By the end of the 19th century, it became clear from the development of chemistry that substances are composed of atoms. Guesses about their existence arose earlier, in ancient Greek science, from the desire to give nature a coherent … Continue reading
On electron orbiting far from the nucleus of an atom The foundation of modern physics of elementary particles was actually laid by Ernest Rutherford, who was one of the disciples of J.J. Thomson. By 1911, on the basis of experiments … Continue reading
Moving along atomic orbits without emission From the standpoint of classical electrodynamics, electrons in the planetary model of atoms would be continuously emitting and then, having lost their energy, fall into the nucleus. In 1913, Niels Bohr suggested that an … Continue reading
About unknown energy emitted by cathodes and radium… In the discovery of electrons, a prominent role has been played by so-called cathode rays. Initially, to explain this phenomenon, the wave hypothesis was put forward: cathode rays would be a process … Continue reading