Analysis. From Einstein’s and , we have so that, having measured speed , we can calculate the kinetic energy gained by the electrons and the efficiency of the

From Einstein’s and , we have so that, having measured speed , we can calculate the kinetic energy gained by the electrons and the efficiency of the Linac as :

Linac’s working energy	0.025MeV	0.035MeV	0, 045MeV	0.055MeV	0.065MeV
Measured speed of electrons	0.313	0.369	0.412	0.449	0.480
Kinetic energy of electrons	0.0270MeV	0.0388MeV	0, 0498MeV	0.0609MeV	0.0715MeV
Linac’s efficiency	108%	111%	111%	111%	110%

Table 2

It is surprisingly strange that the kinetic energies of accelerated electrons are more than the Linac can give them and the Linac’s efficiencies are more than 100%! Even 100% efficiency is impossible, because it violates the second law of thermodynamics. Obviously, both the Einsteinian relativistic mechanics and the traditional electromagnetic acceleration theory are questionable.

According to the newly developed Galilean relativistic mechanics , which is based solely on the Galilean principle of relativity without Einstein’s postulate of the constant speed of light and Loretnz’s postulate of the length-contraction, if a static body () is accelerated to the speed of then it obtains kinetic energy . With this formula we can get the following results:

Linac’s working energy	0.025MeV	0.035MeV	0, 045MeV	0.055MeV	0.065MeV
Measured speed of electrons	0.313	0.369	0.412	0.449	0.480
Kinetic energy of electrons	0.0244MeV	0.0337MeV	0, 0417MeV	0.0491MeV	0.0558MeV
Linac’s efficiency	97.8%	96.2%	92.6%	89.4%	85.9%

Table 3

As the speed of the electrons increases, the Linac’s efficiency decreases. This is understandable because the electromagnetic force cannot push electrons to reach the speed of light which is the speed of electromagnetic action. This is similar to the case between wind-force and sailing-boat: A sailing-boat’s speed can never be equal to the wind’s speed. Because, as the boat’s speed approaches the wind’s speed, the wind’s effective force acting on the boat’s sail reduces sharply. A great amount of the windpower is wasted. In case of the electromagnetic acceleration, let’s call it a “ phenomenon”.