Well I know that ernest rutherford did the gold foil experiment where he fired alpha particles at gold foil. This experiment founded the nucleus but I don't know if the current model of the atom is based on this.
Cathode ray tube experiments sounds like its to do with electrolysis so i dont think it can be that.
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i can help you i know this answer
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D lower energy waves is most likely the safest if one is exposed to.
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jajajaja sorry no ablaru inglich jajj yes or nou?