# How do you explain diffraction using Huygens principle?

The Huygens-Fresnel principle posits that every point on a wave front is a source of new spherical wave fronts. In other words, you can imagine that at every point along the crests of a traveling wave (the parallel blue lines in the figure below), new wave fronts are generated at each point, which propagate out spherically in every direction, like ripples on a pond.
The (linear superposition, or sum) of those spherical wave fronts leads to the formation of new wave fronts at later times. If a beam of light is not clipped by any aperture, long straight wave fronts will lead to more long straight wave fronts. This is because the spherical wave fronts only interfere constructively when they have all traveled the same distance as each other, namely one wavelength away from the original wave front at a time that is one wave period later.
However, if the beam is clipped, some of the spherical wave fronts are interrupted. This leads to the interference pattern shown by the grey semicircles in the figure above. At the points where those grey contours cross each other, and along the lines joining those points, there will be constructive interference. This is nicely illustrated by the animated gif below
For an excellent video discussion of this effect, see this episode of Veritasium:
The most relevant part of the video is at 4:14, although the whole thing is worth watching.

Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with Homework Mules
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Accounting
Thank you for your help. I made a few minor adjustments to the paper but overall it was good.
Customer 452591, November 11th, 2021
Political science
I like the way it is organized, summarizes the main point, and compare the two articles. Thank you!
Customer 452701, February 12th, 2023
Great paper thanks!
Customer 452543, January 23rd, 2023
Technology
Customer 452551, October 22nd, 2021
Psychology
Thank you. I will forward critique once I receive it.
Customer 452467, July 25th, 2020
Political science
Thank you!
Customer 452701, February 12th, 2023
Finance
Thank you very much!! I should definitely pass my class now. I appreciate you!!
Customer 452591, June 18th, 2022
Education
Thank you so much, Reaserch writer. you are so helpfull. I appreciate all the hard works. See you.
Customer 452701, February 12th, 2023
Psychology
I requested a revision and it was returned in less than 24 hours. Great job!
Customer 452467, November 15th, 2020
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend