понедельник, 11 апреля 2011 г.

Invention of the mechanical clock.

Do you think that during their histiory the clock met social needs of people?

1 комментарий:

  1. For many years the clock met social need of people. It was very useful, especially for workers and business people.
    Nowedays, Ican say almost the same; they help not to be in time, but there are other soureces to learn the time, mobile phone for instance.

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