EVER SEEN A RIVER OVER A RIVER?
本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
+ \5 a1 Z- a' n' A" Y9 f公仔箱論壇/ U' W* c1 |3 H. ^/ r& w( ]. `
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) G% t' Q: n* Z5 y
AMAZING! tvb now,tvbnow,bttvb% U4 {9 u! G( Q/ E
5.39.217.77:8898, [% Y5 i2 o2 @4 p+ L' L
Even after you see it, it is still hard to believe!
* |' l- _2 ]3 R3 f2 v- e) }. HTVBNOW 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$ C* }) c0 l. M/ Q2 M" D
' {% T$ Q4 Q+ _ T2 `Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
* K! W. W5 n/ _: L) f% K5.39.217.77:8898This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
, e" r& b) }) J/ Y5 r$ |9 h. w5.39.217.77:8898It is located in the city of Magdeburg, near Berlin.5.39.217.77:8898! ^1 @4 ~0 R- _7 l
5.39.217.77:8898 `* W. _+ W. H2 v6 y' H, k' T1 I
The photo was taken on the day of inauguration.
- R% n; I% g# T# oTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
1 X0 S m* ?; U' Q公仔箱論壇公仔箱論壇) O q0 W* u- ^. g0 l9 x/ }
Question:
/ S) c$ v @& y5.39.217.77:8898- R' c& L T" ~4 c5 s
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,5.39.217.77:8898; x& m5 B5 P1 e5 a. j( q: E! U
Or just the weight of the water? 5.39.217.77:8898! k% M I& m% J, z: H d/ S$ B
! f1 B* G9 \0 K0 Q% G) vTVBNOW 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。Answer:
1 P$ L3 k s" D: Z2 V+ ?% G; @' f& S7 ^9 g
It only needs to be designed to withstand the weight of the water! tvb now,tvbnow,bttvb3 J+ x4 _2 y W7 W$ P) T: E Z: E
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1 l. q9 m: V ~" p
+ A* C6 t7 V1 R7 o' C
2 h- w- s* B0 A# z8 I" N公仔箱論壇The Incredible Magdeburg Water Bridge in Germany F ?! c; r2 ?
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2 u& Y' O+ f* B/ m/ h+ W
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, m$ ^5 j% N6 Q% `/ G( _5 T! j
! T( f. |" T" a" u1 aTVBNOW 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. 5.39.217.77:8898- {* C3 i" H3 R$ r* |! E
公仔箱論壇% C: `5 L+ a- i+ C
/ o# w! G9 p3 T, e
tvb now,tvbnow,bttvb4 Y$ B6 t! ]5 _
# Q' t; o/ T- V5 @' l
5.39.217.77:8898) |5 `+ p# i1 z; Q( q
. e$ K" s# z" @/ N5 \4 kTVBNOW 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( O5 P& y S# U; @tvb now,tvbnow,bttvb公仔箱論壇8 `7 h+ x/ w. F/ R2 @5 `
5.39.217.77:88982 L+ `! S1 j( H9 q4 F( @) z" Q
|
附件: 您所在的用戶組無法下載或查看附件
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
2 y3 P7 I6 t. ^. y* S
發表於 2011-10-15 09:35 PM
|