[ 3 / biz / cgl / ck / diy / fa / ic / jp / lit / sci / vr / vt ] [ index / top / reports ] [ become a patron ] [ status ]
2023-11: Warosu is now out of extended maintenance.

/sci/ - Science & Math

View post   
File: 11 KB, 300x327, einstein_120863000.jpg [View same] [iqdb] [saucenao] [google]
3258589 No.3258589 [Reply] [Original]

guys
my brain just broke relativity for me
if i travel away from earth at relativistic speed, earth ppl ages much faster than i do

but who's is to say i'm moving away from the earth, it might just be as well be earth that's moving away from me at relativistic speed, hence i should age much faster than they are.

i dunno, someone please clear this out

>> No.3258598

Who accelerates?

>> No.3258603
File: 23 KB, 926x642, dilation.png [View same] [iqdb] [saucenao] [google]
3258603

>> No.3258608
File: 21 KB, 926x642, analog.png [View same] [iqdb] [saucenao] [google]
3258608

>> No.3258624

>>3258589
The Earth doesn't move away from you, lest it break its orbit from the sun. It is moving in a pretty uniform pattern (ellipse) and won't move away from you (considering it's always pulling you closer, regardless of your distance to it.

F=G(m1 x m2/D^2)

>> No.3258631

>>3258598
Further to this guy's point, it's not the position that matters but the force observed. Only one will accelerate and it is that body which will undergo time dilation.

Physics fags don't h8, I'm just putting it simply.

>> No.3258632

>>3258624
the earth was just used as an example, think of a lone piece of rock in the middle of nowhere

>> No.3258641

>>3258624
In your reference frame the earth is moving away from you. It doesn't break out of orbit from the sun because the sun is also moving.

>> No.3258659

ITT: People avoiding the heart of the question because they don't understand it.

From your perspective, the people of Earth age slower, because in your frame you are stationary and they are moving. From Earth's perspective, you are aging slower because you are moving and they are stationary. Both are equally valid and this symmetry does not break until one of the frames undergoes acceleration (e.g. you turn around to come back).

Look up the twin paradox for more.

>> No.3258660

>>3258631
>>3258598
thank you

>>3258608
>>3258603
didnt really understand graphs, mind explaining?

>> No.3258668

>>3258660
Think about how you'd answer "Did I age faster than the guy on earth?". You have to compare your age and your earth friend's age *at the same time*. But whose same time? If you do the comparison using your idea of the same time, the earth guy is younger. If you do the comparison using the earth's idea of the same time, you are younger.

>> No.3258686
File: 55 KB, 262x283, zounds.png [View same] [iqdb] [saucenao] [google]
3258686

>>3258589
Or you could be moving around the earth really quickly and turn back time...

>> No.3258718

>>3258598
This is all you need to think about.

>> No.3259176

yeah relativity's dope there op.

>> No.3259188

>>3258659

he has to accelerate in order to get up to relativistic speeds in the first place.