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/sci/ - Science & Math

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5576822 No.5576822 [Reply] [Original]

Hey, can you guys help me with explains the 4th dimension and string theory.
Pic

>> No.5576828

>>5576822
wat. thats 3 completely different hings.

>> No.5576832

>>5576828
3?

>> No.5576839

>>5576832
>4th dimension
>string theory
>pic

>> No.5576848

>>5576839
Supposed to be pic unrelated.
But can you help explain one of these?

>> No.5576857

>>5576848
ok, what 4rth dimension? time or space?

>> No.5576862

you can't fully understand both through just words and logic.


gotta learn dem maths boyee

>> No.5576868

>>5576862
>math
i just want to do physics, so no math since i only want to know things that relate to reality.

>> No.5576871

>>5576857
Time.

>> No.5576875

>>5576862

this

>> No.5576876

>>5576868
but math is reality

>> No.5576877

>>5576868
>i just want to do physics
>so no math
whhhhhhhyyyyy

>> No.5576887

>>5576868
What? Do you understand you cant do physics without math? Are you fucking troll?

>> No.5576888

>>5576871
you know how a normal rotation keeps the distance between 2 points the same? and its given by sqrt(x^2 + y^2 + z^2). time has a opposite signature so the "distance", called interval, between 2 points are sqrt(x^2 + y^2 + z^2 - t^2). notice the minus sine. a rotation in space-time will keep this the same.

>> No.5576886
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5576886

Soooooo, no one is going to explain the 4th dimension of time to me.

>> No.5576896

>>5576886
Let me tell you little secret. But dont tell anyone, ok? If you count this c^2= a^2+b^2 you will be able go past in time. No jokes!

>> No.5576899

>>5576886
hai guys so I want to become good at weightlifting but I don't like sweating so tell me, how do I get better without exercising? anybody have any tips?

>> No.5576906

>>5576896
The Pythagorean theorem?

>> No.5576913

in string theory particles are thought to actually be little strings, the reason for this is:
a) trying to combine quantum gravity has problems related to the fact that interactions between particles happen at 1 point. making them strings would spread it out and prevent these problems.
b) the mass and spin of hadrons can be modeled as a spinning string (which turned out to be wrong after the quarks model was made, but the idea was developed and extended to other particles.).
c) quantizing classical mechanics gives quantum mechanics, quantizing QM gives QFT, and quantizing QFT (kind of) gives string theory

the strings have no mass and all the mass comes from the tension they have. they can vibrate and thus have diverent masses and spins and other properties. a problem was found where ST only works if you have 26 dimensions (or 10 if you include supper symmetry), so the idea was thought up that the other dimensions are curled up into some shape to small to experience. this curled up space c an be diverent shapes (such as a doughnut or sphere) and if there are holes in it the string can wrap around it to give new states. the properties of the particles are thus dependent on this shape.

>> No.5576916

>>5576899
Sure, try Creatine and an ECA stack (ephedrine, caffeine, aspirin). You'll build muscle just by breathing.

>> No.5576923

>>5576913
Tl;dr- everything is connected by little massless strings, they have mass when being "used"?

>> No.5576926

>>5576923
no, the strings are the everything, they can interact by combining and breaking apart (to form 2 particles).

>> No.5576955

>>5576926
So milk is an example of strings breaking and connecting?

>> No.5577032

>>5576955
If string theory is correct, yes.