Water wave
Water wave
The shape of wave 周期T: the time in 峰 which wave traverses a distance of a wavelength. 频率v One second T 即一秒钟通过横截面的完整波形的个数。 波的周期和频率与波源的振动周期及频率相同
周期T: the time in which wave traverses a d i s t a n c e o f a wavelength. 频率: T 1 即一秒钟通过横截面的完整波形的个数。 波的周期和频率与波源的振动周期及频率相同。 x y o The shape of wave V One second 峰 谷
The shape of wave 波速:由媒质的性质 峰 决定如空气声速不同 于钢轨中的速度 N/(体中横波) k(纵波) One second G为固体的切变模量,K为介质的体积模量,ρ为介质的密 度
波速:由媒质的性质 决定如空气声速不同 于钢轨中的速度 G V (固体中横波) K V (纵波) G为固体的切变模量,K为介质的体积模量,为介质的密 度。 x y o The shape of wave V One second 峰 谷
波长:描述波的空间 The shape of wave 周期性,与波速和频 峰 率满足: = 或 One second V=
波长:描述波的空间 周期性,与波速和频 率满足: 或 x yo The shape of wave V One second 峰 谷
4. Some concepts for the waves 同相面: A surface marking the points that have same phase is called the same phase surface. 波面 波前(波阵面): a surface 波线 consisting of the points that the disturbance has reached is called the wave-front 平面波 球面波 波线: the direction of wave transmission or wave propagating line. 球面波和平面波:波阵面为球面(平面)
4. Some concepts for the waves 同相面:A surface marking the points that have same phase is called the same phase surface. 平面波 波 线 波面 球面波 波前(波阵面):a surface consisting of the points that the disturbance has reached is called the wave-front. 波线:the direction of wave transmission or wave propagating line. 球面波和平面波:波阵面为球面(平面)