translation.en: He created an experiment using a metal plate, covering it with sand and then bowing it to create the Chladni patterns that you see here on the right.
translation.zh: Ernest Chladni发明使用金属盘子做试验， 首先将沙子覆盖金属盘子，然后弯曲盘子， 就会出现大家在右侧看到的Chaldni图形。