String Theory in Nutshell

String theory is one of the most fascinating theoretical frameworks in physics. It is an idea that proposes that physical reality is made up of tiny vibrating strings instead of subatomic particles. These strings behave like the basic units of matter, with their vibrations determining the properties of particles. One of the striking features of this theory is that it requires extra dimensions beyond our familiar four dimensions of space and time. Some forms of the theory propose that as many as 26 dimensions of spacetime exist.

However, these extra dimensions are believed to curl up and remain undetectable. String theory unites particle physics with gravity; hence, it's a candidate for the unified theory or the theory of everything. However, the proposed strings are so tiny that it's almost impossible to experiment with them and test the theory's validity. Hence, currently, there's no evidence in its favor.

[jessicaheger]

No. It does not say the universe is made of strings INSTEAD of subatomic particles; the idea is that subatomic particles are made of tiny strings on the Planck length scale.

[songswithcam]

i must be proof of string theory because i like to curl up and remain undetectable

[Clxxdii]

For those who still might have trouble understanding: let me explain it in simple terms.
We all know and have been taught since childhood that atoms make up everything. But, what are atoms made up of? Electrons, protons and neutrons. Electrons are basically energy. (Won’t go in detail) and protons and neutrons are made up of even smaller particles called quarks. But when we try to see them, we are not able to. To see anything, we need light. Which is basically a wave. In such small particles, the wave simply passes through them. Now, why can’t we see them by increasing the waves? That will simply push the particles aside. So, to understand it properly, we replace these particles with something more complex. A string. These strings vibrate and different vibrations tells us about the different particles it makes up. This is not proved as the strings are again, hard to see. However this is really fascinating as it can tell us so much about gravity, etc and our universe. The mathematical questions in string theory say that there are 10-11 dimensions or more.String theory cannot be proven in our dimension. It is much more complicated than this, though. Hope this helps:)

[GururajBN]

The problem with the string theory is that it is unproven. It has remained stagnant for at least four decades. Not likely to be proved experimentally.

[rurappals]

The coolest part about this theory is that if they exist, we could bend them in such ways that we could travel between space and time. A homemade wormhole.

[josephpowelliii]

I sure am glad you explained this....lol. I still don't get it!!!😂

[nargacugalover]

"bUt wHaT aRE tHE STRIngS MAde Out oF?"

[Boblw]

Try reading The Elegant Universe by the world’s leading proponent of this theory, Brian Greene.

[robertlobianco]

My goodness. As Arthur C. Clarke said some time ago, the universe is not only stranger than you imagine, it is stranger than you CAN imagine.

[rubayaafzal]

The shortest and most easiest explanation I've ever heard about this.

[timeno]

Even the ancients had some idea ...

'There is geometry in the humming of a string.
There is music in the spacing of the spheres.'
- Pythagoras, ~5th Cen. BC

[suspicioussand]

The video: "...theory of everything..."
My brain ASAP: *Geometry Dash*

[DonJohnSpain]

Edward Witten is considered to be the most intelligent man on earth, by far. When he was asked about the size of a string, he said that a string compared to an atom it like an atom compared to the universe.

Quantum physicists never claimed there are 26 dimensions. One group calculates with 10 dimensions, another group with 11 dimensions. This 26 dimensions is made up by you.

Every string in universe is interlocked with other strings. They are literally everywhere, also in the vacuum of universe.Informationt is passed on in realtime about the spin of tiny particles which is by default counterclockwise. Quantum physics has no T (time) nor space. Everything is happening at the same moment, past, present, future, in other dimensions. When there's no T, there's no past nor future.

[randolphhobson]

now I know how my kids dixi cup phones work

[camiryat]

ive literally struggled so hard to understand string theory so thank you for this

[Pork-Chopper]

The G string theory always gets me excited... 😋

[infinitumneo]

The reason there's no evidence supporting string theory is because we have an incomplete understanding to unify all the physics underlying the five different forms of string theory.

[dgrando]

E=mc² was a theory until it was tested.. when they figure out how to generate gravitational waves they'll crack it

[pedromoura]

The "strings" cannot be experimented on yet because they dont exist in a timely manner.
The theory goes like this:
You have a single point of space (a pixel)
A point has zero dimensions therefore it's existence cannot be proven or disproven as it doesnt essencially exist nor be interacted with because it has no properties other than existing.
However If you vibrate that point up and down (up and down being relative to the viewer in this example) along an axis you have now 1 dimension (a line) whose existence CAN be proven as it now has a property.
A 2nd and a 3rd dimensions can be obtained by making said point vibrate back and forth and left to right instead of just up and down.
For that point to go from one place to the other it took time and that's your 4th dimension being now a string (imagine a small point going around an axis moving in space and leaving a trail)
a 5th and a 6th dimensions can be obtained from moving away or close enough until the same properties can be observed to work again (ie. Universes working on the same laws as pixels or pixels under the same as universes) and in between there can be others if you consider the macro molecular level as working differently than the quantum level, the planetary level as working differently than those 2, the galactic level were Black holes exist...
This theory is unlikely to stop being one because for dimensions to exist as separate would have to be proven as incompatible with the others and that cannot be done until you prove theres one point by which laws start repeating themselves (which so far hasnt been the case), we also cant prove the existence of the pixel so even if this ends up proven true a billion years from now it's irrelevant right now and the quantum foam theory seems to be much more predictable as a working basis.

[ishanc]

I'll have you know, it's true. I now have the power of 'Strand'.