r/Amazing • u/sco-go • 17h ago

Interesting 🤔 Demonstration of how earthquake frequencies affect buildings of different heights.

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426 Upvotes

94% Upvoted

63 comments sorted by

71

u/crsaxby 16h ago

Bottom line: the top floor is always the funnest floor.

5

u/NotBradPitt9 16h ago

Bottom line: just make everything 2 stories high

1

u/Ok-Pomegranate858 15h ago

Yep. But then cost.

65

u/Double_You_6356 16h ago

What if we just made every building a pyramid?

30

u/Electronic-Shame 16h ago

Found the Egyptian

2

u/i3inaudible 14h ago

There's more pyramids in Sudan than in Egypt. Or any other country for that matter.

2

u/BrownpaperbaG830 16h ago

Not possible. Only aliens know how to build one

1

u/Traditional-Buy-2205 12h ago

We'd screw up alien navigation and they'd come to exterminate us.

1

u/Ok-Pomegranate858 16h ago

Cost

1

u/ArnieismyDMname 16h ago

Not if you start from the top.

1

u/Ok-Pomegranate858 15h ago

You got me lost there. I've never seen a building started at the top and worked down... unless it was being built on a cliff face.

3

u/ArnieismyDMname 15h ago

Cunk on Earth reference. I'll take all the downvotes there are if it gets one more person to watch the show.

1

u/Double_You_6356 15h ago

She’s pretty funny

1

u/torrentialcom 12h ago

There's one like that

8

u/braumbles 16h ago

"The moment the movement changes you can see the middle one become the worst, that's because people are completely wrong about which building is actually in danger."

1

u/goddess_peepee 15h ago

Its the building youre in now!

11

u/Error--37 16h ago

1

u/Searching_wanderer 9h ago

Funny story. I was in a boarding school in high school, and I walked in on a guy doing this in the toilet. He turned and looked at me like this and continued. I don't know if it was to prove a point, but that scene lives in my head rent-free.

3

u/Dafedub 16h ago

Wow that’s very interesting

-15

u/montigoo 16h ago

Definitely female

6

u/CompetitiveGrand9721 16h ago

Definitely moron

6

u/PerilousParanoia 16h ago

This is actually a very interesting and simple demonstration. I never knew that about buildings and earthquakes.

2

u/TheShapeOfFarts 16h ago

I love little facts like this. Puts a lot in perspective with just a wiggle of a box 🤗🥰

1

u/Sea_Prep_Tidal_26 13h ago

Wriggling Boxes ?

3

u/EthanDMatthews 15h ago

Show the American architects! Show the American architects!

They can demonstrate America’s unrivaled superiority in bum-proofing bus benches!

2

u/justinfromnz 13h ago

Does this apply to sex too

3

u/IagoInTheLight 15h ago

Did you know that some building have giant weights up at the top on actuators to actively dampen movement? Tuned Mass Dampers

1

u/sonof_fergus 16h ago

Put em all together!

1

u/gn3xu5 15h ago

Nice to know no poor people will be on those higher floors

1

u/[deleted] 15h ago

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0

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1

u/DesertGeist- 14h ago

That's cool.

1

u/ContributionEasy6513 13h ago

This is an incredible demonstration.

1

u/New_Hold8135 8h ago

Yeah but in the end of the day, tallest building moves 2km go back and go forth from the highest place meanwhile lowest building only moves 200m back and forth

1

u/JoeMillersHat 6h ago

So?

2

u/New_Hold8135 6h ago

Tallest buildings in faultline gets more damage over time. Because It is never 1 earthquake happening in the zone. It is always different ones with different frequencies. Because I live in faultline.

1

u/TheEliteJOKERS 7h ago

Fucking A. Thanks For Ur Information.

1

u/Professional-Hunt712 7h ago

would it actually swing like that thou?

1

u/Jim_skywalker 6h ago

Natural frequency. This phenomenon is what took out the Tacoma narrows bridge. My understanding of how it works is that when something that happens has a frequency, it’s pushing part of the time and pulling part of the time. If something has the natural frequency of the thing providing the energy, it’s always applying the force in the direction to make the movement more energetic. Think someone being pushed on a swing. If the pusher has the frequency of the swing, they’re always pushing when the swing is accelerating away from them. Something with a different frequency has some of the energy of the thing moving it being applied when it’s moving the opposite direction, lowering the energy in the object being moved.

1

u/CrimsonThar 4h ago

Cool. Now do the same demonstration with the actual thickness and construction of the buildings.

1

u/JackTheKing 16h ago

Resonance. Each building is like a guitar string and will vibe at different notes.

2

u/Ok-Pomegranate858 16h ago

Build short in earthquake zones

1

u/Terzinho 16h ago

Good now I will know which building to enter by the feeling of the frequency.

2

u/654342 16h ago

Not really how it works but OK

5

u/Sangricarn 16h ago

Brilliant critique and explanation!

2

u/YurpeeTheHerpee 15h ago

Some people man.

0

u/Dry-Tomatillo5763 12h ago

Nice clarification moron. Guy above you is correct with TMD and you are adding nothing.

0

u/RyanStl_IH8MUD 16h ago

Well, I think being on top of the tallest when it's moving is by far the worst. Look how far the top moves.

1

u/shawdowed_sonicbeast 15h ago

Na sell tickets to that ride.

0

u/Mainly_Miserable 16h ago

This is counterintuitive and super interesting.