Refraction: , , Light Bending , Reflection: , , Light Bouncing Back , , An echo , Absorption: , , , , Sound proofing , when the energy does not transfer through a medium, Diffraction : When a light bends around an obstacle , , light passing through a crack in a window, hearing someone in another room,

Wave behavior

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?