本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 tvb now,tvbnow,bttvb7 C. e: g: n+ _3 K% o
! `0 I- X0 q0 c
If you are not a Physics person, read on and learn a fact of physics. 0 I! X" ?3 b5 f! C" `
AMAZING! 5.39.217.77:88985 R' x" v; ^" n1 v. y/ H
5.39.217.77:88985 m4 d* ~" {4 g8 B
Even after you see it, it is still hard to believe!
' r. H1 l& @8 h. s
: U7 K% [! z+ b/ Y! y, A* @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。公仔箱論壇0 U, y5 w! p. @# |: s
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
5 l! V$ r7 t# ^' e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. ' L$ L3 o) t6 G1 M8 ~% G" O
It is located in the city of Magdeburg, near Berlin." u$ h/ H U" c8 k1 b
& d! c& j: [) l- w4 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。The photo was taken on the day of inauguration.
, s! `3 o9 B. |& ?6 q1 g7 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。To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.tvb now,tvbnow,bttvb! y0 ~0 o0 B, O# A1 w+ F* o- V
7 J% V; [8 ~9 ~. z% C6 B+ a
Question:
: w9 _7 Z) b# m/ C% Z
% ^* {, `4 \5 f0 A. {( ~0 H ptvb now,tvbnow,bttvbDid that bridge have to be designed to withstand the additional weight of ship and barge traffic,
! c. A( o5 V2 \: F0 {( Y# P7 Htvb now,tvbnow,bttvbOr just the weight of the water?
% \! {# b( v# ]! ?# K+ q1 x+ W公仔箱論壇
! M& w5 S: n. k9 lAnswer:& B4 {7 a* R7 \2 B3 Z& A p
- w+ S r$ I3 P# M- k: `7 K3 }
It only needs to be designed to withstand the weight of the water!
% F6 M& t! \* {" [5.39.217.77:8898Why? 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6 J) N) F# _" S7 ^. z
公仔箱論壇* s$ z- x2 W4 S
) H4 d: D$ Z9 R7 i3 z) @The Incredible Magdeburg Water Bridge in Germanytvb now,tvbnow,bttvb" a5 M! q! \) u. ~% j
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.
/ J( `2 g! _( h% z6 zThe 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.
: P6 w" g% k" b* ~& Q8 T5.39.217.77:8898( B9 W( S# I; Y
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.
- j6 X7 O9 ?) G E8 vtvb now,tvbnow,bttvbtvb now,tvbnow,bttvb6 }5 F: N* a3 w% o: p
0 |2 s4 O: e- T
' r! z2 [6 S; k; c" J5.39.217.77:8898
# X0 G+ @+ X5 F& b- l. z0 r
0 `* m6 ], V: s2 _5 J$ dTVBNOW 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。! ?- s0 X0 I8 v2 v4 V+ ]* d* R
/ W$ |& J6 E; K
/ v3 P" }# W$ G3 u* U. F公仔箱論壇
J3 q! J U/ O/ ?% S, [5.39.217.77:8898 |
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
tvb now,tvbnow,bttvb' r& J4 r+ m! ^+ M1 B7 G
發表於 2011-10-15 09:35 PM
|