Tap to unmute

The Doppler Effect: what does motion do to waves?

  • Published on Jun 5, 2013
  • A visual explanation of the Doppler effect.
    Subscribe: x-vid.net/channel/UCveZ...
    Support on Patreon: www.patreon.com/AltShiftX
    Twitter: altshiftx
    Created with Toon Boom Studio 6.
    Car sound: en.wikipedia.org/wiki/File:Spe...
    Night sky image: en.wikipedia.org/wiki/File:Ver...
    Video from The Big Bang Theory is the property of its creators, used here under fair use.

Comments • 2 014

  • Marco Janssen
    Marco Janssen 5 years ago +3698

    5 minutes ago, I didn't understand this at all. now I totally do

    • Kisa Vorobianinov
      Kisa Vorobianinov 2 months ago

      The most important part of the Doppler effect for sound waves is that - without a stationary medium carrying the waves, there will be no effect. Waves are carried by a stationary medium, which is the absolute reference point for the wave. The wave emitted to all directions. Wave is ahead of the previous ones and lags behind only because the air is motionless. The wind makes its own adjustments to all sound effects, including Doppler.
      Therefore, the Doppler effect for electromagnetic waves, which has not been experimentally proven, is only an assumption. As well as the fact that its consequence is a "redshift". If it were so, then there is no vacuum. There is a motionless universal ether as a carrier of waves. As an absolute frame of reference of space. This is the essence of the Doppler effect.

    • Dan_and_Pip
      Dan_and_Pip 5 months ago

      5 minutes ago i didn’t understand this, now I think I’m Prof Brian Cox

    • Timothy Currow
      Timothy Currow 6 months ago

      (The apparent change in the frequency of a wave caused by the relative motion between the source of the wave at The Observer.)

    • Rosa Lin
      Rosa Lin 6 months ago

      Best explanation

    • Jonathan's Music, Compositions, And Arrangements
      Jonathan's Music, Compositions, And Arrangements Year ago

      me too. I should have watched this before my test

  • Alfred Justin Dumalagan
    Alfred Justin Dumalagan 2 years ago +665

    the type of videos that no one hates:
    no annoying and loud intros
    no "hey guys"
    straight to the point
    and old most of them

    • Ally S
      Ally S 3 months ago +2

      @NoahNightKing And if it's a beauty "guru" video, expect 5 minutes of stupid faces and outtakes that they could've easily not added in.
      "Oh Mai GWAD YALL! I dropped my water. " *Video starts at **6:34*

    • NoahNightKing
      NoahNightKing 5 months ago +10

      WHAT'S GOING ON GUYS WELCOME BACK TO ANOTHER VIDEO! If you're new here, make sure to leave a like, subscribe, comment for a chance to win the giveaway, and share this video with all your friends. Before we get into it, I'd like to give a shoutout to my sponsor...

    • The Gamer
      The Gamer Year ago

      @Muchiri Bantu it is sad

    • Muchiri Bantu
      Muchiri Bantu Year ago +14

      Sad that they aren't as popular. smh.

  • Karl Tan
    Karl Tan 4 years ago +197

    I realize that this is a very very old video, but I would like to state that this is very well made. It's informative and visually entertaining!

  • Idolismo
    Idolismo Year ago +49

    This was probably, hands down, the best explanation I could've hoped for. Thank you.

  • Марко Јовановић

    8 years later this is still one of the best explanations, good job, great video!

  • Mangesh Rathod
    Mangesh Rathod 3 years ago +25

    Brilliantly explained!! The concept has become crystal clear to me now. Thank you so much.

  • Gunslinger Girl
    Gunslinger Girl 4 years ago +347

    "Because you're standing in the middle of the road." LOL

  • Elizabeth Kim
    Elizabeth Kim 3 years ago +9

    Super helpful! I've been staring at my textbook with a car and observer for about 10 min and had no idea what the waves meant, but your 3min explanation makes it easy to understand. Thanks!

  • Brianna Manoel
    Brianna Manoel 4 years ago

    You explained that so easily and in an easy to decode manner. Thank you

  • Skwidward the 4rd
    Skwidward the 4rd 6 years ago +1415

    I have a test tmrow. and instead of reading 10 pages. I look at a 3 min video that covers the whole thing. thank you sir.

  • Shaylyn O'Neill
    Shaylyn O'Neill 3 years ago

    The Doppler Effect is simply what wavelength reaches your eye. When the waves are closer together we see them in a higher frequency but when the waves are farther apart they are in a lower frequency. I was surprised to learn about redshift and that stars can change color.

    MATHDNA 7 months ago +8

    This is the best explanation and much better than my high school teacher's did. Big thank to the creator because of this video I can understand how to derive the Doppler equation, how the motion can really affect the wavelength. I try to make my own explanation video, and I hope it's easy to understand

    • WoFu
      WoFu 7 months ago

      we can go further if we get what we need. and we get it from this video

    • norma n
      norma n 7 months ago +1

      And you got away with it.

    • subarbar
      subarbar 7 months ago

      that's rue

  • The absolutely mad programmer

    thanks I have a physics test coming up - this video is the absolute best , straight to the point and a simple explanation so that everyone can understand

  • Jeffrey Danowitz
    Jeffrey Danowitz 4 years ago

    Useful, direct and concise. This is a very "well put together" video.

  • RedTeamReview
    RedTeamReview 7 years ago +752

    shame there aren't more like these. useful for class

      ARKAPRAVA BISWAS 3 years ago

      "Tibees" might help you

    • Rillages
      Rillages 3 years ago +3

      RedTeamReview Wow....cool to see you here, as I go down the rabbit hole (I have no idea why all of a sudden I got interested in this topic). Looking forward to your Game of Thrones breakdowns. Peace.

  • Ronald S
    Ronald S 2 years ago +5

    You have a gift to explain things. Excellent video. Can you please post video's explaining important concepts covered in AP Physics 1 and AP Physics 2 courses. A lot of students self study these subjects and will benefit tremendously.

  • Thalia Siani
    Thalia Siani 5 years ago +1

    That was excellent! Enjoyable, easy to understand and very educational. Nice work mate!

  • Jess An
    Jess An 5 years ago +2

    Awesome! this is so clearly explained and the graphics are very helpful. Thank you so much!

  • J Webster Smith II
    J Webster Smith II 3 years ago

    great vid. regarding the last part, i've been tracking stars using Stellarium and they don't seem to be moving away. in fact, they're pretty much the same as they've been for thousands of years. thus why we have the anthropomorphization of the constellations. because they don't change. and they are moving around us, collectively. like a giant clock. pretty wild. anyhow, great work.

  • Ashvika Singh
    Ashvika Singh 5 months ago +2

    I learnt so much...All my doubts were clarified. Thank you for the fantastic explanation.

  • Michel Arendt
    Michel Arendt 4 years ago

    Thank you for the video, you've explained exactly what I was looking for which was the Red Shift (doing personal research on the expansion of the universe).

  • Ethan Boggs
    Ethan Boggs 5 years ago

    This was a very useful video! Thank you for producing this.

  • Olav3D Tutorials
    Olav3D Tutorials 4 years ago

    Well explained and simple! Good job :)

  • Sara Mindell
    Sara Mindell 7 years ago +164

    I really enjoyed your explanation of the Doppler Effect because you presented it with humor and concise and clear animation! Great job!

  • Trisha Keel
    Trisha Keel 5 years ago

    EXCELLENT!! Loved every minute of it. Wished you had done a bit about the color of sunlight in morning vs. afternoon, but this was great. Thank you !

  • Asa Franckewitz
    Asa Franckewitz 3 years ago

    good job explaining how the waves frequency changes as it passes and how this is also how light similarly works!

  • Willfull Overlord
    Willfull Overlord 4 years ago +1

    WOW man not only you have explained Doppler effect, light and sound frequency, and wavelength but I also figured out why and how we have evidence of space that is constantly expanding.

  • Priyanka Kohli
    Priyanka Kohli 4 years ago

    Very well explained and was very useful and helpful. Thanks👍🏻

  • Jc Bernal
    Jc Bernal 4 years ago

    Thank you for this explanation , really helped me understand the Doppler effect

  • Jolien Roskams
    Jolien Roskams 5 years ago

    Very good explained! Easy to use in my class! THANKS

  • Epicdelia
    Epicdelia 4 years ago

    Wow, this was so well explained! Also, really cool animations. Thank you.

  • Rogue Squid
    Rogue Squid 2 years ago

    Great explanation, simple delivery. I like learning this way! Thanks

  • Sasha Ahrestani
    Sasha Ahrestani 7 years ago +67

    This helped me a LOT. Thank you! We studied this in science class sometime this year, and I was reviewing for finals, and I found this. My teacher didn't do a very good job of explaining, but this short video helped greatly :D

    • TheOmegaLeaf
      TheOmegaLeaf 7 years ago +1

      My teacher taught me alot but sometimes I need to hear the information repeatedly for it to set in my brain. Thanks!

    • mantrach
      mantrach 7 years ago +2

      +Alt Shift X I'm cramming for a test tomorrow and our teacher hasn't taught us ANYTHING! This helped greatly though :D

    • Alt Shift X
      Alt Shift X  7 years ago +11

      @Sasha Ahrestani I'm glad it helped!

  • Spideymaguire
    Spideymaguire 2 years ago

    I am learning physics at the moment and really interested in it, might give this a closer look. Thank you

  • Ali Schultz
    Ali Schultz 5 years ago

    Thank you, I'm reading a book that talks about this a lot and their explanation didn't make sense to me but this video really cleared it up!

  • James Johnson
    James Johnson 3 years ago

    Brilliant animations and well-explained narration!

  • TAK Physics
    TAK Physics 11 months ago +5

    Consise, simple. What a great source of information. Thank you!

  • Atharva Adsul
    Atharva Adsul 3 years ago +1

    You've done really a very great job.
    Now it seems very easy. Thanks a lot.

  • Lois Owolabi
    Lois Owolabi 4 years ago

    This was a spectacular explanation that immediately changed my mood and perception towards the physics that I've been studying for the past 3 hours. Thank you!

  • Deanna Engler
    Deanna Engler 2 years ago

    This is the best explanation I have seen yet. Thank you for helping my students!

  • Saketh GN
    Saketh GN 5 years ago

    Lucid and appreciatable explanation.Thanks a lot.

  • Michael Martins
    Michael Martins 3 years ago

    Thanks for the amazing explanation with clear analogies.

  • Chase Henze
    Chase Henze 7 months ago

    This was brilliant! Short and sweet, and some nice applicable info too!

  • maria davoli
    maria davoli 5 years ago +1

    This is one of the best physics videos i have ever watched, thank you sir :)

  • Nisal Kobbekaduwa
    Nisal Kobbekaduwa 4 years ago

    Thank you very much saved me a lot of time and clearly understood the concept

  • MISSION101
    MISSION101 2 years ago

    Came for an explanation of the Doppler effect, stayed for the existential depression over a distant lonely earth. Love the simple yet not oversimplified explanation

  • F i o n a
    F i o n a 4 years ago +2

    Thank you 😊 this helped me immensely. I appreciate your help

  • Laiba
    Laiba 4 years ago +1

    That is amazing! I totally understand Doppler's Effect now, in three minutes! Keep it up!

  • Own KJ
    Own KJ 3 years ago

    Amazing presentation! Short and simple to understand!

  • imyouandurme
    imyouandurme 8 years ago +17

    Great visual explanation, thanks! I knew what the effect sounded like but didn't exactly understand how the phenomenon worked. This was very helpful! Excellent presentation :)

  • meg 18
    meg 18 2 years ago

    The explanation was fabulous..
    It is much easier to see this video and understand.
    When I read the definition in my textbook..I didn't get it but now....😎
    Thank u sir!!

  • Derek Moline
    Derek Moline 2 years ago

    Great video. I used it to explain the concept to my child for his science class. Thank you!

  • Ronojit Pal
    Ronojit Pal 4 years ago

    From not knowing doppler effect at all to understanding what it actually is and why it happens. Now i can explain others too. Thanks !

  • Emlarun
    Emlarun 3 years ago +1

    I didn't understand earlier. But now, i understand all of it! Thanks for a good explanation.

  • 123 456
    123 456 8 years ago +30

    Please make more physics/science videos! I know your GoT vids must be more popular but your ability to produce succinct yet clear and intuitive explanations for scientific concepts is far more valuable in my opinion.

    • Koss
      Koss 5 years ago

      Nah I think GoT is much more important :)

    • Firmus
      Firmus 5 years ago

      Maybe he could do a separate channel and move these videos there.

  • Aysha Khatun
    Aysha Khatun 4 years ago

    You made my concept clear, thank you so much 💙

  • Somar Mohammad
    Somar Mohammad 5 years ago

    great video but i just want to point out that although it's true that motion causes redshift to light, it’s the expansion of space that’s causing this redshift to stars and galaxies and not motion because they are not moving away from us it's the space between us that's expanding. I hope you point this out somehow so no one gets confused.

  • Leila Maza Blissett
    Leila Maza Blissett 6 months ago

    Thanks for that! A fantastic clear and to the point explanation.

  • Lakshay Makhija
    Lakshay Makhija 6 months ago +2

    Very well explained, physics if you don't understand, it's the fault of whom you are being taught by, even a layman can understand the special theory of relativity, it's just who Is teaching you

  • Luke Busta
    Luke Busta 6 years ago +3

    Awesome video! I always pull this video up when students have questions on the Doppler Effect. Your graphics and verbal explanation are so clear and quick! Thank you

  • Martin Durak
    Martin Durak 7 months ago

    Amazing! Short but super understandable thank you!

  • Mouse Trap
    Mouse Trap 2 years ago

    This is a wonderful video. Very easy to understand, simple, and entertaining. I love it. Makes learning easier.

  • Elmore Ignacio
    Elmore Ignacio 2 years ago

    Excellent presentation of the Doppler effect. I can apply this now with satellite communications using amateur radio. Two thumbs up!

  • Mehak Mansoori
    Mehak Mansoori 10 months ago

    Totally got the concept.. very well explained.. thank you:)

  • Alemotociclista
    Alemotociclista 10 months ago

    best video ever!!! I love how synthetic, informative and entertaining it is. Thank you so much!!!

  • James
    James 3 years ago

    Probably one of the more detailed explanations. I really appreciate what you did here. It helped me with my science class as my Professors stupid video wasn't functioning lol.

  • Do Not Subscribe To The Channel

    Thank you so much for this great explanation ❤️. Now I know how we can apply the Doopler Effect, and most importantly I know how scientists figured out the Big Bang theory and the expansion of the universe. 😍

  • Joan Horn
    Joan Horn 4 years ago

    This video is the best I've found....correct length, illustrates sound and light, graphics and narration are easy to understand. I use it in geology class.

  • crumpetslilly
    crumpetslilly 7 years ago +14

    I loved the video, very eloquently put and beautiful graphic work!

  • Siddharth Bhatt
    Siddharth Bhatt 2 years ago

    Perfect. Crisp, clear, to the point. Thanks!

  • Joe K
    Joe K 3 years ago

    Does the speed of the object that is moving effect the wave that it emits ? For example, if I was moving at the speed of light and honked my horn in my imaginary machine, and then suddenly stopped, will I hear that sound much later since my speed would be much faster than the sound waves? how would the sound waves look in an object moving at the speed of light and honking a horn? interesting stuff, i like it !

  • Kate Unsworth
    Kate Unsworth 5 months ago +1


  • hellwroughtangel
    hellwroughtangel 2 years ago

    Best explanation I've listened to, been trying to understand this for a while.

  • Sarah Christensen
    Sarah Christensen 4 years ago

    Thank you. This video was short and sweet. And I think the Doppler effect and the Redshift are easier to understand with this video.

  • Omar Akram
    Omar Akram 11 months ago

    Thank you for creating this. Really helpful. What software did you use to create this animation?

  • Tariya Poshar
    Tariya Poshar 3 years ago

    Hi, great video! Just a query, why would the waves become compressed on one side and further apart on the other side? Is it because the direction of travel causes the waves to compress and so to keep the energy of the wave consistent the opposite happens on the opposing side of the waves?

    • Timothy Currow
      Timothy Currow 8 months ago

      For instance, as a loud ambulance is approaching you, the sound waves are compressed and very short and heard at a higher frequency. As the ambulance passes, the wavelength would suddenly stretch, same amount of wavelengths but stretched out at a a slower rate and perceived at a lower frequency.

  • Synnøve Økland
    Synnøve Økland 5 years ago

    I read the chapter of my science book twenty times trying to understand this, but this video perfectly explained it. Thanks!

  • Oriana Göldi
    Oriana Göldi 5 years ago

    Absolutely great video! Thank you so much!

  • esha
    esha Year ago +1

    Thank you so much! This video helped me out tons! 😁

  • Vladyslav Bukhanevych

    this man taught me more about the doppler effect more in five minutes than my teacher did in two whole hours

  • FreakingFack
    FreakingFack 5 years ago

    Now I might be wrong, but at the university I studied physics at, we were frequently reminded that redshifting isn't the doppler effect; biggest difference being that the doppler effect is about waves moving in a medium and light being particles mean it's not the same. The redshifting of light is explained in general relativism.

  • Reuben Charles
    Reuben Charles 5 years ago

    Simple yet complex. Very well explained

  • JH
    JH 8 months ago

    I found this video when I searched for some explanation of wavelength and visible lights. I’m so happy that this video combines what I heard before, red shift and Big Bang, with what I’m learning now in college. Perfect!

  • B Kraus
    B Kraus 5 months ago

    One of the other examples, and the one I deal with most in my job is the doppler effect in the tracking frequency of the satellite beacons during our Transfer Orbit Support Services. When the satellite we are tracking might have a beacon frequency of 4191 MHz if said satellite is moving fast towards our ground station the frequency may need to be offset to a higher frequency i.e. 4191.875 MHz depending on the acquisition range of the tracking receiver on the other end when it is moving away from the ground station we would have to offset the frequency lower i.e. 4190.875 MHz.

  • Lesley Pain
    Lesley Pain 2 years ago

    That was great and very easy to understand. Well done

  • Ash White
    Ash White 7 years ago +39

    Hi. Thanks for this video, it is excellent and my students will benefit from the time and effort you have put it.

    • Si Qi 樂
      Si Qi 樂 7 years ago +2

      Suddenly realize that my name is soo similar to yours lol.

    • Alt Shift X
      Alt Shift X  7 years ago +11

      @Ash White Cheers, I'm glad to hear that.

  • Pavs pogula
    Pavs pogula 5 years ago

    Thanks for the video it was really nice. I appreciate your effort for making people understand.

  • Akhil Vijay
    Akhil Vijay 2 years ago

    Really good examples, May I use your source to my ppts?

  • Anthony Lujan
    Anthony Lujan 2 years ago

    How strange it is that I was subscribed to Alt Shift X for years for the GoT content and a random google search to assist in an Astronomy course brought me here. The good new is Alt Shift was still pumping out quality and super-informative videos. Thank you kind sir.

  • Barbara Pawlos
    Barbara Pawlos 2 years ago

    this is one of the best explained videos ive seen. from visuals to text to the speaker. incredible.

  • Fat Amy
    Fat Amy 6 years ago +4

    Amazing, it actually makes alot of sense now. Thank you so much!

  • Catherine Tan
    Catherine Tan Year ago

    Beautifully informative :) thank you!

  • Julie Exline
    Julie Exline 4 years ago

    You did in 3 minutes what my tutor couldn't in 40! Thanks!

  • Bowen Huisman
    Bowen Huisman 4 years ago

    Redshift seems like an interesting concept and something I wouldn't have thought would be related to the doppler effect at first glance

    AMIR RESHI 2 years ago

    Beautifully explained in only 3minutes👏

  • Phillip Lindholm
    Phillip Lindholm 5 years ago +21

    I got something out of it! Thank you so much! I have a project in school and this really saved me :)

    • Ala Musleh
      Ala Musleh Year ago

      how did the project go 4 years ago? haha

  • Gary OSullivan
    Gary OSullivan 2 years ago

    Very well explained, thank you 👍

  • Sarah Latimer
    Sarah Latimer 3 years ago

    This is wonderfully done. I use it every year in my Earth and Space high school science class.

  • Daniel Musser
    Daniel Musser 5 years ago

    What a great explanation, thanks!

  • Linde
    Linde 2 years ago

    This was really helpful, thank you!