本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
3 M- F9 b' G! ]8 {) R0 G6 Y公仔箱論壇7 p! h. @8 h4 x; ^+ {
If you are not a Physics person, read on and learn a fact of physics. 公仔箱論壇6 i3 j# C( H+ }0 |
AMAZING!
+ v/ F3 I l( R$ n f9 I4 h; d- h- y4 cTVBNOW 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。tvb now,tvbnow,bttvb$ K8 O4 y Z0 ]* U; s' k H
Even after you see it, it is still hard to believe!
: p( l2 `) b7 P% [/ }, pTVBNOW 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4 X& g m# b3 f& \( t
/ B$ O# j0 h! b8 V公仔箱論壇Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering!
1 ~% q. L, L/ v5.39.217.76This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project. 0 ?3 Y, P. C$ ^% c4 n7 N$ R. [
It is located in the city of Magdeburg, near Berlin.& R" }+ x8 l3 J F6 K" t
5.39.217.762 v& L" f' U0 t' b6 a
The photo was taken on the day of inauguration.2 V5 |$ g2 h7 \5 p0 V
To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.
8 N* |! o }+ d) u8 e
2 _8 r! p9 p( q- x. Q5.39.217.76Question:
1 a" v8 I8 E, P$ h' nTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。5.39.217.76' p) |, s+ P0 t4 m4 L4 `& j$ a
Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,3 v7 a2 n L+ `
Or just the weight of the water?
3 z% n5 l" H! z, n
7 [! I" s* I0 f1 V5 Qtvb now,tvbnow,bttvbAnswer:公仔箱論壇( c4 U: }' n; g5 K" J7 ^
: o' y6 u \* l1 e6 `9 x* btvb now,tvbnow,bttvbIt only needs to be designed to withstand the weight of the water!
+ N& A, b9 o& E4 k& Q& X+ O. {Why? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded公仔箱論壇+ P8 E9 Q4 j; Q1 n& ?' ^" C
: i6 l" {- |& \) \. s3 H3 f1 O
( h0 ^% ?" p 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。The Incredible Magdeburg Water Bridge in Germany
7 C8 S" i* W# b5.39.217.76The 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.
/ @. o' n+ s1 G8 T* z+ ~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。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. ; |2 F2 n# @. N
5.39.217.76% n: k# N4 U# T+ e; l
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.
3 t6 R. X2 q+ A3 Z2 s' T, ` Ftvb now,tvbnow,bttvb公仔箱論壇1 A7 {# t5 `% n2 M' N
% a. Y" P l9 _3 ftvb now,tvbnow,bttvb
5 g# |4 U) u- u% l `! \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。
1 r" Z; `$ s8 O, U) U9 gtvb now,tvbnow,bttvbTVBNOW 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 M; w# O3 X z7 P/ B
8 f) L- F; ]2 |: I4 C6 |4 l
4 B, j9 R% r4 f; ~公仔箱論壇
! J& g8 y! |' {% W
* C8 _7 S# m& r, a5.39.217.76 |
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
|