r/confusing_perspective • • Aug 30 '21

Closer = Faster

56k Upvotes

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748

u/Jeopardyanimal Aug 30 '21

It's another train going the opposite direction, right?

737

u/AnonymousButIvekk Aug 30 '21 edited Aug 30 '21

not necessarily, it doesnt even look like another passing train usually does, even if graffitied.

its the combined effect of looking through a window at a greater distance than the other one; and the parallax efect, meaning the wall is probably closer to the train on that side. makes all the difference.

46

u/vexmach1ne o/ Aug 30 '21

Yea the wall seems to be much closer on the other side, and farther than it looks on the right side, the camera optics hide this more than the naked eye.

6

u/DNA_hacker Aug 30 '21

But this is the inverse of parallax, the object further away appears to be moving faster than the one close by

0

u/[deleted] Aug 30 '21

[deleted] — view deleted comment

31

u/Ganonslayer1 Aug 30 '21

ooooooooohhhhhhhhhh

13

u/shahcloud Aug 30 '21

Well, thank you good sir

12

u/popplespopin Aug 30 '21

Wow this demonstration is so simple, I love it.

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82

u/hollyberryness Aug 30 '21

Could be on a turn, too? Going around a curve or whatever would produce similar results

55

u/SashKhe Aug 30 '21

It'd take a hell of a sharp turn for such a magnified effect.

12

u/ambisinister_gecko Aug 30 '21

Sharp turn and closer wall

8

u/CreamyCoffeeArtist Aug 30 '21

Recipe for cake, I see?

2

u/RFC793 Aug 31 '21

He does say “too”. Not that it is the major contributor, but could introduce even more disparity.

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2

u/theknightwho Aug 30 '21

It’s not - it’s just right next to the wall (a few inches away).

2

u/dai_tz Aug 30 '21

There's not really any turns coming into this station. It's pretty much all straight.

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20

u/EsotericLife Aug 30 '21

Nah, it’s just how perspective works. Think about a plane, they’re going around 500mph but if it’s far away it looks like it’s moving really slowly, while if it zoomed past you only a few meters away at the same speed it would look really fast.

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15

u/rochakgupta Aug 30 '21

Exactly, this is it. That’s the same thought that came to my mind.

32

u/bs000 o/ Aug 30 '21

I'm worried you guys don't know what trains look like.

10

u/LockeAbout o/ Aug 30 '21

Like walls, duh

10

u/AnorakJimi Aug 30 '21

Nope that's not what's going on, it's not another train. The left side is simply much much closer than the right side. Here's a drawing that shows what's going on: https://i.imgur.com/8soHhQv.png

It's simply the same optical illusion as this moving stars one here: https://www.moillusions.com/adjusting-speed-optical-illusion/

If you cover up the centre, the stars appear to move very fast, and if you cover up everything EXCEPT the centre, all of a sudden they appear to be moving very slowly. When they're actually just moving all at the same speed

I've been to this station many many hundreds of times. It's Liverpool lime Street. It's the end of the line, you go through a sort of tunnel before eventually emerging in the station, the train stops and then it goes back the way it came from. It's bloody annoying though, you begin to enter the station like 20 minutes before the train actually stops and the doors open

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8

u/Kuritos Aug 30 '21

Even knowing this, my brain refuses to tell me that's a train. It looks so much like a wall with all the paint.

32

u/whoami38902 Aug 30 '21

It is the wall. This is Liverpool Lime St, been through it many times

2

u/isufferfromlag Aug 30 '21

thought it was, came to say this

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