The propagation modes in selfco fiber, which features the laguerre Gauss distributions, are derived by solving the helmholtz wave equation incylindrical coordinates.
从亥姆霍兹方程出发，导出了自聚焦光纤中传导模在圆柱坐标系中的场分布形式，并给出了几个低阶模的分布图。
Kelvin-Helmholtz wave clouds are formed when there are two layers of air moving at different speeds and in opposite directions.
当两层空气以不同的速度、相对的方向移动时，便形成了开尔文一亥姆霍兹浪状云(Kelvin - Helmholtz)。
应用推荐