According to the legend, the fall of an apple inspired Newton to create the theory of gravitation. No such thing ever happened.

    The toilsome development of modern physics in the seventeenth century, which was often obstructed by prejudice and by different interests, finally culminated after a long process in the theory of gravitation.

    It was the first body of physical theory developed according to our present conception. This is why the study of this subject is especially interesting.

   Furthermore, the law of universal gravitation has allowed the human race to begin to understand the cosmos in which we live.

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