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a ray of radiation that originates from the cathode and travels to the anode of a cathode ray tube
Dalton's atomic theory
a theory proposed by John Dalton in 1808, based on numerous scientific experiments that marked the beginning of the development of modern atomic theory
high-energy radiation that has no electrical charge and no mass, it is not deflected by electric or magnetic fields, usually accompanies, alpha and beta radiation
atoms of the same element with the same number of protons but different numbers of neutrons
a neutral subatomic particle in an atom's nucleus that has a mass nearly equal to that a person
a type of equation that shows atomic number and mass number of the particles involve
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