Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 Santika, F., Suyanto, H., Trisnawati, N., & Indrayana, I. (2024). Determination of the Optical Band gap Energy from the Extraction and Evaporation of Anthocyanin Compound Sea Lettuce (Ulva Lactuca L.) Using Tauc Plot Method. BULETIN FISIKA, 25(1), 8 – 13. doi:10.24843/BF.2024.V25.i01.p02