the cathode ray experiment indicated the existence of negatively charged particles in an atom. this experiment also disproved the part of daltons atomic model that claimed indivisibility of the atom. when the experiment was repeated using cathodes of a different metal, each time the results were consistent. these discoveries of thompson were later substantiated by robert millikan when he calculated the charge of an electron. use information from the passage to justify whether the characteristics of reliable scientific explanations are present in the development of the atomic theory