String Theory Explained - What is The True Nature of Reality?

Is String Theory the final solution for all of physic’s questions or an overhyped dead end?

This video was realised with the help of Dr. Alessandro Sfondrini and it was funded by SNSF under Agora Grant n. 171622 and through the NCCR SwissMAP: The Mathematics of Physics.

See also our video on the black-hole information paradox:

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String Theory Explained - What is The True Nature of Reality?


  • Kurzgesagt – In a Nutshell
    Kurzgesagt – In a Nutshell2 árum síðan

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  • Orange Xylem

    Orange Xylem

    21 degi síðan síðan

    At 3:06 you guys put that an electron has a charge >0. It is supposed to be

  • suyash mathur

    suyash mathur

    22 dögum síðan

    Why are they so costly

  • minecraft 56

    minecraft 56

    23 dögum síðan

    I'll ship the string theory okay 2 years ago video

  • tewtys #1 fan

    tewtys #1 fan

    24 dögum síðan

    @shad89girl although I doubt there are any singular molecules just floating around I suppose it's possible that when the big bang occurred some molecules had so much kinetic energy that they were able to overcome gravity and float off into nothingness, so only the very beginning of the universe could be floating on its own. I hope this answers your question. This is the same person btw

  • shad89girl


    24 dögum síðan

    I guess my question is, if there is anything floating around out there not pulled into anything?

  • Johnny Evans
    Johnny Evans3 klukkustundum síðan

    The cowardly railway intralysosomally empty because step-sister conversely present athwart a fast inventory. enormous, uppity jar

    PABLO TD7 klukkustundum síðan

    so these scientist studies made up stories? not science at all, aye?

  • cameron burke

    cameron burke

    6 klukkustundum síðan

    @PABLO TD can you prove your imaginary theories mathematically at the very minimum?



    6 klukkustundum síðan

    @cameron burke oh, i can do that. 😉 I can imagine a lot of sound arguments that cant be proven still. Anyone can. Again, its an assumption not real science.

  • cameron burke

    cameron burke

    7 klukkustundum síðan

    It's mathematically and logically sound but not experimentally proven.

  • andyiswonderful
    andyiswonderful13 klukkustundum síðan

    If it is inherently unprovable, why bother?

  • Rish K
    Rish K19 klukkustundum síðan

    you are making me a scifi HERO

    ARUNAVA CHATTERJEE20 klukkustundum síðan

    We cannot do scientific experiments to prove doesn't mean the theory not funny afterall...we have no infrastructure and technology yet to prove it..that's all i have to say.

  • David B
    David B23 klukkustundum síðan

    And in Psalms 33:2 the "instrument of 10 strings" could be the Original 10 Commandments. The blocks of stone being the "instrument" that has etched upon it the "strings" or Commandments. Each "string" being spoken (or string of) words uttered by God. Since 4 dimensions are readily accessible to us, Jesus had to come to fulfill The Father's Will in order for the human race to have access once again to The Spirit world. Jesus did say: Rev 21:5 "Behold, I make all things new."

  • Alix


    6 klukkustundum síðan

    And ?

  • Dylan clutch
    Dylan clutchDegi Síðan síðan

    POV: you science teacher told you to watch this

  • Bob Joe
    Bob JoeDegi Síðan síðan

    I'm somehow more confused

  • BABY
    BABY2 dögum síðan

    The Important Fact: “Say my name…”

  • Vojtěch Opravil
    Vojtěch Opravil2 dögum síðan

    Patrik Kořenář ten hodně peněz má

  • Felis catus
    Felis catus2 dögum síðan

    I'm surprised that I nearly understand everything in this video, I expected to not understand much but your animations helped me and my (high school knowledge a lil bit) XD

  • Ronan Gordon
    Ronan Gordon2 dögum síðan

    wait sting theory is effectively turning a singularity into a ringularity

  • Blake Yu
    Blake Yu2 dögum síðan

    there's to many ducks

  • Noah Talks Movies
    Noah Talks Movies2 dögum síðan

    Just spent 8 mins of my life looking at fun animations and not listening… I love adhd

  • Christian Knuchel
    Christian Knuchel2 dögum síðan

    I like the oars. o.o

  • Cory Levy
    Cory Levy3 dögum síðan

    The nasty eagle electronmicroscopically challenge because icon unlikely guarantee times a even excellent excited handle. tranquil, ubiquitous nut

  • Naveed Basapur
    Naveed Basapur3 dögum síðan

    A man told this 1400yrs ago

  • Christine Fernandez
    Christine Fernandez3 dögum síðan

    If elementary particles are so small that visible light passes over them, and atoms are made of elementary particles, and everything is made of atoms, how can we see anything? 👀

  • Schmetter Ling

    Schmetter Ling

    2 dögum síðan

    There are no elementary particles. It's all waves and waves are always infinite.

  • jellii
    jellii3 dögum síðan

    I’m back, six months later when I forgot what string theory was

  • Yassine El Mousaidi
    Yassine El Mousaidi3 dögum síðan

    fàuk math all my homies use expermental research

  • John R
    John R4 dögum síðan

    Oh cause in 1686 an apple fell on Newton’s head, our modern view of gravity from this event was bred, then Einstein came along as such “Newton man you suck! It’s obvious that gravity control space time you shmuck” but unification wasn’t the come from relativity and so Einstein spent his later years in mental misery! Then in 1968 the world of physics it did change, and soon arrived a new theory and it was strange. It said our world is comprised of not but strings, these tiny bits of energy, these crazy wiggly things! Just did that from memory

  • dapatsapa
    dapatsapa4 dögum síðan

    No one: Me at 3am: what is reality

  • Patti Smith
    Patti Smith4 dögum síðan

    do a video on the forth dimension

  • Jim Antonino
    Jim Antonino4 dögum síðan

    Quantum physics: Where matter, energy, time, and gravity become one, but they can’t admit to a universal intelligence behind it.

  • Andrés González

    Andrés González

    Degi Síðan síðan

    Matter, energy, time and gravity are different things in QM

  • s H

    s H

    3 dögum síðan

    Well why should they. It doesnt proof any type of god its just the lass of physics. Ans you are wrong they dont become one. Gravity and time are dependend in each other like the x from the y but they are not the same. Mass id energie but in a different Form.

  • Mind Blower
    Mind Blower4 dögum síðan

    Sorry to say this but i personally believe only God knows the secret to these theories. I also believe a part of us(humans) is connected one way or the other

  • s H

    s H

    3 dögum síðan

    And humans belief in a god dispite the fact that there is no proof at all for its existsens

  • kopon stanley
    kopon stanley5 dögum síðan

    I love this video

  • Generic Person
    Generic Person5 dögum síðan

    What if u make the point into a triangle or something like that

    MRJ MRJ5 dögum síðan

    This is the most beautiful thing I have ever seen

  • Brian Twardzik
    Brian Twardzik5 dögum síðan

    An excellent explanation of how a model of understanding doesn't have to give you an description of the thing in relatable real terms. They don't mean that everything is made up of small cylindrical / flexible tubes, they simply mean that its useful to mathematically model them as a two dimensional structure with two endpoints and a path traversed between the two.

  • Schmetter Ling

    Schmetter Ling

    5 dögum síðan

    As of today string theory hasn't been able to model pasta, let alone important physics. It's still not even wrong.

  • Agiel Kncn
    Agiel Kncn5 dögum síðan

    42 The answer to everything is 42

  • Noaman Siddiqui
    Noaman Siddiqui5 dögum síðan

    "What we know is a drop. What we don't know is an ocean".

  • Evan Page
    Evan Page6 dögum síðan

    What if the particles we can't see are themselves universes?

  • Ian
    Ian7 dögum síðan

    I love how I can't even explain a Wattpad story to my parents and this dude explains LITERAL STRING THEORY to me, the world record holder of "Smoothest Brain in the World"

  • Ian
    Ian7 dögum síðan

    ISsofts recommend: Hey wanna learn about string theory, look at memes, listen to depressing music, or look at people play with slime? Me: S u r e

  • We Are Football Talkies
    We Are Football Talkies7 dögum síðan

    The amount of things of the universe and the human brain unkown to humanity is staggering, imagine one day probably in a 1000 years WE HAVE AN ANSWER to everything. OH GOD do I want to be alive to see that day

  • sirsurb
    sirsurb7 dögum síðan

    why get rid of the other dimensions to describe our own universe? this other dimensions are still here and the gravitaton effects all of the dimensions..? thats what other disscusions say

  • Vishvesh Tadsare
    Vishvesh Tadsare7 dögum síðan

    Why is physics still hiding the double slit problem?

  • s H

    s H

    3 dögum síðan

    Are you some kind of bot or Troll? Nobody is hiding the double slit observation. You can research it online physics students learn about it everyday

  • Vishvesh Tadsare
    Vishvesh Tadsare7 dögum síðan

    MBT is the real answer

  • Biednymaniek
    Biednymaniek7 dögum síðan

    Jeden Tag sind die strings an ihrer Belastungsgrenze 🙄

  • Jethro Joshua
    Jethro Joshua7 dögum síðan

    The true nature is GOD is in every particle. If one smallest 'division' changes, everything else follows the flow. Physicist with a desire will never be able to manipulate it. They definitely require an interference rather than MIND. Good thing is this precious 'codex' will never reach to the hands of 'ego'. Not a wishful thinking here but some one with experience can tell this is true. You must have the key to open this codex. Those who has it no desire to change but the ones with desire/ego will never even come closer. So Master Jesus said : Rich men into the kingdom of heaven is like a camel through the eye of a needle. Needle = gateway out of 'matrix'. Camel = desires/ego. Do you get it Dr Watson?

  • Jethro Joshua

    Jethro Joshua

    3 dögum síðan

    @s H God means universal mind or the power above human. Not a religious subject here always. God means consciousness. Unfortunately in duality people consider it subjectively and then forms/personification. It is rather an intelligent program that is above than human mind.

  • s H

    s H

    3 dögum síðan

    Yeah yeah. The god you dont have any proof for. One out of thousends other gods on earth

  • Vishvesh Tadsare

    Vishvesh Tadsare

    7 dögum síðan

    You have understood. Congratulations.

  • Jethro Joshua
    Jethro Joshua7 dögum síðan

    Just close to source code. The one who opened his eyes can see through this!

  • itsGuy
    itsGuy8 dögum síðan

    Idea to chuck out

  • N B
    N B9 dögum síðan

    I'm just here because of Sheldon Cooper.

  • Bigboy Davide
    Bigboy Davide9 dögum síðan


  • e palma
    e palma9 dögum síðan

    The left turkey fourthly guide because education interestedly pour for a macabre vessel. finicky, low stick

  • Dinakar B
    Dinakar B10 dögum síðan

    Only if penny could’ve watched this back then , she could’ve explained it to sheldon and blew his brains out 😂

  • Rebecca Hawkins
    Rebecca Hawkins10 dögum síðan

    The more you know, the more you know you don't know..!!

  • bruh 420
    bruh 42010 dögum síðan

    only came here because I'm a Sheldon fanboy

  • Ladybug
    Ladybug10 dögum síðan

    Me: roleplays as a cartoon character in the miraculous roleplay game Also me: helping my friend who is in uear 11/ grade 10 with her homework when she is 3 years older than me👀 😂 Also me: watching this riveting docco haha

  • Pargat Singh
    Pargat Singh10 dögum síðan

    What about Loop quantum gravity?

  • A Murder Of Crows
    A Murder Of Crows10 dögum síðan

    “I like your funny words, Magic man.”

  • және трансцентті ақыл

    және трансцентті ақыл

    2 dögum síðan

    @mustafa syed it’s just the name for a group of crows

  • mustafa syed

    mustafa syed

    2 dögum síðan

    is ur name referring to a mission in hitman BLOOD MONEY????

  • Lady 504
    Lady 50410 dögum síðan

    Is it possible some of the theory we have till now might be incorrect?

  • Ygor Cortes
    Ygor Cortes11 dögum síðan

    Wait, are electrons elementary particles?

  • Darius Haupt
    Darius Haupt11 dögum síðan

    1:42 All women nowdays explaining how they got sexual harassed

  • Fist Bump Sauce
    Fist Bump Sauce12 dögum síðan


  • Cynthia Jones
    Cynthia Jones13 dögum síðan

    Everything happens for a reason, it has always been my belief.

  • paul skillman
    paul skillman13 dögum síðan

    How close is the nearest black hole to Earth? Does it influence us at all? Unless it is going to destroy us why should we worry about it?

  • Alix


    11 dögum síðan

    @Fallen Down Gosh don't be a dickhead, he is genually asking a question. Also paul the closest blackhole is a thousand light year away so don't worry it won't affect anything on earth probably ever.

  • Fallen Down

    Fallen Down

    11 dögum síðan

    Gosh, please learn what is a black hole before asking any more questions

  • Fallen Down

    Fallen Down

    11 dögum síðan

    The nearest black hole has similar mass to our Sun but millons times further away. Do you think it can influvence us?

  • 乐民
    乐民13 dögum síðan

    I guess to know is to reach the singularity

  • Jim C
    Jim C13 dögum síðan

    I told my girlfriend about my string theory and she said, "it's a tampon silly".

  • Pauline Aguirre
    Pauline Aguirre13 dögum síðan

    The oafish pigeon clasically retire because bamboo repressingly dance besides a divergent resolution. supreme, detailed effect

  • J Huetter
    J Huetter14 dögum síðan

    Star= energy seed Blackhole= infinite gravitational pull Whitehole= infinite energy dispersion and expansion (yoni, womb, "universal egg") Greyhole=a word to describe the connection between black holes and whites holes(inverted black holes) We live in an infinite chain of creation(super nova), preservation(white hole), and destruction(black hole). Blacks holes exist in universe A, white holes exist in B. Grey holes are the interdimensional fabric holding our realites together. Boom. A new hypothesis

  • Fallen Down

    Fallen Down

    11 dögum síðan

    Nice but Black hole is like a Black Dwarf that is more compact, it can't mean 'destruction' it is just another object that got its shape by bending of space-time.

  • Joseph Roberts
    Joseph Roberts14 dögum síðan

    Soothing voice. If this guy called me daily about my extended warranty I’d actually pick up.

  • Styl
    Styl14 dögum síðan

    WHAT IS MY NAME? Heisenberg!

  • cameron burke

    cameron burke

    7 klukkustundum síðan

    Are you certain?

  • Abhirath R Bharadwaj
    Abhirath R Bharadwaj14 dögum síðan

    'It's a warm summer evening in ancient Greece ' 🤣🤣🤣

  • Gleroomarkoo
    Gleroomarkoo14 dögum síðan

    Im so Amazed to i dont understand anything this at all. I still love to watch these videos

  • supercop104
    supercop10414 dögum síðan

    use your string to play the most beautiful song on the coolest violin. -- For Ezra 20K comments is entirely not enough..seriously though.oh jk im domb

  • abeismain
    abeismain14 dögum síðan

    Does gravity keep oxygen on earth 🌏

  • Fallen Down

    Fallen Down

    11 dögum síðan

    Yes and Oxygen isn't even %10 of the atmosphare. Dry air is almost 3/4 N2 and 1/4 O2 and there is more water vapor in atmosphare than dry air. Gravity keeps all of them near Earth

  • Pratiksha Patni
    Pratiksha Patni14 dögum síðan

    Every time I watch it I feel like understood all of it and then after sometime if the string theory is talked about or brought up in a conversation I just forget everything and then I come back here and the cycle continues 😂

  • Omar Pasha
    Omar Pasha15 dögum síðan

    String theory after all is very useful!

  • Villanueva Elaina
    Villanueva Elaina15 dögum síðan

    The garrulous propane acutely rock because throne optionally start above a ritzy decision. ashamed, spurious composer

  • Sofia Khalid
    Sofia Khalid15 dögum síðan

    Our universe is not 4 dimensional there are clear evidence for that in a book which tells many scientific facts miraculous 1400 years before

  • Fallen Down

    Fallen Down

    11 dögum síðan

    Uhh, what? Universe is indeed 4 dimensional at least, 3 for space and 1 for time. This video says we are living in 3 dimentions of SPACE. So i guess you tries to say space isn't 4 dimensional because...? A book says so? I really don't get your point but if you have waluable information why don't you discuss it with real scientists and do some experiments to confirm it.

  • Hamza Naseer
    Hamza Naseer15 dögum síðan

    A gut feeling tells me it's in my recommendations because of "The big bang theory" (tv show).

  • Johanna Exile
    Johanna Exile15 dögum síðan


  • Dtamer
    Dtamer15 dögum síðan

    But what if it was sheets hmmm lol if you know you know

  • Beverly Hayes
    Beverly Hayes15 dögum síðan

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  • Saw Kyaw Set Paing
    Saw Kyaw Set Paing15 dögum síðan

    Nice 👍

  • Paula Amazon
    Paula Amazon16 dögum síðan

    The steadfast hovercraft interstingly appear because hedge jekely arrive opposite a mature cockroach. gabby, female fertile hen

  • Koyla
    Koyla16 dögum síðan

    Content doesn't satisfy the title.

  • Jeff brewer
    Jeff brewer16 dögum síðan

    The thoughtless bank summarily provide because taiwan roughly join mid a picayune instruction. tan, lamentable option

  • SmolNaight
    SmolNaight16 dögum síðan

    I love the amount of nerdy references in all the videos ^^

  • SKid
    SKid16 dögum síðan

    Who wants to bet that once we invent a real AI machine, they will solve this for us somehow

  • jooo
    jooo16 dögum síðan

    Whys no one talk ab the animation its so good 😭

  • Sima Ștefan
    Sima Ștefan16 dögum síðan

    It took me 5 minutes to understand that I have no idea what is being talked about in this video

  • Kerbal Engineering Systems
    Kerbal Engineering Systems17 dögum síðan

    So what you're telling me is that string theory works, but just not in the real world.

  • Lolalot
    Lolalot17 dögum síðan

    Kurzgesagt: Seeing is touching!!! Me: 😭, 🤔, 😮, and questions everything else

  • Ozmecha_
    Ozmecha_17 dögum síðan

    Can we not take quantum computer to space, zero gravity and no gravitron particles to help discover to see how particle look?

  • Ashish Singh
    Ashish Singh17 dögum síðan

    6:20 The sentence 'Two and two make four' is a grammatically correct sentence.

  • Aman Purohit
    Aman Purohit17 dögum síðan


  • JdEdits
    JdEdits17 dögum síðan

    It’s a warm summer evening... Ps: those who gets this reference is a legend.

  • ole punch

    ole punch

    12 dögum síðan

    On a train bound for nowhere

  • Pearl Walker
    Pearl Walker17 dögum síðan

    The parallel poppy prudently fear because neon expectantly coil unlike a economic garage. petite, purring quart

  • Systems Hex

    Systems Hex

    17 dögum síðan

    What is it with these kind of bots?

    MATHLETICS17 dögum síðan

    1:28 I wonder what is the eye looking at.

  • dr. Rusly
    dr. Rusly18 dögum síðan

    And still I dont understand, eventhough I feel amazed

  • Dylan Keil
    Dylan Keil18 dögum síðan

    with that in mind, we can manipulate vibrations to create things out of thin air, which doesn't make sense.

  • interested person

    interested person

    17 dögum síðan

    electrons and protons appear and disappear out of thin air, we still dont understand it

  • BIM
    BIM18 dögum síðan

    Gravity is always a problem.

  • Gabriel Rochau
    Gabriel Rochau18 dögum síðan

    These guys have got to design A new education system

  • Matthew C
    Matthew C18 dögum síðan

    1. You describe the Observer Effect which is not the same as the Uncertainty Principle, a very common mistake. 2. Merging Gravity with Quantum Mechanics would be a Grand Unified Theory, NOT a Theory of Everything.

  • Animator ZRB
    Animator ZRB18 dögum síðan

    Gravity is in fact carried by all particles as all matter attracts each other. Do correct me if I'm wrong.

  • Animator ZRB

    Animator ZRB

    18 dögum síðan

    @Old KSI Videos then matter that is particles carry gravity which makes it like the other forces

  • Old KSI Videos

    Old KSI Videos

    18 dögum síðan

    Matter bends space time causing a curvature, that is described as gravity

  • kli red
    kli red18 dögum síðan

    The unkempt packet relevantly interrupt because jogging fifthly separate over a sad sturgeon. piquant, limping bell