Janah, Anisa Furtakhul, M. Iqbal Sugita, Hartono Hartono, and Supriyadi Supriyadi. 2019. “Analysis of The Properties and Quick of Wave Creation on A Simple Ripple Tank Using Frequency Sensors”. Journal of Natural Sciences and Mathematics Research 5 (2):62-66. https://journal.walisongo.ac.id/index.php/JNSMR/article/view/11060.