Wave Optics And Interference of light
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This course will cover the basics of Wave optics. It will be revolving majorly around the concept of
Interference and Diffraction
You ll see what they are, and how amazing they are, and how they play a role in our everyday lives (yes literally LITERALLY EVERYDAY). You ll understand (and not just FYI, but full quantitative analysis) why
Soap bubbles are colored, why some insects give out very bright colors (also feathers of peacock), why when you look at far away things, they blur (or pixelation if you prefer digitial :P) and a lot more other stuff.
If you are a high school student taking up a physics course or going to take up, anything at AP level or below, this is recommended for you
The structure of the course is pretty standard, Everything is in videos. There are two modes.
The float head -> where you will see my head talking about concepts with animations
The hands --> where you will see.. well my beautiful hands with which I write stuff like equations
I look forward to seeing you. Cheers!
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In this introductory video I ll talk about two amazing theories by two well known (at least 1 well known, and the other will be well known to you after you finish this course :D) scientists to explain what light is.
Let the theories begin!
|Section 1: Newton Vs Huygen|
Reflection is easy peezy for Sir Issac Newton. The man who unified gravity can surely explain reflection of light!
Refraction must also be easy for this guy right? I mean how hard is to explain why light bends. Check out Newton's simple idea that even derives Snell's law of refraction. What a victory for particle model! (Spoilers: Or is it?)
Ok now I know this guy isn't all that famous, but you have to hear him out. You have to understand his wave theory. Its a great idea. And he believed in it so much, he went against the Mastero of his time, Newton. So what is light according to Huygen?. Find out in this section!
If Newton can do it, So can Huygen. Watch as he explains how wave theory can prove the laws of reflections!
This is a true test of the wave theory. Refraction, bending, how does his theory tackle refraction? Newton derived Snell's law. Can Huygen do it too? Or will his theory perish? (Spoilers : This is Wave optics for crying it out loud )
If you have been following, then by the end of the previous video you must have had your jaw dropped. So pick it up. Yes they both derive Snell's law, and both come to quite dramatic and contrasting conclusions
They both agree, refraction is due to change of speed of light. But what do they disagree on? Lets compare the results shall we?
|Section 2: Light is a Wave Or Particles? :O|
So the moment of truth? Who is right? who is wrong?? particle or wave?
Waves are awesome
|Section 3: Waves can Interfere|
Lets repeat using Math! - Amplitude of resulting wave
Lets repeat using Math! - Maxima and Minima
Intensities or Brightness
Something doesn't "Add up"
It does "Add up" - The solution
|Section 4: Bending of waves, and the Double slit|
Huygen can tell you why waves bend
The Double Slit
Fringe Width And Wavelength of light (super ingenious)
|Section 5: Let us Recap|
Lets take a moment ok?
Waves Can Bend
|Section 6: Interference - Numerical|
Interference Problem part1
Interference Problem Part 2
Interference Problem Part 3
|Section 7: The single slit|
|Section 8: More Slits? Seriously? :O|
Broadening horizons, The multislit
Multislit is actually very Easy
Hello there, I am Mahesh Shenoy, but you can call me Mashy
I am basically an electronics engineer, but I shifted branches from applied electronics to pure science - namely physics about 4 years ago. My passion for physics grew watching the famous Walter Lewin lectures on youtube, and I always had a thing for teaching. As a student I know exactly what makes lectures boring, and uninteresting. I have dedicated past few years to master physics and teaching. I would say I am quite pleased with where I stand
Whether you will be able to master concepts of physics, is something that only you can decide. I can promise you, if you hear me out, I ll make you love physics. I ll make you see physics in your everyday world, and your life will never remain the same!