Why Do Mirrors Flip Left & Right (but not up & down)?

Why Do Mirrors Flip Left & Right (but not up & down)?



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This video is about why words flip left & right (aka horizontally) in a mirror but not up & down (aka vertically). The answer has to do with specular reflection, mirrors being like windows into another world (alternate universes, just with in and out flipped!), and transparency of the things we write on.

REFERENCES
Specular Reflection

PhysicsGirl video about mirrors

Fermat’s principle

Thomas-Fermi screening

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H4C YOSA
Guest
H4C YOSA

Please give indonesian leanguage 🙁

Dozfis ._.
Guest
Dozfis ._.

What about a curved mirror, that flips images right

I'M POSSIBLE
Guest
I'M POSSIBLE

If mirrors flipped upside down then i would press the dislike button!

Nicholas Solly
Guest
Nicholas Solly

This was one of the questions I had at my Oxford Uni interview for undergrad Physics. Thanks for bringing it back to mind all these years later. 🙂

danmar007
Guest
danmar007

Mirrors don't flip. They show exactly what they see. The mystery I'm trying to solve is why people are confused about mirrors.

yes no
Guest
yes no

ok i was good until he pulled out 4 mirrors

Vaibhav Singh
Guest
Vaibhav Singh

Wow! Never thought about it this deep.

Awang Budiman
Guest
Awang Budiman

Time to use some of the questions in this video to mindfuck some people. Thanks!

Cross Box101
Guest
Cross Box101

How about placing the mirror above or below the image

Akash Singh
Guest
Akash Singh

If you were unaware of this phenomenon than I am sorry for you. You don't even have basic common sense

sherbet_lemonhead
Guest
sherbet_lemonhead

my brain has flipped watching this

Tristan Wibberley
Guest
Tristan Wibberley

Mirrors flip back to front, not left to right. You have learned to perceive opposition as a rotation around a vertical axis which flips both front to back and left to right. When you subtract your expectation from reality you find the difference is a left-to-right flip. But that was made up by you and was not a part of reality.

Youtube User
Guest
Youtube User

Is this true for lenses as well?

Statiscube
Guest
Statiscube

Comment section
98% Reflection jokes.
2% Normal comments.

I don't think these statistics are accurate. Perhaps I should reflect on them.

Maggie Alma
Guest
Maggie Alma

HES LITERALLY ADORABLE

Elastiq
Guest
Elastiq

This is the difference between y and x axis.

No one
Guest
No one

Mirrors are just a door that says no you

An_Annoying_Cat
Guest
An_Annoying_Cat

I’ve always wondered this. Thank you.

Rodney Berrien
Guest
Rodney Berrien

This whole video is stupid it’s common sense 🤦🏾‍♂️

Bryan Vas
Guest
Bryan Vas

It was at that very moment of time in the universe, that we understood everything.

Victor Nascimento
Guest
Victor Nascimento

emosewa si sihT!

zippee playZ
Guest
zippee playZ

terrible explanation.

Carlo Inglese
Guest
Carlo Inglese

You didn't even answer the actual question. It's because our eyes are oriented horizontally, side by side. If they were stacked above each other on our foreheads, mirrors would invert top down, not side to side. It's our perception that is flawed, not the mirror, or physics. Derp.

Bayu Senoadi
Guest
Bayu Senoadi

What?

John Runyon
Guest
John Runyon

Because your face has eyes horizontally.

NickSheridanVids
Guest
NickSheridanVids

2020 and you're still blowing my mind in a way that makes me swear silently

Austin Gomez
Guest
Austin Gomez

😲wow

matthhias brown an onion chopping Ninja
Guest
matthhias brown an onion chopping Ninja

If white things are white because it reflects all light and mirrors are reflective because it reflects all light then why can't I see my reflection on my shirt

Amazingly Amazing!
Guest
Amazingly Amazing!

1:19 yOu mIsSeD iT

Wizard Sarraç
Guest
Wizard Sarraç

Aw man it’s the first time I’ve see you

darkdwarf007
Guest
darkdwarf007

i can't believe someone actually asked that question to himself and thought about it more than just a few seconds

Skelbit Mation
Guest
Skelbit Mation

Making a mirror look at another mirror is breaking
the 100th wall

Khai Quan-Nicholls
Guest
Khai Quan-Nicholls

This video made me aggressively spam the like button.

Seriously man I’ve spent so long trying to find out the answer to this. I watched a physics girl video, a vsauce video I think and ton more and YouTube decides to stop recommending me your videos (even though I’m subscribed, obviously) at just the wrong time.

Thank you.

Timothy Morrison
Guest
Timothy Morrison

What about lenses?

Harsh Vardhan
Guest
Harsh Vardhan

I am an Indian. I like to watch the contents of your videos. But sometimes I find difficult in understanding what you are speaking since yours English is fluent. So I humbly request you to add subtitles in your videos. Waiting for a positive response.

Nef2127
Guest
Nef2127

Thats the new best video Ive seen in my life!!!!

YtoSk
Guest
YtoSk

i already know this: they don't flip left and right. they flip the direction perpendicular to the mirror (front and back). if you look into a mirror, your right eye is on the right side of your mirrored face and the left eye is on the left side. your legs are down and your head is up. but the mirrored you is facing the opposite direction. long ago, we have discovered that when people people look in the opposite direction than us, their right side is on the left side from our perspective, because they are rotated 180°. a 180°… Read more »

Sabiki Kasukō
Guest
Sabiki Kasukō

People tried explaining it in videos of 5, 10 and 20 minutes and Minute Physics explained it in a minute using a mirror and a transparent card with the word "Word!" written on it.

KiLLJoY
Guest
KiLLJoY

Lol

Bananaman 9116
Guest
Bananaman 9116

Hey vsa…… nvm

AriyanGamein
Guest
AriyanGamein

I already knew this.

ItzKins #3704
Guest
ItzKins #3704

I have never thought of it flipping depth, geez. I'm glad I found this channel

NEWKNOWLEDGE
Guest
NEWKNOWLEDGE

I had no idea that every time I looked in the mirror, I had flipped my face, rather than the mirror do so, and I didn't feel a thing. LOL

Amri Multimedia
Guest
Amri Multimedia

I saw the title, and i thought, huh, i guess i know the answer, thats really silly question to ask for, after watch it, wow, i knew nothing about it, really great explanation

Vixen_82
Guest
Vixen_82

OMG! I have searched for the answer to this question for years! I needed a simple explanation for my simple brain. Thank you Soooooo much!

TheCrakp0t
Guest
TheCrakp0t

Imagine all the positive attention I'll get after explaining this word for word at a party

laksheya
Guest
laksheya

i love this video! never thought about lateral inversion this way.

minutephysics
Guest
minutephysics

I know lots of people have made videos about this before, but I felt I still had something to add, so, well, here you go! Also, I'm working on a video about CP violation (aka mirror symmetry violation) in particle physics, so I've been thinking more about mirrors recently. That video should be out soon!