摘要
根据超声光栅的原理,在分光计上测出了超声波在不同温度下的纯净水中的传播速度.通过最小二乘法进行数据拟合,得到了传播速度与温度的近似公式.
Based on the theory of ultrasonic grating, the velocities of ultrasonic waves in pure water of varied temperatures are measured by spectrometer. The approximate formula of the velocity is derived from least square data fitting.
出处
《物理实验》
2008年第5期39-41,共3页
Physics Experimentation
关键词
超声波
传播速度
超声光栅
分光计
ultrasonic wave
velocity
ultrasonic grating
spectrometer
