by Naurah Nazhifah | Yulkifli | Aulia Asman | Yohandri | Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25132, Indonesia | Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25132, Indonesia | Department of Nursing, Faculty of Psychology and Health, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25132, Indonesia | Department of Physics, Faculty of Mathematics and Natural Science, Universitas Negeri Padang, Jl. Prof. Hamka, Padang 25132, Indonesia
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