Physics – General Physics
Scientific paper
2012-01-13
Physics
General Physics
7 pages
Scientific paper
Newton introduced the concept of mass in his {\it Principia} and gave an intuitive explanation for what it meant. Centuries have passed and physicists as well as philosophers still argue over its meaning. Three types of mass are generally identified: inertial mass, active gravitational mass and passive gravitational mass. In addition to the question of what role mass plays in dynamical equations and why, the origin of the particular amount of matter associated with an elementary particle as a consequence of fundamental fields has long been a topic of research and discussion. In this paper, various representations of inertial mass are discussed within the framework of fundamental (either Galilean or Poincar\'e invariant) dynamical equations of waves and point particles. It is shown that the derived equations have mass-like and mass parameters for waves and point particles, respectively, and that the physical meaning of these parameters sheds a new light on the fundamental problem of the nature of inertial mass.
Fry J. L.
Musielak Zdzislaw E.
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