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/sci/ - Science & Math

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1040471 No.1040471 [Reply] [Original]

problem solved?

>> No.1040475

no.

>> No.1040474

Yes.

>> No.1040479
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1040479

>> No.1040478
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1040478

>> No.1040488

Maybe.

>> No.1040494

doesn't work, you can't transfer kinetic energy over that distance faster than light.

>> No.1040509

my head is full of fuck.jpg

>> No.1040514

>>1040471
but it looks like it will work =/

>> No.1040525

Go get your Nobel prize, OP.

>> No.1040544

what if you had a thin slip of string a lightyear long connected to a spaceship and then turned on the thrusters while the string was being held by someone/something very tightly?

would you go flying off into space a year later?

>> No.1040548
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1040548

>>1040544

>> No.1040561

>>1040494
why?

>> No.1040562

>>1040544
more than a year, it doesn't transfer at the speed of light

>> No.1040576

>>1040471
assuming an infinitely rigid rod, yes

Silly physicist, lrn2 real world.

>> No.1040582

>>1040471

but if im holding a piece of string on earth, and some guy in a spaceship 1 light year away had the other end, and the string was tight...he would move and i would instantly feel it.

faggots

>> No.1040583

>>1040544
It would take a lot longer than a year, and you'd probably get sick of holding the string

>> No.1040603

>>1040582
assuming an infinitely rigid string, yes

Silly physicist, lrn2 real world.

>> No.1040614

>>1040471
>>1040603

suck me off

>> No.1040618
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1040618

>>1040603
u mad?

>> No.1040627

>>1040471

how many km's in a lightyear? 0.o

>> No.1040633

You compress the rod and the "push" travels through it as a wave.

>> No.1040643

>>1040471
>>1040633

k, prove

>> No.1040647

>>1040627
>google "kilometers in a lightyear"
>1 lightyear = 9.4605284 × 10^12 kilometers

>> No.1040653

I'm not giving non-answers to your hypothetical non-questions.

>> No.1040658

E=mc2

so no.

>> No.1040661

>>1040643
learn physics

>> No.1040662

that wont work, the force that is caused by the pull or push of the rod will take a long time before it reachs the other end of the rod.

basically the whole rod dosnt move instantaniousley all together

>> No.1040672

>>1040662
>>1040471

but in theory...

>> No.1040678

>>1040662
i agree with you in theory, but you're missing out on some importamt theories

>> No.1040679
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1040679

No, that is absolutely useless.
The inertia in that thing would be overwhelming.
Let alone that it would be impossible to get any leverage on it.

>> No.1040682

ITT an interesting hypothetical question is overwhelmed by the practical considerations that make it useless.

>> No.1040686

infinitely rigid materials do not exist

/thread

>> No.1040690

>>1040678
>>1040471

L2spell&science faggot.
its \inportant\
and understanding of which theories is lacking?

>> No.1040693

compression waves

>> No.1040694

>>1040686
not with that attitude

>> No.1040702

>>1040471
>>1040679

you would need some sort of machine capable of moving the rod. it would require alot of energy, and an infinetly rigid object, but it is possible.

>> No.1040705

It would require infinite energy to move it, so it's a no.

>> No.1040706

>>1040693
>>1040693
>>1040693
>>1040693
>>1040693
>>1040693

>> No.1040742

information would only be transmitted in the steel rod at the speed of sound in steel. it's not instantaneous.

>> No.1040755

>>1040742
it's about moving the rod through space, not send signals down the rod

>> No.1040780

>>1040705
not infinite... just a lot

>> No.1040801

>>1040755
same shit.

see >>1040693

>> No.1040800

>>1040471
>>1040471

or maybe quantum entanglement?

>> No.1040812

>>1040755

that's what I mean by "information." the atoms have to bump into the atoms adjacent, and then those bump into the next and so on. this travels at the speed of sound in the material.

>> No.1040814

>>1040755
We know.

The pressure wave generated by whatever is pushing the steel rod travels at the speed of sound in steel.

>> No.1040823
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1040823

>A steel rod Five light years in length

>> No.1040836
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1040836

>> No.1040896

Light is the fastest "thing" we're aware of.

By all rights black holes are faster, because they suck light in. Otherwise light could escape. But because they're phenomina, they aren't considered. They could also be fucking stealth ships for all we know or super huge objects with dense gravity blocking the fucking light and bending light around its magnetic field to appear like a god damn hole in space.

But to pull away from that. If it won't break, could be moved. Yes it is travelling at the speed of how fast it is being pushed/pulled. The object exists, it is not a force traveling at the speed of light. It exists in that space it is being moved already.

Like the earth moving at it's own speed, light travel cannot compare to it's speed from opposite ends of the planet in the direction it's moving. It is faster than light travel by just existing with the same method in OP's pic.

It exists in that space. Therefore, there is no travel faster than it is actually moving.

>> No.1041020

Assuming a <span class="math">\frac{1}{16}[/spoiler] inch diameter and a density of <span class="math">7.75 \frac{g}{cm^3}[/spoiler] the steel rod would have a mass of 766,988,859,962,032,729 grams.

>> No.1041045

waves, etc.

not possible

>> No.1041060

rigid bodies are a fallacy used to simplify calculations. they don't actually exist.

>> No.1041087

>>1041020
FUCK YEAH 766 Petagrams.

>> No.1041102

if you pull the beam of steel away from the place 5 lightyears away what would happen

>> No.1041141

>>1041102
The force from the pull would propagate at the speed of sound in the steel.

>> No.1041144
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1041144

>>1040471
> fix'd

>> No.1041203
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1041203

>>1041087

767. Round up Eurofag.