本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 5.39.217.768 @; j; A2 @6 j/ A7 P
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If you are not a Physics person, read on and learn a fact of physics. 5.39.217.768 o+ P t/ L6 x! g' r7 `9 W% ~5 }
AMAZING! 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 Q- s, ^& N7 `/ {( L1 ]
r2 u p7 W. c! QTVBNOW 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。Even after you see it, it is still hard to believe!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。) c- r3 u6 y/ {5 ~$ b3 K
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3 i, j8 h3 ?/ v1 i, F# I9 K) Q1 tMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
# F" [4 n* j6 E' G8 p公仔箱論壇This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 5.39.217.761 S1 w/ n( Q, F) L- c4 _
It is located in the city of Magdeburg, near Berlin.公仔箱論壇3 }2 c1 W) j# Q, {9 R* }' m
& i# r: F& J9 W8 r* f4 p% l. C% YThe photo was taken on the day of inauguration.tvb now,tvbnow,bttvb0 h4 t9 |/ {$ x4 w; S! m
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
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Question:
6 `, O" E/ @' ]& H! d* I& Z w- FTVBNOW 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。
5 ^+ \4 r1 n7 r公仔箱論壇Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,/ |( p( o) T6 \2 I/ j
Or just the weight of the water? 1 M5 f! W# y+ J3 R
; Z3 O _9 ]7 X# }& e3 btvb now,tvbnow,bttvbAnswer:
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It only needs to be designed to withstand the weight of the water!
: m/ V' B8 A% s1 I# J, [4 ]' y- L公仔箱論壇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。" Z& ]& J2 h: x8 A+ R4 @; K2 Z, x
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。' A9 U/ ^; W! F
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The Incredible Magdeburg Water Bridge in Germany3 E2 X* i; G0 u5 |; g5 T @
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.
1 c& ~9 C" I* h) 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。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. 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。/ L; ~3 s! z0 [
( }) Z; |8 x rTVBNOW 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. 5.39.217.76$ W4 @+ n7 v1 i& w1 W
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/ V0 q2 @. |0 N( z& F; S( 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 d; w5 c7 _( e. F5 x: Z
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