本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯 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。 [/ z9 ]0 A5 ?6 E: s
5.39.217.767 p( I9 X7 G0 l: ?
If you are not a Physics person, read on and learn a fact of physics. 5.39.217.76; W* N8 e4 z, M+ C& O y
AMAZING! 公仔箱論壇: M0 m. ^$ L6 m
. y3 X! b1 J+ s1 ]0 R' o$ ?: EEven after you see it, it is still hard to believe!5.39.217.765 J4 |% u0 E7 U* X m& ]
5.39.217.76. o- H8 c; S7 ]
+ U7 w% M8 L3 A( N. _3 Q1 N- Z% LMagdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
8 N6 e$ O- O- i! D. [& T5 RThis is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
# Q9 A( Q6 |+ }% I+ X( a7 `+ lIt is located in the city of Magdeburg, near Berlin.
, F% s4 C/ t+ X" }9 H5.39.217.76
6 C* q; O& n3 C# x1 G$ E( rtvb now,tvbnow,bttvbThe photo was taken on the day of inauguration.
3 X! L4 c# [0 F8 ~5 STo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.5.39.217.76( t0 L4 d' P& n
2 g2 g( I: E3 M
Question:
, E, f5 c( F7 b+ q" J5 y/ A
6 a) w8 q" d! i5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,公仔箱論壇' |. o7 {' H9 J1 R) G4 G9 ]
Or just the weight of the water?
3 X- X5 Z- m0 {3 T4 X公仔箱論壇) H, |/ z/ |1 H( |3 a' [" e
Answer:9 w# W/ s, k) Y/ x' ]5 ~; x- k8 H
' Y9 l/ q, u- H+ q& ~3 U- tIt only needs to be designed to withstand the weight of the water!
* a s8 c: x# K, ~, |% r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 loaded9 }4 k }( r0 _2 T' D5 q2 K
- E% d$ F2 @5 U4 K8 H' I! zTVBNOW 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 F% r5 f! t, _& U5 z; S9 R" o5 M
The Incredible Magdeburg Water Bridge in Germany
6 a. A# Q9 E3 e$ n; kThe 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+ O4 X: l/ n; t2 m9 \
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.
& V. Q( \! m" ]9 n% w: m: ~5.39.217.76
. D7 I1 K# i8 K6 f) D# l公仔箱論壇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。: r; n1 Q2 D- x$ ^. q9 N: `6 O
( n4 B( ?* [) x! }
% X* f! N- S3 \4 l6 y" y! i: @5.39.217.76
) C7 {+ b5 l# L% m
3 @2 Z0 m2 r7 ~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。
4 k; v- j+ Z( d. c p5 \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。5.39.217.76! l. F/ s# q2 v2 }
tvb now,tvbnow,bttvb8 i" f& p+ g+ t8 G& o. v5 E
1 t- _" |: c t- L5.39.217.76* H8 Q+ P) x( | p" d, g; e3 B: }
|
發表於 2011-10-2 10:09 PM
| 
發表於 2011-10-4 11:33 AM
| 
發表於 2011-10-15 09:35 PM
|