Amazing how much I can absorb when the lecture is not boring. Thanks!

@GenesisRussell-jt2rp

5 жыл бұрын

the colors help too

Best video on Young's double slit experiment I've seen.

First physics tutorial I have ever witnessed where the narrator isn't talking in endless monotone. For that, you have my unwavering respect, sir.

Never thought optics could be so interesting. Thanks a ton Sir.

I went through 3 physics textbooks and this still didn't make sense! I see your video once and it finally clicks!! Thank you! This helped a lot.

A legendary teacher with such a sweet personality !!

we need more teacher like you!

I just love how you explain stuff with a empty paper :). Thank you very much for this contribution to help me study :)

Haha! Meet infinity - where parallel lines converge. They are certainly parallel and they do keep going, but infinity is a LONG way away. You can get a sense of this by looking at railroad tracks.

dude u made physics way more fun!! I was laughing the whole time lol , and most importantly I understood everything cuz u have a great way of teaching and delivering the information so thanks a lot Doc Schuster !

That's EXACTLY my goal here! Thanks so much for your support.

You are an amazing teacher :')

There's a little chromatic separation in person, but it's just a slight hazing of color at the edges. What is really cool is when you put water on the ridged side! I'll make a video of that.

best physics videos on youtube

@markangelobasiano8551

6 жыл бұрын

yeah

The Greatest teacher ever 😍

oh yes this just saved me over 40 points in my assignment i missed my online class and they offer no video recording just slides and the experiment with no commentary. definitely gonna watch more of his videos very interesting and despite my terrible attention span I was listening intensely which really surprised me :)

You explained this so much better than most other videos I’ve seen, thanks man.

These are the best physics vids out there!

thank you for this video. I hate studying for physic test but the way you talk about it is refreshing xD

I AM IN LOVE WITH YOU AFTER BEARING THAT STUPID PHYSICS TEACHER FOR TWO LOOOOONG YEARS AND UNDERSTANDING NOTHING ABOUT WAVE OPTICS! You're a SAVIOUR and I SCREAM that!

15:54 That's what she said...

This was an EPIC explanation and I feel like I understand how the entire world works!! Thank you so much for your help!

you are the best teacher for college physics courses . You taught physics like a story in jungle book..amazing explanation with such humour.

now that was some great narration!!! Sir you just nailed the YDSE

Am I the only one who thinks he sounds like Barney Stinson from How I Met Your Mother? Thanks for the upload, easy to understand, now I can finish my physics hw.

@ulterior21

10 жыл бұрын

was just about to say that.

@cesarmercado3932

10 жыл бұрын

Sounds more like Phil from Modern Family! Great vid btw!

@rajaalahmar4371

4 жыл бұрын

was about to say that lmao...the comment is 5 years old....hey hope your doing great now

Amazing teacher, extremely useful! Thank you

Oh my god, you are amazing !!!!! Best teacher ever ! :)

this may sound totally crazy but i am so touched. i found all this so interesting n i always feel like sleeping in my actual physics class.

So much easier to understand now.. Finally! Thank you.

I'm so glad that I found this channel ....with that laser exp I could understand even more better...we need more physics tr like him :) ^.^

Holy Holy, mind blowing lesson.

Awesome. I have taken apart another 20 monitors since this video and can confirm that they are prism sheets, and diffusers are behind them. I'll check for diffraction in the spring.

This is lovely!! I have physics exam on this monday and this really helped! actually this is the first time I'm understanding physics instead of learning it algebraic.

YES! I don't know! It has the most bizarre optical properties, as you can see. I found it in a flat-screen monitor. There's all kinds of cool sheet goods (polarization filter, light diffuser, etc.) in there. I hope someone who knows will be able to answer us, as I am as interested as you are.

This guy is just too cool to be a Physics teacher😤

Sure. There are a lot of variables here, and it's too easy to become confused. Delta l is path-length difference from the two sources. d is separation of the slits. Neither of these is the separation between the fringes, which depends on how far the screen is. You are most interested in theta, which is how I am measuring [angular] fringe separation. To increase theta, either decrease d or increase lambda. I hope this is also conceptually consistent.

Really really really really really really really really really really really really really really really really really really really really really really really really helpful as well as entertaining. Thanks.

Are you Neil Patrick Harrison??? Wow, same voice! Thanks for the videos and the enthusiasm, it helps a lot!!

Maaan are you amazing!!

Suddenly a wild marker pen appears at 11:40....

@ayadimishra

7 жыл бұрын

asemnafiz XD

@shivambhatyar

6 жыл бұрын

Hehe

Wow! Physics is beautiful!

You are simply an Awesome teacher, I've tried understanding this on my own from the notes I've wrote in my lecture and i couldn't understand them but then you just saved me, Thank you so much Doc!

@DocSchuster

10 жыл бұрын

Happy to help! This is really a new age in learning. You will be able to understand anything you have a desire to understand!

Coming from a mathematical background, I loved your set notation. Very useful explanation, thank you. One question, if both rays have an angle theta, how come they will converge as they are parallel?

@DocSchuster

8 жыл бұрын

+inteusproductions They will converge where all parallel lines meet, at infinity. This is embodied in our assumption that the screen is very far away compared to the slit spacing.

I disagree, but see where you're coming from. When I say half-integer, I don't mean half of an integer. I mean an integer plus a half. So, 6/2 is "half-an-integer" but not "a half-integer." I totally agree that if I were just dividing an integer by 2, I'd need that integer to be odd. All semantics, of course. Thanks for pointing this out!

hey man thank you very much! i've learn so much your teaching style is just awesome! stay cool!

@DocSchuster

10 жыл бұрын

Thank you! You stay cool, too!

you lowkey sounds like Ryan Reynolds, I love it! Great vid!

I love this guy. Fun to learn.

thanku so much.....most nyc explaination ever.........

Damn! You are great teacher! Loved it!!!

I have my Optics exam in 2 days...thanks for making this fun :P!

@DocSchuster

9 жыл бұрын

Susie Robertson Go get 'em!

Awesome!! Thanks to you, I shall pass my physics exams!!

Nice work! Thanks! It's so cool, and I hope every kid and physics teacher takes apart an LCD panel to get one. Careful, though. The thin glass in the screen breaks easily.

Super helpful!! And fun. Bravo!

This was amazing. thank you so much for your time and effort!

Fun way of teaching man!!I wish all teachers would adopt yours way of teaching then learning could really be fun making.And I wanted to know bright and dark fringes have certain length or they are just points??You havent talked about that!

you are a very very very good tutor!!!!!

This was awesome! I absorbed the information very well!

This is so awesome!! Thanks for breaking it down piece by piece. Physics is fun with your teaching :)

yo boss! Great video! Great humour! Keep it up!

wow! you make physics so much fun! keep up the good work, thanks!

Can someone help me please. In some notebooks for destructive interference it says that delta l=(2m-1)*lambda/2 and in other there is plus sign after m. Help!

Equation for destructive wave is it [(m-1/2)*wavelength] or is it [(m+1/2)*wavelength]?

@srijanraghunath4642

3 жыл бұрын

They’re both destructive since they only differ by some integer. In other words, m-1/2 and m+1/2 are still half integers (and since any half integer multiple of wavelength is destructive), so both are destructive. Which one u want to use is up to u as both are correct

I had been reading many books about this topic for a weeks, but after I saw this vidieo it is just simple. I want to ask you one question on this vidieo. My qustion is I know we start the order of maxima with m=0. What about for dark fringe, can I start with 0 which is the first dark?And then the formula for distractive =((m+1/2)lamda) =(0+1/2)lamda=lamda/2 For the second dark, =(1+1/2)lamda=3/2lamda....and so on.

Thanks!

...and thanks to YOU! I'm not the guy who's going to pass his physics exam - you are! Go get 'em.

To be more precise , for destructive interference , we dont need an half integer of the wavelenght but instead an ODD half integer of wavelength. Its logical but makes a difference

I think that those green circles are the wavefronts and the dots in the circle is the point source of secondary wavelets...

I freakin love this doc. Thanks for your wisdom. I have already learned many of the things you teach but you just make it click!

@DocSchuster

10 жыл бұрын

D Berks I'm so glad to hear it! Keep rocking.

Your title is misleading. There exists another experiment known as Double slit diffraction, where screen is nearby so you can observe interference phenomenon AND diffraction phenomenon.

aand ive got unit 2 tomorrow too good!!!

God.. I finally got it after 2 years

Man. This is awesome. I'm subscribing. Question:I'm trying make a video, an Elegant way to describe gravity, dark energy, black holes and quantum fluctuations all in one: Take a rubber membrane and suck on it using a vacuum cleaner. It creates balloon. From the outside, the membrane mimics gravity sucking space time to form a black hole. From the surface inside the balloon, the membrane mimics the expansion of universe due to a mysterious dark energy. Obviously both gravity and dark energy are the same thing looked from different angle. They are both caused by the energy differential on each side of the membrane. The energy differential is, at small scale, called quantum fluctuations. At large-scale it is called a black hole or a white hole/big bang Then i go in quantum gravity. When energy of quantum fluctuations are locally not equal and thus generates a flow. Same principle as Hawking radiation. It separates virtual particles like the waves separates the sand in the beach according to size and weight. Is that a good illustration of all of the topics in one? Thank you for your time. And have a great day.

Hey Doc, amazing video. I definitely learned a lot in these 17 minutes. I just have this one doubt. See,you said that the light waves(let's call them waves) coming out of the slits were spherical. But shouldn't they be forming a cylindrical wavefront according to Huygen's Principle? Please just explain this. Loved the video. Instant subscribe!

@DocSchuster

10 жыл бұрын

Rãčhït Ãgárwáł YES! I'm surprised I was so sloppy. I'll fix that.

@tarinivenkatanarayan1579

8 жыл бұрын

+Doc Schuster why should it be cylindrical?? I don't get it, could you please explain or direct me to the video which has the explanation!

@arksrivastava

7 жыл бұрын

I guess it is spherical only!

Lovely tutorials! But, why the title says ''diffraction''? Isn't it an Interference phenomenon?

@DocSchuster

8 жыл бұрын

+ED Project (ProjectED) yes, but the fact that the waves don't go straight (i.e., that they interfere at all) is due to diffraction.

@edproject2720

8 жыл бұрын

Doc Schuster Got it! Thanks a lot from Italy!

Your videos are so good! I wanna study physics at uni and I find all this stuff so interesting :):)

honestly this made me laugh and I understood it all- that's a breakthrough

Best explanation, thanks!

this was a great explanation :) thanks!!

DAMN YOURE SO FUNNYYYYYYY

@anuvhabbasu3068

6 жыл бұрын

Maria Indira D stands for distance I guess!

amazing explanation. I just want to ask why did he not pass the filtered light from the double slits from the beginning?why did he pass it from a single slit first?

Lengths are different only if the screen is angled perpendicular to the direction of the light rays.

Wonderfully explained doctor... but i am confused with the formula of destructive interference , you have written it something like this (m-1/2)lambda ,but as i have studied it seems like this (m-1/2)lambda. please sir make me correct..

lol you still can see a smiley on the left hand :D

I think you can get to my google plus account from youtube. I don't have another page per se.

What is the explanation for the formation of circular pattern when the incident light is not at right angle to the gratings?

in the 11:49th minute I think that the m value must be -1 for the dark fringe and not 0 'cos there can only be one central maxima/minima(m=0).

I've watched at least dozen of videos on the double slit experiment, this is the first video that regard the fact that two parallel light beams are met at infinity. All the other explanations simply connect two parallel beams at the screen without telling why.

"But .. they did not overlap their live span " This is the saddest statement I heard for the whole day

Hi, thanks for the video. You are a great educator. Around 6:58 you mention that the angle between the normal to the first slit and the diffracted ray from the first slit is equal to the angle between the normal to the first diffracted ray and the line containing the slits. We can see this intuitively, but is there a specific name or term for the argument which proves this equality?

I feel confused about 7:17. Why, if they have same angle (and they both would hit a wall parallel to the line that separate the slits) have different lengths? that initial difference would be compensated with the adittional distance that the above ray would travel before hitting the parallel wall

Doc Schuster I've seen other people only using positive numbers for m. That doesn't really matter right? Appart from the fact that using negative numbers for the fringes under the 0th fringe makes it easy to tell them appart from the fringes above the 0th central fringe. Right?

But we've just met! You've got to take these things slow. Like...watch more videos...

on desctructive interference serway states that d sin theata =(m+1/2) lamda where m =0,1......am confused

@DocSchuster

10 жыл бұрын

I agree with Serway. Did I use (m-1/2)? Try out a few - it's just a change in the range of m, but the range is infinite!

Thank you very much sir....

Awesome tutorial sir!!!One Question During laser tricks session if we use white light what do we expect rainbow fringes or no interference?

@mistree0007

8 жыл бұрын

well i dont think rainbow fringes will b observed bec its not dispersion

Ok a photon has two parts the storage like a hard drive (the wave part of a photon) that carries the information (the particle part of a photon) of the object that emitted it or reflected it or observed it fully (which full absorbtion is no photon reflected back or photon empty of information reflected back equals black) so a photon leaving the source that emitted it is a wave with the information (particle) of the source it came from when that photon is reflected by on object part or most of the information from the source is transfered into the object and the photon reflected has a percentage of source information that is 49% or less and now has 51% or more information from the object reflecting it. So in the double slit experiment the method used to observe the photon shot before the impact of the back wall takes part or most of the information in it away which takes away the interference pattern and when the method used to observe the photon a second time replaces the information the first observance took out and now you get your interference wave pattern again.

Really cool I enjoyed it

Better than my physics teacher , much obliged =V=

Wow! I actually understand things :) Thank you :) :)

another great vid! super funny