本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
% d0 o8 I! Z- w6 r, {# r1 h' ]
6 t6 U! @5 D3 H9 m% iIf you are not a Physics person, read on and learn a fact of physics.
( B! f/ m8 x0 H5 d# n( Q公仔箱論壇AMAZING! 5.39.217.77:8898& g" ?$ ^2 ?% f: U* {) F5 K
0 l0 h* f- f" L8 P
Even after you see it, it is still hard to believe!
( ]( J9 _( p0 t# n# {8 L( M公仔箱論壇- r' ^( ]8 U9 T# D/ Z6 Q
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。' K2 z# {; E" }4 z, w
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! 5.39.217.77:8898! d w, O. A1 E& X( O; ^3 J
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
' M. M9 D+ v1 g6 q* c4 L, b( v9 L6 G5.39.217.77:8898It is located in the city of Magdeburg, near Berlin.5.39.217.77:8898! H7 j% [! [5 I2 _+ d8 j R
# ]! ^! r7 B, c3 M ZThe photo was taken on the day of inauguration.
; [9 {0 s0 N) K9 H( `6 F; h公仔箱論壇To those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.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。- M. K* y' Y) A5 d5 Y* ~
% g8 v+ K( t) X' l& ~Question: E* Z! q7 r* X2 ?% j# j
# |' t6 o; n# [3 K/ a5 \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。Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
: M. a$ T9 n+ L8 o" BOr just the weight of the water?
5 W2 D4 ~# \7 d" B. G公仔箱論壇$ y0 M; w' W( `( m* f' x
Answer:
/ I) n' M0 `% w7 {tvb now,tvbnow,bttvb
) I! F6 E6 E; F( b, X* W6 b# r$ u5.39.217.77:8898It only needs to be designed to withstand the weight of the water! 5.39.217.77:8898! o2 | t: Z+ t2 C4 N
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
! i" [/ B" | d4 c# c: M3 u& 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。5.39.217.77:8898' [! u$ Y$ h1 |, y6 O
, X$ v5 @" U, I2 o8 f h! ~: z7 W公仔箱論壇The Incredible Magdeburg Water Bridge in Germany公仔箱論壇; t$ d" G- ]5 @# a9 G, i: i
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.
/ {! D2 I( }. M0 J$ l公仔箱論壇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. tvb now,tvbnow,bttvb% s- o5 B& Z1 ^) E: o8 i
! r! d7 ]# q _, uTVBNOW 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. 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。# D5 A5 J. \" n$ n) Y" D# r
tvb now,tvbnow,bttvb5 L/ t, G9 ~3 I8 E" ?
tvb now,tvbnow,bttvb8 {: ?5 w7 f9 T8 R$ m' q, T" X9 h3 k
公仔箱論壇( U: M. j8 @8 m N) p+ Y7 i7 b8 g9 I
) h) O. z" ~0 k* q
8 W2 B/ |; {/ P7 J/ b. {1 _2 t1 A% 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。# s; s* {( @0 d* v2 z$ l
, F, ^' Q4 g6 m) ~ }- S# w公仔箱論壇tvb now,tvbnow,bttvb1 l( O; @7 C+ o% X" k7 X* q
% u$ O i& E7 j+ W0 @- _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。 |
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
|