本帖最後由 lilitan008 於 2011-10-3 12:57 PM 編輯
# S6 ^6 x* N8 ]1 x1 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。: Y E+ F& x$ [5 |% q
If you are not a Physics person, read on and learn a fact of physics. 5 A( f6 j8 U- n. C
AMAZING!
3 i0 |) X" \5 m+ G! _4 U公仔箱論壇
' o ?! v" k/ y5.39.217.76Even after you see it, it is still hard to believe!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。+ d" s' u3 F! Z3 z3 ^& g4 K3 D# S: H
" H2 I5 o h& S5 R9 g% T9 S6 Ftvb now,tvbnow,bttvb; j, B1 O% _1 \7 \* d# n
Magdeburg Water Bridge in Germany What a feat! Six years, 500 million euros, 918 meters long. Now this is engineering! tvb now,tvbnow,bttvb) K9 g/ ]% b1 W' k: P
This is a channel-bridge over the River Elbe and joins the former East and West Germany as part of the unification project.
' j* ^" T w& P; J7 H7 F; I8 r5.39.217.76It is located in the city of Magdeburg, near Berlin.% V* J6 e- o9 p# A+ b! T
- t' o v4 C( r# |1 mThe photo was taken on the day of inauguration.
7 N2 Y$ n: I6 D' q* BTo those who appreciate engineering projects, here's a puzzle for you armchair engineers and physicists.9 I' F' z- r* `+ D' j5 K
公仔箱論壇2 X6 H/ j% S1 l
Question:5.39.217.76" Y& u) ?" j Y9 t
4 c- F* x7 T& T5.39.217.76Did that bridge have to be designed to withstand the additional weight of ship and barge traffic,
/ f1 u: T" Q0 {; c) Y5 WOr just the weight of the water?
( M3 j7 X+ L( `9 S% _( T
# B0 @; N# m3 m, cAnswer:5 a* h/ Q* R8 O' K& E
9 l; v! B7 W, ^8 X- v$ P3 p
It only needs to be designed to withstand the weight of the water!
$ o( P% a+ O0 P3 B- R3 WWhy? A ship always displaces an amount of water that weighs the same as the ship, regardless of how heavily a ship may be loaded
7 S* ^6 Z$ _! q- a: J0 |0 O: Y0 j2 n, Q2 h1 ^
5 v' M5 h4 M& E% u, ^tvb now,tvbnow,bttvbThe Incredible Magdeburg Water Bridge in GermanyTVBNOW 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 c& k+ |' i% k
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.tvb now,tvbnow,bttvb |8 V" b& Y* s, u
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. ! i% Z2 `1 R1 \. _' A% \. w
3 J0 L& J3 D) _% u; j* [
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。* d' S$ V+ S# G6 U( Z- u
2 j W3 d) q/ D& V. _- X/ `8 Ztvb now,tvbnow,bttvb
$ x4 |8 e9 p+ R1 Z. {' e* z5 m, g
; [ m/ M; d" x6 K5.39.217.76
2 e9 T0 F& H' t: Z; W8 l3 F5.39.217.76
' ?, e7 ~$ z0 R& 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。( v7 _- ~; S b+ W; n" {
公仔箱論壇+ h( N: O$ Q/ z, `0 D
tvb now,tvbnow,bttvb: |8 X( W/ P, T% R/ g, ]
1 k! A9 Y W4 x: b# e) d |