[21a-PA1-1~20] 1.2 Education

[21a-PA1-16] Development of Sound Velocity Measurement Method Using Simple Materials and Utilization in Exploration Contests for High-School Students

〇Nobu Kuzuu¹, Tekeo Ibe², Kengo Omori³, Tomohiro Katsuyama⁴, Mayumi Degura⁵, Yasushi Yamauchi⁶ (1.Univ. of Fukui, 2.Fukui Commercial H.S., 3.Koshi H,S., 4.Mikuni H.S., 5.Sakai H.S., 6.Fukui Prefectural Education Research Inst.)

Keywords:physics experiment, measurement of sound velocity, high school student

We introduce a simple sound velocity measurement method developed for an inquiring event for high school students. A microphone is placed at the entrance of the cylindrical document case, and measure the time until the document case is reflected back using an audio oscilloscope software. The return time dependence the depth of the cylinder agreed with the calculated value using the sound speed of the literature value.