However, if the plane of the selector aperture is not precisely coplanar with that of the first image, then diffracted rays originating from outside the area defined by the aperture may contribute to the diffraction pattern 然而,如果选择孔的平面与第一次成像不是正好共面,源自孔指定区域外部的衍射线可能影响衍射模型。
For example, when light propagates through a small round hole, by computing the intensity of the diffracted light field, we can obtain the intensity distribution of fresnel and fraunhofer diffracted light field 以光线通过圆形孔径传播为例,对衍射后的光场分布进行数值计算,得到菲涅耳衍射和夫琅和费衍射光场的强度分布。
For example, when light propagates through a small round hole, by computing the intensity of the diffracted light field, we can obtain the intensity distribution of fresnel and fraunhofer diffracted light field 以光线通过圆形孔径传播为例,对衍射后的光场分布进行数值计算,得到菲涅耳衍射和夫琅和费衍射光场的强度分布。
Such deviated light ( as you will subsequently learn, called diffracted light ) is rendered one-half wavelength or 180 degrees out of step ( more commonly, out of phase ) with the direct light that has passed through undeviated 这种偏移光(其后我们称之为衍射光)与直射光之间呈现半个波长或180的不同步(一般称之为不同相位)。
Then we have accomplished the laser holographic interferometry experiments of shock wave diffracting double cylinders model in bend, double knives model and double cubes model . the experimental interferograms are obtained 然后,完成了弯道双圆柱体模型、双刀口模型、双立方体模型的激波绕流激光全息干涉实验,获得了实验干涉图像。
At the back focal plane of the objective, the blue wavelengths from each slit interfere constructively to produce the blue area of the diffracted image of each spectrum or order; similarly for the red and green areas ( figure 4 ( a ) ) 在物镜的后焦面,从各个窄缝发出的蓝色波长光产生增强干涉而产生各级的衍射图像的蓝色区域,红色波长和绿色波长也一样(图4(a))。
The x-ray diffract was used to analyze the crystal structure of the composite . results show that after the talc was treated with blend coupling agent, the crystal structure of talc changed, and effect intercalation phenomenon 通过x射线衍射分析可知,用混合偶联剂对滑石粉进行预处理后,滑石粉晶体结构发生改变,产生了插层现象,使pp滑石粉复合材料为纳米复合材料。
On the basis of the study of the characteristics of diffracted wave produced during the vibration propagation along the fissures, in association with practical example, the paper introduces the features of prospecting the depth of fissures of structural mass by using the seismic method 该文在研究振动沿裂缝传播时所产生绕射波的特征基础上,结合实例,介绍了运用地震法探测结构体裂缝深度的方法特点。
Abstract : on the basis of the study of the characteristics of diffracted wave produced during the vibration propagation along the fissures, in association with practical example, the paper introduces the features of prospecting the depth of fissures of structural mass by using the seismic method 文摘:该文在研究振动沿裂缝传播时所产生绕射波的特征基础上,结合实例,介绍了运用地震法探测结构体裂缝深度的方法特点。
If you were to block out the outermost diffracted orders by placing an opaque mask at the rear of the objective, you could reduce the resolution of the lines of the grating, or any other detailed object, or " destroy " the resolution altogether so that the specimen would not be visible 假如用不透明的遮挡物在物镜后焦面挡住外圈衍射级的光线,线形栅格图像的分辨率将下降,这样完全地破坏了分辨率,标本的细节就无法看见。