Production of positive rays. We have seen that since an atom as a whole, is electricity neutral and it has negatively charged particles known as electrons, it should have some particles which should be positively charged. In order to show the presence of positively charged particles in an atom, attempts were made by many scientists. In 1886, German physicist, E. Goldstrein took a discharge tube provided with a cathode perforated with extremely fine holes and observed that when a large potential difference was applied between the electrodes, not only cathode rays of electrons were originated from the cathode, moving from cathode towards anode, but also new type of colored rays were rays were also simultaneously originated from the anode, moving from anode towards cathode through the fine holes or canals in the cathode and causing aglow on the wall of opposite to anode.
Initially these rays were called canal rays, since they pass through the canals or holes of the cathode. These are also called anode rays as they seem to originate from the anode, J.J Thomson has shown that these rays are positively charged and hence he has called them positive rays.
The origin of these rays can easily be understood. In a discharge tube when gas atom (say H atom) lose negatively charged electrons, they acquire a positive charge. These positively charged Particles then move from anode to cathode.
Initially these rays were called canal rays, since they pass through the canals or holes of the cathode. These are also called anode rays as they seem to originate from the anode, J.J Thomson has shown that these rays are positively charged and hence he has called them positive rays.
The origin of these rays can easily be understood. In a discharge tube when gas atom (say H atom) lose negatively charged electrons, they acquire a positive charge. These positively charged Particles then move from anode to cathode.
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