Question

英文物理，英文答案，谢谢～

2. What does diffraction of a wave mean?

Answer 1

2. What does diffraction of a wave mean?
波的衍射是什么意思？

Diffraction of a wave refers to various phenomena which occur when a wave encounters an obstacle. It is described as the apparent bending of waves around "small" obstacles and the spreading out of waves past small openings.

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Similar effects are observed when light waves travel through a medium with a varying refractive index or a sound wave through one with varying acoustic impedance. Diffraction occurs with all waves, including sound waves, water waves, and electromagnetic waves such as visible light, x-rays and radio waves. As physical objects have wave-like properties (at the atomic level), diffraction also occurs with matter and can be studied according to the principles of quantum mechanics.

中文，希望有助你理解
衍射：波在传播过程中经过障碍物边缘或孔隙时所发生的传播方向弯曲现象。孔隙越小，波长越大，这种现象就越显著。大气中的华和宝光等都是衍射现象。

又称为绕射，波遇到障碍物或小孔后通过散射继续传播的现象。衍射现象是波的特有现象，一切波都会发生衍射现象。

仅供参考