Khanklaeo, Aphinrat, Mananchai Chaipet, Wiraya Langlee, and Pitchaya Thipsee. 2022. “Measurement of Terminal Velocity of Various Falling Spherical Metal Balls in Glycerin Using Timer Detectors Controlled by Computer”. Wichcha Journal Nakhon Si Thammarat Rajabhat University 41 (2). ์Nakhon Si Thammarat, Thailand:1-15. https://li01.tci-thaijo.org/index.php/wichcha/article/view/253991.