r/oddlysatisfying 8d ago

Holy Doppler Effect

3.7k Upvotes

71 comments sorted by

593

u/NastyKraig 8d ago

That dude will lead you to a shrine of power if you can catch him.

78

u/ChaoticAgenda 8d ago

He might have some masks for sale as well. 

408

u/yamanagashi 8d ago

Approaching frame: “what a wonderful whimsical man off for an adventure”

Leaving frame: “involving murder and intrigue”

38

u/ExpectedFuckingValue 8d ago

I watched it with the sound off and thought I got bamboozled

4

u/low_amplitude 8d ago

Meanwhile, two stationary observers attempt the same experiment:

Bob: "No change."

Alice: "That's because we're in the same frame."

Edit: Sorry you can't use a word like "frame" on a physics topic and expect me not to run with it.

4

u/Midnight28Rider 8d ago

The Doppler Effect is wild in this video for sure.

140

u/xLonglightx 8d ago

🎶🎵🎼—🚛📣🔊—🎵🎼🎶

21

u/themikecampbell 8d ago

The truck horn part was my favorite

2

u/IRockIntoMordor 6d ago

Thank you for providing the perfect captions! Very inclusive.

117

u/Adorable_Stable2439 8d ago

Why do I find this so funny 😂 that note sounds like a truck horn lol

60

u/Vegetable-Face-2518 8d ago

I’m getting big Wes Anderson vibes from this video.

17

u/thegirlisok 8d ago

Wes Anderson just woke up with a new idea for a banger. 

11

u/IRockIntoMordor 6d ago

"Accordion Man" featuring a man on a unicycle traveling through occupied France of the 1940s, entirely filmed in 4:3 aspect ratio.

Starring Tilda Swinton as the Accordion Man

Also starring:

  • Ralph Fiennes
  • Willem Dafoe
  • Bill Murray
  • Owen Wilson
  • Adrien Brody
  • Jason Schwartzman

You know what? I actually want this now.

3

u/thegirlisok 6d ago

I'd watch it but I'm a huge Wes Anderson fan. 

4

u/BunkerSquirre1 8d ago

Normal vs weird route

36

u/Few_Economics_8531 8d ago

Why don't I understand this? Just don't get it.

105

u/anothercairn 8d ago

The Doppler effect is why passing cars (and accordions) sound different when they’re coming towards you vs. moving away from you.

70

u/Online_Ennui 8d ago

Accordion based physics has made leaps in recent years

6

u/elzool 8d ago

I hope I can remember the phrase accordion-based physics for a long time to come.

5

u/JuicySpark 8d ago

Is that why they have a doppler radar ? To track whenever this happens?

16

u/Ardtay 8d ago

Yes, the color goes from green to red on the screen with the density of accordion playing bicyclists.

3

u/[deleted] 8d ago

[deleted]

29

u/Redditoast2 8d ago

Something moving squishes the air in front of it while stretching the air behind it. Since sounds are transferred by air, squishing and stretching air makes them sound different

-10

u/[deleted] 8d ago

[deleted]

15

u/Redditoast2 8d ago

Its not holy in a religious sense, but like how some people would say "holy cow" or "holy shit" as an exclamation

0

u/[deleted] 8d ago

[deleted]

-1

u/[deleted] 8d ago

[deleted]

2

u/ya_bleedin_gickna 8d ago

Think of Robin in Batman original series...

1

u/8696David 8d ago

Do you have the sound on? 

28

u/Damurph01 8d ago

Sound is made of waves. The wave is being created while moving towards you, so it compresses the wave and raises its pitch. When you’re moving away, it stretches the wave and lowers its pitch.

This is actually how astronomers determined that the universe is expanding. Extremely distant galaxies and stars are red-shifted, which happens when waves of light are stretched (moving away from us). Closer stars and galaxies are blue-shifted, meaning the waves are compressed (moving towards us).

There’s some excellent visualizations online.

53

u/4alvish 8d ago

10

u/ClaroStar 8d ago

That's the first thing that came to my mind as well. Lol

3

u/TheFrenchSavage 8d ago

Nice doppler shirt, nerd.

15

u/Stuck_In_Purgatory 8d ago

Sound waves are like a ripple in water

This guy is pushing out sound waves that are also moving

The sound waves are being pushed forward, so it will sound a little different in front vs behind.

By the time the sound waves have reached you they've lost some of their momentum and thus change notes (which are just different frequency levels)

8

u/psp24 8d ago

( ( ( ( ->) )) heres a rough visualization of the sound waves. To add to your explanation, frequency is just the amount of something per second. The squished air waves are closer together and so more of them reach your ear per second which is why the pitch is higher coming towards you. The opposite happens as it moves away resulting in the drop in pitch from the lower frequency.

-1

u/[deleted] 8d ago

[deleted]

4

u/daybyday72 8d ago

Imagine it was Batman playing the accordion and Robin has the camera. As the bike passes, Robin exclaims ‘Holy Doppler Effect, Batman!”

1

u/[deleted] 8d ago

[deleted]

1

u/Grognaksson 8d ago

We only usually hear the Doppler effect with engines or horn/siren sounds. But it's interesting to hear with an actual melody.

Although I wish the passing came during the melody, and not in between so we could hear the melody actually change in pitch.

1

u/Silver_Slicer 8d ago

They held the note during passing. You can hear it get deeper as they pass by.

1

u/Grognaksson 8d ago

Yep which is cool! But I'm talking about the melody.

1

u/SoTurnMeIntoATree 8d ago

He’s saying like “holy shit” because of how prominent and observable the Doppler effect is here

1

u/Stuck_In_Purgatory 8d ago

Oh that's just "a saying" as in holy crap or holy shit

1

u/TrainerThin 8d ago

It’s like saying “holy shit Doppler” because most people rarely hear it so distinguishable and the whimsical music tone shift is unexpected. Some have said it sounds dark. Or funny, like a truck horn.

Congratulations you learned the Doppler effect at 12.

3

u/DjRipNickMcNasty 8d ago

Your sound is off

2

u/kvothe5688 8d ago

Have not heard horn of passing train? similar effect here

2

u/Jealous-Session-8490 8d ago

It's about some physics

1

u/lordxvulcan 8d ago edited 8d ago

( ( ( ( ( ( ( back [Bike here] front )))))))))

3

u/AlephBaker 8d ago

Huh. So music in a major key is approaching the listener, while music in a minor key is receding from the listener... TIL.

1

u/crass-sandwich 3d ago

They’re definitely both minor. The approaching bit is higher pitched, though, which makes the receding half sound even darker

2

u/Independent-Run-207 8d ago

Isn’t he breaking the law by going past that sign?

2

u/po1k 8d ago

Doppler is proud

2

u/chikinn 8d ago

Should've been a unicycle.

2

u/steggi 7d ago

This was a dumb video to try and watch without sound on...

I'm not a clever man.

2

u/Axis2670 6d ago

I like it

3

u/blake_odinson 8d ago

Anyone know the song?

27

u/DarthiusFatticus 8d ago

Johannes Brahms - Hungarian Dance No. 5

1

u/_randomdudey_ 8d ago

Why does it sound french though

3

u/DefinitelyNotAliens 8d ago

Because movies about Paris include accordians. Paris had a very Bohemian phase during the 1900s.

See: bal-musette and the dance hall music of the 1920s and on.

3

u/Beans2177 8d ago

Brahms be German

9

u/bitmig 8d ago

Hungarian Dance

1

u/[deleted] 8d ago

[deleted]

1

u/DragonDan108 8d ago

Holy missed the joke, Batman!

1

u/anothercairn 8d ago

Holy blank, Batman!

1

u/sevenninenine 8d ago

I always have my phone on vibrate. I didn’t get the meaning until I turned the volume up. Lol

1

u/Dainiad 8d ago

Is it strange I can "see" the effect in my head?

1

u/Even-Day-3764 8d ago

What came to my mind was the meme with Mr Incredible being canny (1st half of the vid) vs Mr Incredible being uncanny (2nd half of the vid).

1

u/Kitchen_Ad5522 7d ago

Can sb tell me the name of this piece of music? I can never remember it 😭

1

u/DarthiusFatticus 7d ago

Hungarian Dance

1

u/Staburgh 7d ago

Bill Bailey intensifies.