TY - JOUR
TI - There are two twin shadows, but einstein is one
AU - Popović Marko E
JN - Thermal Science
PY - 2012
VL - 16
IS - 1
SP - 1
EP - 6
PT - Article
AB - 2011 is the international year of chemistry, and it is exactly 100 years past  after the P. Langevin promotion of “twin paradox” problem. The hundred year  old problem still demands its solution. Twin paradox, established by a  physicist, has been representing a nightmare for philosophers, physicists,  chemists, and biologists until these days. After a hundred years, it is time  to try to close this page in long history of misunderstanding of the special  relativity. This analysis has three main assumptions. First, biological  systems are a part of physical world and therefore they behave in accordance  to the physical laws according to Schrödinger. Second, according to Von  Bertalanffy the biological systems are open thermodynamic systems. Because of  that the approach of non-equilibrium thermodynamics was used for analyzing  the twin paradox. Third, rise of entropy is according to Hyflick strongly  connected with aging. Entropy can be taken as a measure of cell age or even  human age according to Silva et al. and Gladyshev. So entropy invariance  strongly suggests that both twins should be the same age, so there is a  potential problem for twin paradox with the second law. The only possible  influence of relativity on the chemical reaction rate is time dilatation.  However time flow does not cause the aging process, so time dilatation cannot  have any influence on it. So, after detailed analysis, it is concluded that  there is no twin paradox in reality. Both twins will be exactly in same  thermodynamic state and bio-logical age. The traveler twin will notice time  dilatation, but this relativistic effect has no influence on the aging  process.