Wednesday, June 20, 2012

what it is?



below shown is the sketch of a German Submarine

this is famous Eiffel Tower


this is a bridge made up of iron and steel


Now can you tell what it is?


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1 comment:

  1. AnonymousFebruary 13, 2013 at 7:36 PM

    this is Big Bertha
    for more detail read physics for fun by Y. Perelman

    ReplyDelete

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