# Spacetime and relativity - something I don't get.

really, two somethings that relate to each other,

1. time dilation. according to wiki the amount of time a a round trip will take relative to the observer is t = 2d / v where t=time, d=distance, and v=velocity. the part I don't get - v = d/t right? seems like a circular definition to me

2. flowing from time dilation - if you move at the speed of light time stops... this implies to me that if your velocity was the speed of light then it would take absolutely no time to move from one point in space to the next. if you are not moving through time at the speed of light then velocity would equal distance divided by zero... and nothing can go into anything infinitely, therefore your velocity is infinite.

this is seriously fucking with my head, could someone explain this to me? and please don't go too terribly crazy with the math. I can take some stuff, but not a 5 inch string of numbers mixed with symbols I don't know the meaning of (I didn't take anything but algebra 1 so I don't know a lot of stuff. I could understand it but I hate pointless repetition of formulas so I hated math class, so I didn't go advanced with it, but I do like math.)

anyways, some explanation or a link would be cool, as well as any discussion, including the miracle of magnets.
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dude...wat?

did you just make this thread to make us think you're smart or something?
My massive mind power has deducted that this thread is now in fact. Useless.
People in the pit take my post way too seriously.

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Congratulations. You have just discovered why travel at the speed of light is impossible.
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*reported*

It really isn't that hard. Do your homework by yourself.
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Holy crap, check this out!
A thread JUST like this was just on /b/ you sly dog

EDIT: ^ Everyone hates you
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A thread JUST like this was just on /b/ you sly dog

That implicates you as a b tard as well.
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Everyone hates you

No, that's just you. Everyone including yourself apparently.
Marshall amplifiers are the truest purveyors of rock and roll known to man.

"And give a man an amplifier and a synthesizer, and he doesn't become whoever, you know. He doesn't become us."

Holy crap, check this out!
If you want to learn about time dilation, look up special realativity first, Lorentz transforms (for observers moving along a same axis). And you can't travel at the speed of light, that's the problem.
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*reported*

It really isn't that hard. Do your homework by yourself.

He never once mentioned homework. And if it's "not so hard," care to explain to him what he asked?
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That implicates you as a b tard as well.

Oh, god forbid someone go on 4chan...

Peace dude, it was nice talking to you
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really, two somethings that relate to each other,

1. time dilation. according to wiki the amount of time a a round trip will take relative to the observer is t = 2d / v where t=time, d=distance, and v=velocity. the part I don't get - v = d/t right? seems like a circular definition to me

2. flowing from time dilation - if you move at the speed of light time stops... this implies to me that if your velocity was the speed of light then it would take absolutely no time to move from one point in space to the next. if you are not moving through time at the speed of light then velocity would equal distance divided by zero... and nothing can go into anything infinitely, therefore your velocity is infinite.

this is seriously ******g with my head, could someone explain this to me? and please don't go too terribly crazy with the math. I can take some stuff, but not a 5 inch string of numbers mixed with symbols I don't know the meaning of (I didn't take anything but algebra 1 so I don't know a lot of stuff. I could understand it but I hate pointless repetition of formulas so I hated math class, so I didn't go advanced with it, but I do like math.)

anyways, some explanation or a link would be cool, as well as any discussion, including the miracle of magnets.

First thing to realize, is that you can never travel at the speed of light. It's impossible. You simply cannot do it - you can get close, but you won't hit light speed. Second, if you could get close to light speed, time would slow down for you. If you were moving at the speed of light, I don't think time absolutely stops. Look at how long it takes for light to travel from the sun to our planet.
im 12 and what is this
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That implicates you as a b tard as well.

No, that's just you. Everyone including yourself apparently.

I think you're a twat for stealing Dann Blood's avatar.
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I can fap to this. Keep going.
this is internet. take your physics elsewhere :P
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I think you're a twat for stealing Dann Blood's avatar.

They're the equivalent of hippies, with all these Dream Theater avatars.
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The truth is, Muslims never apologized for their faith having something to do with the attacks on 9/11.
Quote by damian_91
If you want to learn about time dilation, look up special realativity first, Lorentz transforms (for observers moving along a same axis). And you can't travel at the speed of light, that's the problem.

Travel at the speed of light is possible, the problem is that if an object has zero rest-mass (main problem) would require an infinite amount of energy to accelerate to that speed (secondary problem).

If you do believe in special relativity there are several string theories that postulate the ability to locate and ride particles already accelerated to the speed of light.

Unfortunately causality and absolute relativity must be abandoned to make this possible. If you're looking into dilation of time there are regions of space that are "warped" and believed to harbor faster than light particle actually moving forward in time, unlike tachyons.

HAPPY PHYSIC-ing or something lol
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We have a physics thread now

holy shit, since when?

also, no, it's not for homework, i just like to think about stuff like this.

if the speed of light is impossible, then how does light travel at that speed?
Ive been thinking about our ideas on space and time a lot lately. Isnt it kind of bold for us to say that nothing in the entire infinite universe can exceed the speed of light when we ourselves have never even been beyond our moon?
Quote by The4thHorsemen
holy shit, since when?

also, no, it's not for homework, i just like to think about stuff like this.

if the speed of light is impossible, then how does light travel at that speed?

It wears a helmet and takes the short bus.

Real answer is light isn't matter.
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You should be careful what you say. Some asshole will probably sig it.

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Yup, a girl went up to me in my fursuit one time.

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I can fap to this. Keep going.
Ok well ill take a whack at it. The faster something goes, the slower time passes.

If you are in a ship going Speed of Light then time outside of the ship will seem to go faster.

Even at substantially lower speeds than speed of light. The satellites that we use for gps actually fly fast enough that the clocks on them must be set differently.

Light itself still takes an incredibly long amount of time to travel through the universe. While traveling at light speed will make your perception of time outside of the ship faster over time you will still age.

Fly at the speed of light and come back to earth after a year of flying at the speed of light and time will have advanced on earth more than 2 years.
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He never once mentioned homework. And if it's "not so hard," care to explain to him what he asked?

I learned this over the course of Year 12 Physics at high school. To do so properly would take roughly 1 year.
Marshall amplifiers are the truest purveyors of rock and roll known to man.

"And give a man an amplifier and a synthesizer, and he doesn't become whoever, you know. He doesn't become us."

Holy crap, check this out!
Quote by seemeel
I learned this over the course of Year 12 Physics at high school. To do so properly would take roughly 1 year.

Okay, I get it.

6/10. You had me going for a while, but you didnt make me that mad. Trollharder next time