Many may wonder about the title of this book. But one thing to note is that in 1951, Einstein told his friend Basso that,"All these fifty years of conscious brooding have brought me no nearer to the answer to the question "What are light quanta?" Nowadays every Tom, Dick, and Harry thinks he knows it, but he is mistaken."This phrase has been mentioned by many people in their lectures, research papers and books. I think they know the exact meaning. Einstein doubted that there would be nothing like the postulated light quanta. But people are cheering for light quanta now. He was probably worried that something else would turn up later, showing that the light quanta were a trick used for the photoelectric effect. Because light is a wave and the energy in the wave cannot converge to a certain point, which he called light quanta. Secondly, he could not say what brings that energy together. What exactly that energy is, and why it depends on the frequency of the light wave, he could not tell. He was worried that it was just a trick used to solve the photoelectric effect. But people took the same thing to heart so much that a new mechanics emerged called 'Quantum mechanics' which is only leaps of imagination. Frankly speaking, it is difficult to get anything concrete out of it because its foundation is wrong. Another of Einstein's equations, which has received a lot of backlashes, is the mass-energy relation, E = mc2, which is derived from the results of the Michelson-Morley experiment. In fact, the Michelson-Morley experiment was only intended to determine the true speed of light through the ether, a hypothetical medium for the transmission of light, as well as the true speed of the Earth. It made no observations about mass or energy. The conclusion of this experiment was that the relative speed of light could not be measured. But taking imaginary leaps from it, Einstein's train reached E = mc2. This is called reaching heaven by a thread. Einstein's third case is the curvature of space. In fact, no one has yet understood what mass is, and no one has yet been able to arrive at what could be the root cause of the gravitational force. Gravitational waves have not been concretely discovered yet and will never be discovered. From the behavior of the gravitational force, it seems that a gravitational force should also exist between two parallel and closely spaced light rays. And people say that space is not filled with ether, it is a vacuum, so how can it be curved? The last 150 years have been nothing but confusion, and Einstein is also partly responsible for this confusion. While Einstein doubted the light quanta, he should have told the world that there was probably something else out there, look for it. Of course, we shouldn't have gone so far under his impression. But all this has happened.
