Young's Double-Slit Diffraction Experiment for Light (and some laser tricks, too) | Doc Physics

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  • čas přidán 6. 03. 2013
  • Thomas Young was a genius. Learn from his insightful experiment.

Komentáře • 247

  • @OmarHernandez-qy2jn
    @OmarHernandez-qy2jn Před 10 lety +100

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

  • @shreyanshswarnakar2583
    @shreyanshswarnakar2583 Před 8 lety +48

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

  • @elizabethbarron764
    @elizabethbarron764 Před 8 lety +2

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

  • @LearnItWithMe
    @LearnItWithMe Před 9 lety +20

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

  • @faisalmohammed7864
    @faisalmohammed7864 Před 10 lety +6

    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.

  • @rajmohd4033
    @rajmohd4033 Před 9 lety +5

    A legendary teacher with such a sweet personality !!

  • @alexandermtj655
    @alexandermtj655 Před 9 lety +6

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

  • @giovannistriano3564
    @giovannistriano3564 Před 6 lety

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

  • @lolboy94
    @lolboy94 Před 7 lety +6

    we need more teacher like you!

  • @LalaRach
    @LalaRach Před 10 lety +1

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

  • @jotunnhime
    @jotunnhime Před 4 lety

    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 :)

  • @DocSchuster
    @DocSchuster  Před 11 lety +4

    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.

  • @gracegrace1113
    @gracegrace1113 Před 8 lety +2

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

  • @greenbear3221
    @greenbear3221 Před 10 lety

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

  • @Ellcohol
    @Ellcohol Před 10 lety +1

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

  • @hemoisthebestemo1234
    @hemoisthebestemo1234 Před 8 lety +8

    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 !

  • @ankitkumar.1738
    @ankitkumar.1738 Před 9 lety +1

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

  • @rakhshandamujib2793
    @rakhshandamujib2793 Před 7 lety

    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!

  • @subhrajitsaikia7627
    @subhrajitsaikia7627 Před 7 lety

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

  • @jkimt08
    @jkimt08 Před 11 lety

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

  • @mwerensteijn
    @mwerensteijn Před 11 dny

    Amazing teacher, extremely useful! Thank you

  • @shannenlee2253
    @shannenlee2253 Před 7 lety

    This was awesome! I absorbed the information very well!

  • @Strawberry-cu6wr
    @Strawberry-cu6wr Před 8 lety +6

    You are an amazing teacher :')

  • @roshanrs6725
    @roshanrs6725 Před 4 lety +1

    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 :) ^.^

  • @nerd9992
    @nerd9992 Před 3 lety

    Holy Holy, mind blowing lesson.

  • @ayadimishra
    @ayadimishra Před 7 lety

    These are the best physics vids out there!

  • @merajis
    @merajis Před 11 lety

    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.

  • @1627anat
    @1627anat Před 11 lety

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

  • @chelliebelliie
    @chelliebelliie Před 10 lety

    Super helpful!! And fun. Bravo!

  • @DocSchuster
    @DocSchuster  Před 11 lety

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

  • @kairiannah
    @kairiannah Před 9 lety

    Best explanation, thanks!

  • @estella16sonder60
    @estella16sonder60 Před 6 lety

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

  • @HM-dm3qg
    @HM-dm3qg Před 6 lety

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

  • @nikkob5440
    @nikkob5440 Před 10 lety

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

  • @BCD10
    @BCD10 Před 10 lety +22

    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
      @ulterior21 Před 10 lety

      was just about to say that.

    • @cesarmercado3932
      @cesarmercado3932 Před 10 lety +3

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

    • @rajaalahmar4371
      @rajaalahmar4371 Před 4 lety

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

  • @samsamthegreatest
    @samsamthegreatest Před 4 lety

    The Greatest teacher ever 😍

  • @stsfoxfacel9171
    @stsfoxfacel9171 Před 10 lety +1

    Wow!
    Physics is beautiful!

  • @MrShamsherbajwa
    @MrShamsherbajwa Před 9 lety +1

    this was a great explanation :) thanks!!

  • @DocSchuster
    @DocSchuster  Před 10 lety +2

    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.

  • @AmmarHadhrami
    @AmmarHadhrami Před 11 lety

    great video
    thanks

  • @SarrouTube
    @SarrouTube Před 2 lety

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

  • @mistree0007
    @mistree0007 Před 8 lety

    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.

  • @dberko8230
    @dberko8230 Před 10 lety

    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
      @DocSchuster  Před 10 lety

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

  • @gokulchandran5586
    @gokulchandran5586 Před 4 lety

    Thank you very much sir....

  • @marutinandan9359
    @marutinandan9359 Před 9 lety +2

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

  • @saminakhalil2470
    @saminakhalil2470 Před 7 lety

    Really cool I enjoyed it

  • @Blahshamahhaaaaaa
    @Blahshamahhaaaaaa Před 10 lety

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

  • @arjabdhakal9852
    @arjabdhakal9852 Před 9 lety

    I love this guy. Fun to learn.

  • @andrewtonton4672
    @andrewtonton4672 Před 10 lety +1

    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.

  • @sufianrock
    @sufianrock Před 10 lety

    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
      @DocSchuster  Před 10 lety

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

  • @user-py6wp5hm1s
    @user-py6wp5hm1s Před 11 lety

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

  • @abhishekranade419
    @abhishekranade419 Před 8 lety

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

  • @ameerbux78666
    @ameerbux78666 Před 8 lety +5

    best physics videos on youtube

  • @DocSchuster
    @DocSchuster  Před 11 lety

    Thanks!

  • @maleehasuddal5503
    @maleehasuddal5503 Před 4 lety

    Awesome!!

  • @triggerfinger2836
    @triggerfinger2836 Před 9 lety +5

    Maaan are you amazing!!

  • @DocSchuster
    @DocSchuster  Před 10 lety

    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.

  • @jenncr93
    @jenncr93 Před 10 lety +1

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

  • @monalisadhakal2847
    @monalisadhakal2847 Před 9 lety +2

    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!

  • @violinsheetmusicblog
    @violinsheetmusicblog Před 10 lety +6

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

  • @neetisharma1940
    @neetisharma1940 Před 11 lety

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

  • @DocSchuster
    @DocSchuster  Před 10 lety

    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.

  • @throughtheeyesofeleanor9818

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

  • @hendrikvanbrantegem7526
    @hendrikvanbrantegem7526 Před 10 lety

    thanks alot :) love your teaching

    • @DocSchuster
      @DocSchuster  Před 10 lety

      Hendrik Vb Thank YOU!

    • @hendrikvanbrantegem7526
      @hendrikvanbrantegem7526 Před 10 lety

      well i think i passed my exam, i'm studying business and we have a mix of business combined with science. I think this was my last science course about electronics, photonics and electricity. It really helped me to understand things better, especially the energy you put in the videos. It isn't boring at all! I even laughed a lot :). It inspired me to do the same maybe one day. again thanks :)!!

  • @jainamshah4819
    @jainamshah4819 Před 11 lety

    superb very nice

  • @corporatemanthras
    @corporatemanthras Před 10 lety

    another great vid! super funny

  • @ndsseniors6844
    @ndsseniors6844 Před 3 lety

    I love this

  • @khnahid5807
    @khnahid5807 Před 3 lety

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

  • @shivambhatyar
    @shivambhatyar Před 6 lety

    That was great Doc. Can I please know what that plastic thing is called? Also the second one? Can I get them online? :)

  • @susierobertson2703
    @susierobertson2703 Před 9 lety

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

  • @ape5270
    @ape5270 Před 4 lety

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

  • @DocSchuster
    @DocSchuster  Před 10 lety

    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.

  • @rodmanlouis1505
    @rodmanlouis1505 Před 10 lety +1

    Better than my physics teacher , much obliged =V=

  • @hamdaniyusuf_dani
    @hamdaniyusuf_dani Před 9 lety +1

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

  • @asemnafiz
    @asemnafiz Před 10 lety +18

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

  • @mistree0007
    @mistree0007 Před 8 lety

    u r amazing. i love u ♥

  • @stafgruglnioe5122
    @stafgruglnioe5122 Před 9 lety +3

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

  • @DocSchuster
    @DocSchuster  Před 11 lety

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

  • @buyanimfusi3079
    @buyanimfusi3079 Před 6 lety

    this is a right angle my hommies LOL
    nice video

  • @plaxen1
    @plaxen1 Před 9 lety +1

    woooaaah! amazing

  • @inteusproductions
    @inteusproductions Před 8 lety +2

    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
      @DocSchuster  Před 8 lety +2

      +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.

  • @sadprose651
    @sadprose651 Před rokem

    what material was the sheet at last? it looked so cool

  • @aditshah1289
    @aditshah1289 Před 5 lety +1

    aand ive got unit 2 tomorrow too good!!!

  • @DocSchuster
    @DocSchuster  Před 11 lety

    Yay! I'm glad you like physics!

  • @meboyz8884
    @meboyz8884 Před rokem

    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?

  • @unicore239
    @unicore239 Před 4 lety

    It is insane to think about how early Young came up with this experiment.

  • @DrSagan
    @DrSagan Před 8 lety +1

    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..

  • @thomasbradley3609
    @thomasbradley3609 Před 9 lety

    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?

  • @brady0340
    @brady0340 Před 4 lety

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

  • @mariaindira748
    @mariaindira748 Před 8 lety +21

    DAMN YOURE SO FUNNYYYYYYY

  • @gianamitchell9399
    @gianamitchell9399 Před 7 lety

    omg you kill me, you are so funny! Love your lectures! Small question, my physics book from Pitt shows m + 1/2 but you have m-1/2...Did I maybe miss something in my book or something you said?

    • @DocSchuster
      @DocSchuster  Před 7 lety

      No. There are several ways to generate this equation. As long as one tries a few different m's, one will find the needed solution. The two representations are equivalent.

  • @aurelienyonrac
    @aurelienyonrac Před 3 lety

    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.

  • @rachitagarwal598
    @rachitagarwal598 Před 10 lety +4

    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
      @DocSchuster  Před 10 lety

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

    • @tarinivenkatanarayan1579
      @tarinivenkatanarayan1579 Před 8 lety

      +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
      @arksrivastava Před 7 lety

      I guess it is spherical only!

  • @internationalremixes6440

    Wow!!! thos hands!!

  • @vasundharabhattacharya5348

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

    • @mistree0007
      @mistree0007 Před 8 lety

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

  • @momshandle
    @momshandle Před 3 lety +1

    God.. I finally got it after 2 years

  • @unbelievable1560
    @unbelievable1560 Před 4 lety +1

    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!

  • @MusicDementia
    @MusicDementia Před 6 lety

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

  • @anthonybrandt320
    @anthonybrandt320 Před 10 lety

    When you clean you're shower with baking soda and vinegar when it goes down you're pipes will it break you're pipes or when you wash it off with water does that neutralize it

  • @mirabbu922
    @mirabbu922 Před 3 lety +1

    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.