             Giáo Sư Trần Cao Tần ON THE FORMULA E=mc2                                 ON THE FORMULA  E = mc2 GS Trần Cao Tần Tiến Sĩ Toán học Giáo sư Toán Đại học Loras tại Iowa, Hoa Kỳ  ABSTRACT                   In 1906 Einstein published a proof of the formula e = mc2 in a thought experiment of an isolated tube with two masses at the two ends, one of which emits radiation inside the tube toward the other end. A.P. French pointed out three problems in that proof:             1/ the length L of the box suffers a contraction according to the Theory of Special Relativity,             2/ the velocity of radiation in the box is less than c,             3/ after the emission of radiation, the mass of the box is M-m.             Then instead of a box in the thought experiment of Einstein, French considers two separate masses, one of which emits radiation toward the other to fix the three above problems.             But I still find three more problems in the proofs of the Einstein and French:             4/ the conditions set up in the two thought experiments do not guarantee that the center of mass of the system is always at rest,             5/ the proofs do not study the motion of the radiation between the two masses,             6/ the proofs do not consider the effects of gravitation.             In this paper I introduce a thought experiment with two masses which both emit radiations in opposite directions so that initially the center of mass does not move. Then I envisage that one mass is placed initially farther and farther so that it becomes smaller and smaller, and finally tends to zero. At the limiting case I get the formula e = mc2.             Note that the proofs of Einstein and French use concepts of relativity while mine uses only classical mechanics of and the principle of gravitation. I conclude that the formula e = mc2 is true in the absolute sense.   File Format: PDF/Adobe Acrobat: [PDF]   Bấm vào Link On The Formula: E=mc2  GS Trần Cao Tần Tiến Sĩ Toán học Giáo sư Toán Đại học Loras tại Iowa, Hoa Kỳ            www.ninh-hoa.com 