URL:https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjjUTUNHePuexN_gYSXdv9W_-GqbNW25NiX5lfn2a54D8oTRfW9KH55nmreIGNzmoW647XNMybbGpHqXB4jUfpCzD5Ig5kfh6P_Iaf20HC5nYBX2eCyqhxHFZicJn2dVAPOr0iHmtYT_EE/s633/modified cathode ray tube.PNG
掲載元:https://thechemguy19.blogspot.com/2020/07/brief-evolution-of-atomic-model-part-1.html