Leading-force in Process of Inelastic Collision and Relativistic Quantity of Heat of Ideal Gas System
Guo Jianxin · Journal of Beijing University of Technology · 2007
In order to clarify whether heated object moving in homogeneous velocity receives leading-force and leading-work,the changes of total momentum of heated object at uniform velocity is analyzed from space-time attribute of physical quantity in special relativity,and the objective fact of producing time-like leading-force 4- vector only because of changing proper-mass is pointed out.The concepts of leading-force and leading-work in laboratory-reference-system are established and the process of inelastic collision between two bodies is examed. Using thermodynamic law,the leading-force,leading-work,and relativistic quantity of heat are calculated. We find that the relativistic quantity of heat is contractive than proper quantity of heat in infinitesimal pro- cess.4-momentum-conservation equation is used in manybody system of ideal gas,and the contractive factor (1-v2/c2)~(1/2) of the motion quantity of heat of closed global system is evaluated.It is exactly consistent with that of Planck-Einstein school.This result further validates P-E theory in relativistic thermodynamics.