著者

野口 大介

出版者

日本科学教育学会

雑誌

日本科学教育学会研究会研究報告 = JSSE Research Report (ISSN:18824684)

巻号頁・発行日

vol.34, no.3, pp.47-52, 2019-12-21

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Copper dendrites exposed to a magnetic field of rare earth magnets in an electrolyzing aqueous solution of CuSO4 resulted in two things. Firstly, a precipitation around the cathode with swirling, and secondly, a growth while spinning around the cathode during the electrolyzing process if a vibration by hand was gently added to the cathode. If these phenomena become inquiring learning materials, it seems to be of significant value in secondary educational practice. In this report, it is shown that the different concentrations of solution change the form of copper dendrites. The lower one needs waiting for enough changing the form, on the other hand, the higher one causes collapse with too strong flow by the Lorentz force acting ions in the solution.