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Lecture Video: Diffraction, Resolution. The phenomena related to diffraction are the focus of the lecture. Prof. Lee explains the mathematical description of the diffraction pattern of the wave traveling through a wide slit.
Diffraction is most noticeable when the obstacle is similar in size to the wavelength of the light. When light waves diffract around obstacles, they overlap each other. This overlap results in constructive and destructive interference at different locations, producing an interference pattern.
This video works through the math needed to predict diffraction patterns that are caused by single-slit interference.
Learn Diffraction with free step-by-step video explanations and practice problems by experienced tutors.
In order to form an interference pattern, the incident light must satisfy two conditions: (i) The light sources must be coherent. This means that the plane waves from the sources must maintain a constant phase relation. For example, if two waves are completely out of phase with φ=π, this phase difference must not change with time.
22 Ιουλ 2021 · In these simulations we'll compare the diffraction patterns with lenses and without it, experiment with different apertures and locations of the lenses while discussing some of their applications. The simulations were done with the angular spectrum method, which was explained in this post.
1 Οκτ 2019 · The diffraction and interference of electromagnetic radiation are easily observable phenomena that give direct and tangible evidence of the wave nature of light. Diffraction is the basis of many technologies, scientific techniques and common optical and electromagnetic phenomena.
