The Doppler Effect: what does motion do to waves?

A visual explanation of the Doppler effect.
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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.

[@alfredjustindumalagan]

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

[@muchiribantu3226]

Sad that they aren't as popular. smh.

[@user-BadUsername]

@@muchiribantu3226 it is sad

[@allys8572]

@@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*

[@chrisdawson1776]

@@allys8572🤡

[@support_eu6397]

What’s the problem with “Hey guys”?

[@marcojanssen8099]

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

[@beenasathish1881]

Marco Janssen same here!

[@alexanderfrandsen2113]

Me tooooo bro

[@ru406]

Marco Janssen Me to! I'm so glad I found it!

[@tioluwaniajao993]

Marco Janssen Totally agree

[@tuscan9617]

And you will forget everything you learned when you wake up tomorrow.

[@karlrichmondbtan]

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!

[@Mond3e]

this comment is 5 years old you probably have a job now

[@JimmyLundberg]

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

[@ayaaljmi6469]

Look how time goes fast

[@aviralgupta6051]

friend's keep this comment as top comment for future some you may see it again. with your replies

[@mrsssman23]

@@JimmyLundbergI’ll come back in 5 years😂

[@zoejoaquin5534]

anyone else's physics teacher send them here during quarantine

[@liorschifrin]

mee

[@lykapelle1012]

yep

[@yeetyeet5654]

Just here by curiosity

[@stephaniemendoza2610]

YEAH

[@jcpenny8399]

lmaooo

[@D4RKDJBJ]

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.

[@norraveemoleeses8948]

+Edit.Mine [Music, Intros, Lyrics + more] So you fail the class?

[@D4RKDJBJ]

nah. got an A- (im in year 12)

[@MadMovieRater]

you did your physics exam 3 weeks ago? I'm in year 11 and the year 12's at my school are doing their exams with us at the same time (like right now ugh) but congrats on the A I find Physics really hard

[@D4RKDJBJ]

hey thanks. I have never found physics hard and everyone thinks im weird when it comes to physics. But I just basically think in a logical way. When you are given a question in physics. Try to imagine it or even draw the situation on paper to help you discover a "what will happen" or "how it will happen". Then just apply formulas. hope i helped

[@MadMovieRater]

Edit.Mine [Music, Intros, Lyrics + more] okay thanks I'll try it

[@gunslingergirl2579]

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

[@neerajladdu]

😃😃

[@Orion-hk4op]

On the sidewalk

[@abel9726]

I hope they recorded that honk by standing in the middle of the road and infuriating drivers. Everything for science!

[@satinderjit4]

I mean you never know what the intentions are.

[@Idolismo]

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

[@lydiamishel]

Teacher: My brain: Nyoooooooom

[@SMN-uy2gl]

A chu chu train?

[@muchiribantu3226]

If that is some sort of learning disability, I think it's very insensitive! LOLest

[@OfficialRedTeamReview]

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

[@MockeryManor]

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.

[@arkapravabiswas4672]

"Tibees" might help you

[@smindell1]

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

[@tinyeung3468]

ya!

[@anthonylujan9917]

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.

[@Rema_Sopr]

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

[@IDylanRF]

are you tying to hypnotise me g

[@uhitsethan]

ya epilepsy warning

[@MichaelCheng628]

lmao ikr

[@belaluddin6807]

Dts truly hypnotysing

[@lizziewalker178]

Lol!!!

[@user-wq9dr8vq1l]

😂😂I think so

[@T-T-jx3wr]

This helped me a lot thanks...but the ending was kind of depressing

[@dawtesla]

+..T-T... That was the Big Bang, BS part.

[@dawtesla]

***** Are you an ungodly heathen?

[@dawtesla]

***** Let's hope that invisible friend doesn't judge you some day. To die the second death is the worst. Good luck to you.

[@dawtesla]

***** Your hate speaks volumes, please learn to forgive those that have hurt you. You don't want to live your life with that poison in your system. It will only hurt you more.

[@dawtesla]

***** Good day

[@PavelHolec]

The animation has one flaw - the circles showing the wave propagation do not move with a car. A sound travels from the spot it was created, independently on how its source is moving.

[@encryptedaviation1452]

The Doppler effect in radar works like this, the colour spectrum of visible light when an object is approaching towards you it will be red for example but green in the middle and blue when away. If everything in the radar is standing still it becomes noise. If an enemy aircraft is not moving in a direction where the Doppler effect is happening and moves into the right place, it can become one with the noise on the enemies radar and effectively disappear from their long range sight. I learned this in DCS World.

[@ssgoko88]

What the fuck is green shift supposed to be 🤦🏼‍♂️🤦🏼‍♂️🤦🏼‍♂️🤦🏼‍♂️🤦🏼‍♂️🤦🏼‍♂️

[@mirekkkwtf]

today is halloween and I'm going as doppler effect, thanks for nice explaining

[@juanaids]

you're depressing

[@obioravo]

lol

[@E-2.71]

OK!! Sheldon!! TBBT

[@ryansmith6927]

Your going to dress up as a fire truck running down the road screaming... so people in front of you hear it different when behind you. I thought I was crazy

[@mohdasifraza1900]

Hi

[@sashaboy3]

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

[@AltShiftX]

Sasha Ahrestani I'm glad it helped!

[@mantrach3468]

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

[@TheOmegaLeaf]

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

[@Jira9]

5 minutes ago: i understood nothing Now I am hypnotized and realise that I am nothing.

[@elizabethkim1558]

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!

[@propagandauniversity7804]

that was really cool. thank you

[@AltShiftX]

Cheers!

[@hamzajafar1333]

it was nice!!!!!!

[@imyouandurme]

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 :)

[@mangeshrathod3235]

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

[@jekaufman5051]

I was looking for something like this - and this was fantastic. Thank you! (Hope you're still out there somewhere, doing great things).

[@TheBatHobbit]

And now he does game of thrones videos!

[@whatisthis839]

Too bad really. I loved how he went about explaining this.

[@cooldawg2009]

He does just as good at explaining Thrones! Funny as hell too

[@lukebusta1386]

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

[@mathdna101]

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

[@subarbar5985]

that's rue

[@norman8543]

And you got away with it.

[@wofu2354]

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

[@JH-ux1re]

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!

[@LaLoLa731]

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

[@AltShiftX]

LaLoLa731 Thank you!

[@charlottexo9533]

who's here in quarantine doing online school -_-

[@kyliescott4791]

Me

[@shreenidhhi8633]

Me lol

[@abbyanderson1650]

Me

[@barbarapawlos121]

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

[@Tullerman]

0:30-0:50 - I've heard about the concept before but now I finally understand it, that imagery made so much sense :)

[@Monadoabyss]

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.

[@Firmus777]

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

[@koss3089]

Nah I think GoT is much more important :)

[@123fckfckfck]

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

[@alamusleh1610]

how did the project go 4 years ago? haha

[@anthonyt219]

Thanks for bringing up the car horn example. Its easier to understand when you know what to look for and actually pay attention to the sound. The sound doesnt sound the same the entire time, or you could actually hear the sound changing from high to low pitch when its in motion. The low pitch part, it actually sounds like its being drawn out or stretched due to the lower frequency.

[@Lip_Gallagher]

Great video. Watched other videos summarizing the Doppler Effect and this one was my favorite

[@ashwhite5920]

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

[@AltShiftX]

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

[@gsq547]

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

[@takphysics1906]

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

[@Alemotociclista]

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

[@axdx2320]

Only youtuber i like except for useful tutorials. No hello guys, no stupid animations. Simple, Precise, Concise, Punctual. Rare thumbsup moment.

[@lmfaowtfinghell]

ahaha I like how at the ending actually said bye. You rarely hear that in these types of videos :P

[@jameslatini]

Fun Fact: 90% of the views on this video are 8th grade Earth Science teachers

[@phillipkile-poulos5632]

James Latini or students like me

[@Madison-ps6yb]

actually physical science but yeah

[@oliviagarden9460]

The other ten percent are Big Bang watchers

[@SanjayKumar-wo6wr]

I'm in grade 7th...this is my father's ID

[@abigailrae1592]

haha actaully a sophomore in biology lol

[@theabsolutelymadprogrammer6590]

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

[@Cassiecan]

I have a physics exam tomorrow and I'm so happy that my favorite GOT theory channel is also going to help me pass my class. Thank you!!!

[@gpokela]

I am going to use this video in my powerpoint presentation about waves for my 8th grade students. Thank you!

[@HeyyItsSash]

Watching this 5 minutes before my physics exam And I actually understand it now so thanks

[@LoloLuvin]

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!

[@CaptainMcLaughlin]

I watch your GOT content so as a teacher when this popped in while looking for lecture material; I thought I was stroking out.

[@Kyle-zv7gt]

Been watching your got videos for a while and realised that you made this that we got showed in class Aswell :)

[@mariettayeranosyan6113]

First year university student- this is the only thing that made me understand the Doppler effect for my Astronomy midterm :)

[@anacecilliacma5564]

This is one of my favorites videos. I watch it again everytime I can

[@sumd4ys]

Awesome video! Short but teaches you well and easily. My first yr uni astronomy course teacher attached this vid for us to watch haha

[@AbstractAbsorption]

Just watching this for fun after a AltShiftX GoT binge. Cool stuff.

[@cooldawg2009]

same

[@alamusleh1610]

yes

[@MehdiZxParsii]

I was in the library and had biophysics exam, and doppler effect was one of the subtopics which i had some difficulty to understand. For a short break, i just opened one of your game of thrones videos, and it was well narrated, so I checked your channel for more game of thrones stuff but found this which was quite well explained as well :)

[@ashvikasingh5465]

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

[@ianlambert6841]

YES. Thanks VERY much for this. A very good video. You've renewed my knowledge of this from my school science classes from a very long time ago. Now in my 60s.

[@fatamy8597]

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

[@user-vb4fs6wb4s]

The last 5 seconds are the most adorable on this channel

[@juliewasnthere]

My physics teacher used this to teach us the Doppler Effect, and coincidentally I’ve watched some of your other videos! Great stuff man!

[@nayeonies12]

im learnin this in big history

[@Richard_Nickerson]

I love this educational stuff. Obviously, don't stop the Song of Ice and Fire stuff, but please keep doing these educational videos.

[@Maskoff758]

Thanks, this was really helpful!

[@ronalds271]

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.

[@dianamcortes-galindo6250]

This explained everything so well i liked and subscribed just to appreciate the post 😫🤚

[@jaredlohmeyer7045]

My 5th period class says this was a very informational and AMAZING video. THEY LOVED IT!

[@noalarm2]

This is not what we said

[@noalarm2]

We dissagree

[@noalarm2]

Lol

[@Rich.ard72]

Great video, very well explained

[@chrisrolka1934]

I was watching that episode of the big ban theory when I watched this in question of what the Doppler effect

[@shawnrostker4991]

that moment when you're in a missile defense course at Georgetown and the professor throws on an alt shift x video in the middle of class...legendary

[@mukeshsuman9306]

you are helping many students sir, i love physics and thank you for this video sir..........

[@vickidawe5242]

This video is perfect for explaining the phenomenon to my class! Thanks so much!

[@AltShiftX]

+Vicki Dawe I'm glad it helped!

[@hugoalmstrom9479]

Vicki Dawe you're an awesome teacher

[@TheReaMrBurntSausage]

dude I watch your game of thrones videos and saw this in class and you made both my mind is dead currently

[@chrisyoo1795]

Damn that was an extremely well done explanation, I've been scouring the internet for a long time and never seen something so clear and concise.

[@dewdanoob3YT]

1:16 I can't believe that he actually notated the notes pretty on point... unlike some other people... but that's unimportant. Hats of to you Alt Shift X.

[@Andrea111116]

loved it! Fun and to the point!

[@youngprince716]

i got a lot more than i expected out of that. very cool ending.

[@lilianaurora6029]

This might be the best teaching video on youtube. Thank you, you just saved me.

[@UnderstandingCode]

I learned a couple things, couldn't peel my eyes away. GREAT VIDEO!

[@plsmaurice5549]

who else came to watch this after Carson's new video?

[@MrBerry-er5ti]

Me

[@gavinsfriend2281]

shhh.

[@dawtesla]

Great video, except for the Big Bang reference @ the begging and end of the video. Cheers

[@gnsindihome5528]

Subscribed... You deserve it me and my mum were racking our brains over this... nice explaining

[@mousetrap8790]

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

[@Cadrieldur]

Very Educational! thank you

[@yazasaka7155]

the whole thing abt earth being lonely in a distant future just made me really depressed ngl

[@norasurfside547]

don't worry, it's not true!

[@jimmypk1353]

By far, THE BEST explanation I've ever seen in my life! THANK YOU!

[@icebearies]

uploaded on my birthday.... this is another point why i chose this vid thx for the help :)

[@karencarranza6901]

Thank you! You explained this much better than my professor with a strong Asian accent.

[@alamusleh1610]

ikr

[@VentilianVexus]

Rn I’m failing my Earth systems class. After this video, it made my grade go back up to an A. 👏👏👏

[@hellwroughtangel]

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

[@chasehenze9785]

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

[@verynice6685]

Great Video

[@yvindlorentsen7048]

Thanks! This helps- ALOT!

[@gjhgvhgvhvgvg256]

racist

[@maryamnasseem2451]

i have seen endless videos about this topic TYSM this is the only one that helped me💞💞

[@atharvaadsul9566]

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

[@karn33333]

oh yeah, helped tremendously.

[@DuasFuas]

0:23 wooow trippy :DD... sorry :D thank you for explanation :)

[@ronojitpal6697]

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

[@normdurkin6425]

I was confused by other videos I watched.. this is best video I have seen explaining it. I understand now.. thank you Professor..

[@_SunehaDeepKour]

Thank you Sir. This is amazing. I have my test tomorrow. Wish me luck.

[@Sandeep_-choudhary]

Rahul sir army

[@sarahlatimer3760]

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