTVBNOW 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。4 X9 x" e) Z, ~* C% @' m
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