- 光的衍射英文解释
光的衍射(Diffraction of light)是指光在传播过程中,遇到障碍物或小孔时,光波会偏离原来直线传播的方向,在障碍物或孔的后面形成光波的衍射图样。英文解释可以是:
1. Diffraction of light refers to the phenomenon in which light waves deviate from their original straight propagation direction when they encounter obstacles or small holes, and form patterns of light waves behind the obstacles or holes.
2. Light diffraction is the phenomenon in which light waves are scattered by an obstacle or a slit, causing the wavefront to deviate from its original straight path and form a diffraction pattern behind the obstacle or slit.
3. The phenomenon of light diffraction refers to the scattering of light waves by an obstacle or a gap, causing the wavefront to deviate from its original straight path and form a diffraction pattern in the space behind the obstacle or gap.
以上三种英文解释都是基于光的衍射现象,描述了光的传播过程中遇到障碍物或小孔时,光波发生偏离的现象。
相关例题:
题目:
一束平行光通过一个狭缝,落在光屏上形成一条亮线。如果将狭缝宽度减小一半,那么亮线的宽度将如何变化?
答案:
由于光的衍射效应,当狭缝宽度减小一半时,亮线的宽度会相应增加。这是因为衍射效应使得光线的宽度变宽,因此亮线的宽度也会增加。
解释:
当一束平行光通过狭缝时,光会发生衍射现象,即光线会向狭缝两侧扩散。因此,狭缝宽度越小,衍射效应越明显,扩散程度越大。因此,如果将狭缝宽度减小一半,那么亮线的宽度会相应增加。这个现象可以用菲涅耳公式来解释,其中k是波数,L是狭缝长度,d是狭缝宽度。菲涅耳公式表明,当狭缝宽度减小时,波长会增加,因此亮线的宽度也会增加。
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