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    • Elementary Dynamics - Nature

      Nature· 3 days ago

      The author does well to direct the attention of the beginner at the outset to the fact that weight and mass are by no means the same thing. Newton's laws are given almost unchanged in words, ...

    • Measurement of Mass - Nature

      Nature· 3 days ago

      If then we adopt a pound as our unit of weight, and use g to denote the force of gravity in reference to a foot and a second as the units of length and time, our unit of mass ...