I received this in e-mail today...........I've never heard anything like this & I don't have the time to look up anything on it........I know you guys would like to see it too..............just wondering if this could really be true...................

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Water Bridge - Over a River........

6 years, 500 million Euros,918 meters long.....now this is engineering.
This is a channel bridge over the River Elbe and joins the former East & West Germany as part of the unification project. It is located in the city of Magdeburg, near Berlin. The photo was taken on the day of inauguration.

To those who appreciate engineering projects, here is a puzzle for you armchair engineers & physicists. Did the bridge have to be designed to withstand the additional weight of ship & barge traffic, or just the weight of the water?


ANSWER: It only needs to be designed to withstand the weight of the water. Why? A ship always displaces an amount of water that weighs the smae as the ship, regardless of how heavily a ship may be loaded. Remember your high school physics and the fly in the enclosed bottle project? Similarly, the super sensitive scale proved that it didn't make any difference whether the fly was sitting on the bottom, walking up the side, or flying around. The bottle, air & fly are a single unit of mass & always weighed the same.

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