The sample should not be so large as to increase unduly the width of the diffracted beam . 樣品不應當過分大,以致不恰當地增加了衍射束的寬度。
It diffracts the diffracted beam which effectively means that it generates an inverse transform . 它對衍射光束再發生衍射,這實際上意味著它產生了一個逆變換。
Comparison of two numerical simulation methods for hard - edged diffracted beams 兩種硬邊衍射光束計算模擬方法的比較
Instrument for straightness measurement using non - diffracting beam and moir 233 ; fringe 無衍射光莫爾條紋法直線度測量儀
For example , if the diffraction pattern is defocused by under - focusing the diffraction lens then the image of the specimen can be seen in both the direct and diffracted beams in the diffraction pattern and , since under - focusing the diffraction lens images a plane above the diffraction pattern , these images will not be inverted with respect to the diffraction pattern 比如,如果衍射模型是通過衍射透鏡下焦散焦的,樣本的映像就能在衍射模型中直接的衍射束中看到,但是由于衍射透鏡下焦在衍射模型之上平面成像,這些映像就不會對應衍射模型倒置。