Natural Color Characteristics of Teak Leaves (Tectona grandis): Effects of Particle Size on Physicochemical and Optical Properties. J. Phys. Soc. Ind. [Internet]. 2026 Oct. 25 [cited 2026 Nov. 11];2(2):87-99. Available from: https://journal.fisika.or.id/index.php/jpsi/article/view/97