Jameel, Ahmad T., Mohammed R. Al-Qasaab, and Jameel Al-Naffakh. “Decorative Flame Behavior Study in Visualizing Wavelengths and Frequency: Ruben’s Tube Construction Experiment”. International Journal of Environment, Engineering and Education 3, no. 2 (August 12, 2021): 41–47. Accessed July 16, 2026. http://www.ijeedu.com/index.php/ijeedu/article/view/49.