diffraction

IPA/dɪˈfrækʃn/
KK[dɪfrˈækʃən]IPA/dɪˈfrækʃn/

diffraction — noun

1. the bending and spreading that happens when light, sound, or water waves meet an

1.名詞C2
釋義

the bending and spreading that happens when light, sound, or water waves meet an edge or go through a small opening, often making repeated bright and dark bands.

例句

Rania projected a diffraction pattern onto the lab wall.

diffraction pattern after light passes an opening

Students noticed diffraction after light passed through a narrow slit.

diffraction through a narrow slit

文法句型

diffraction of + light / sound / water waves

diffraction through + opening

diffraction around + edge

用法筆記

Usually used in physics, optics, and engineering. Writers often describe diffraction of light, sound, or water waves, or the pattern that appears after waves pass an edge or a narrow opening.

常見錯誤

❌The mirror showed a diffraction of my face.
✅The mirror showed a reflection of my face.
💡diffraction is wave spreading at an edge or opening, not an ordinary mirror image.
❌The rainbow came from diffraction in raindrops.
✅The rainbow mainly comes from refraction and reflection in raindrops.
💡a rainbow is not the usual example of diffraction.