Another Sad day - Concrete Pumping

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  • Another day in the office - Concrete Pumping

    Feb 05 2009 · Compared to the rotations that one usually sees (tires on a travelling automobile a compact disc playing music or a draining sink) the rotation of the Earth is very small: only one rotation per day.The water in a sink might make a rotation in a few seconds and so have a rotation rate ten thousand times higher than that of the Earth. It should not be surprising therefore to learn that the ...

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