Fresnel Diffraction Explained

[@FDND-pl8wp]

God bless you sir!! I am trying to understand the course I took and your clear and short videos are helping me more than anything else. Please continue your amazing work.

[@GeoffryGifari]

For diffraction of light, does the "thickness" of the aperture matter? Lets say that the aperture is a circular hole on a plank of wood, and that plank of wood has a thickness on the order of the hole diameter. What would the effect be? What if we choose a different plank of wood with different thickness?

[@sanjaythorat]

@6:18 Did you mean Gin(kx)?

[@ramjad9731]

Awesome lecture! This helped me make more sense of my lecture notes

[@Pastisas]

great videos! I'm currently working on a problem where laser light diffracts inside of glass sheet of 1mm thick (d) and leaves diffraction patterned damages on the other side of the glass. These damages are 1mm, 2,7mm and 4,5mm distance from the center (Xs). laser beam diameter is 30 microns (a). So i cant use Fresnel nor Fraunhofer diffraction to model whats happening because my diffraction angle is very big ( xs > d). Do you have any advice or insights?

[@JordanEdmundsEECS]

Sounds like a challenging problem! In that case you can still try using Fresnel diffraction and see if it fits the data you get (although it will probably deviate significantly). If more precision is important, I think you would want to fall back to the equation from which everything was derived, Huygen’s principle, and not make the small-angle approximation. You will also need to take into account the angular distribution of a radiating dipole (goes like cosine of the angle). The theory you are looking for is called Kirchhoff diffraction.

[@Joshua-fr9fi]

Great videos! thank you!!

[@JordanEdmundsEECS]

Welcome!

[@omkarshinde2493]

can you please make a breif vedio on this topic overall . I dont understand derivation but a theory or animation diagram might help for all. Also there are no other vedios on ytube currently that touch this topic with your perspective. plsss:(

[@JordanEdmundsEECS]

On Fresnel diffraction specifically or diffraction in general? What would an outline of such a video look like?

[@yogbrana]

rk sir rocks

[@nicoloparacini633]

Am I deaf?

[@haniefsofi]

You don't have LECTURING SKILLS. It is very haphazard.

[@JordanEdmundsEECS]

Thanks for the feedback :)

[@meghuy6343]

@@JordanEdmundsEECS you are positive man..😎👍

[@jacobvandijk6525]

I couldn't agree more with you. Engineers aren't teachers. He proves it in every video.

[@gt5490]

In fact these are crash courses and the I regard them as very inspiring. For detailed derivations you'd better refer to a textbook.

[@adrianschimmer8698]

YOU'RE A PIECE OF SHIT. I can capitalize my words too.