Sari, A., Dewi, U., & Setiawan, T. (2023). MEASUREMENT OF REFRACTIVE INDEX OF WATER IN COASTAL AREA USING He-Ne LASER AND HOLLOW PRISM. Jurnal Inovasi Pendidikan Dan Sains, 4(2), 108-112. https://doi.org/10.51673/jips.v4i2.1618