在弹性介质中,当波源做简谐运动时,介质中各质点随波源依次在其平衡位置做简谐运动,所形成的波就是简谐波。但是介质中各质点并不随波一起传播或迁移,机械波传播的是波源的振动状态或振动形式和振动能量,那么介质中各质点是否与做简谐运动的谐振子 In the elastic medium, when the wave source performs a simple harmonic motion, each mass point in the medium follows the wave source to perform a simple harmonic motion at its equilibrium position. The formed wave is a simple harmonic wave. However, each mass point in the medium does not propagate or migrate along with the wave. The mechanical wave propagates the vibrational state or vibrational form and vibrational energy of the wave source. Then, each mass point in the medium is a harmonic oscillator with a simple harmonic motion.