The set- up of the apparatus is done is manner such that there is in co-operation of a glass tube comprising of two metal pieces towards the opposite end which behaves as electrodes. The cathode rays consist of electrons which are negatively charged in nature.
The single ray of electrons can be transformed in a manner to show pictures in natural colours which are in movable motion. The image cast back electrical waves forms photographs, radar detected aircraft echoes and much more. The beam of electrons is diverted in such a way that permit an image appearing on the projector. The German physicist Karl Ferdinand Braun, is the inventor of cathode ray tube in such a way that the cathode rays have an evacuated glass envelope comprising of an electron gun as a source of electrons and a light which is fluorescent with means of acceleration present internally or externally to divert the electrons. The cathode ray is built in such a way that all the air has been drained out of the tube. The discovery of electron led by sir J.J Thomson through cathode ray tube experiment is one of the most well received experiment in physics. A small fraction of energy is changed into X-rays. When the electrons reach towards the end, all the energy left in them id given up by the electrons because of their speed and that is transformed into other energy namely, heat. In the cathode ray tube, electrons are transferred from one side of the tube towards the other end by means of electrical field.
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