how would this work? (681 hits)
Category: Science & EnvironmentalRating: -0.26 on 22 reviews (Rate this item) (V)
Submitted by ikes apt (View user info) at 2005-05-04 18:25:58 EDT
Okay, so everyone knows some basic Einstein space-time matter of relatively right?
So when someone goes in a spaceship at the speed of light, and they're gone for two years, and when they come back, like 50 years on Earth has gone by.
With me so far?
SO WHAT HAPPENS WHEN THE GUY IN SPACE IS TALKING TO MISSION CONTROL?
Since time is moving differently for both of them... can they speak to eachother? Or since sound moves slower than light, can they not communicate? Or if the sound were transmitted at the speed of light, so it was happening real time, would is sound like the astronaut was speaking really really slowly to mission control? And would it seem like mission control was speaking really really fast in space???
WTF.
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Submitted by funk_boy (user info) at 2005-05-06 10:16:42 EDT (#)
Ranking: 0
interesting link sofa..
I've always been of the opinion that there could well be a fundamental flaw in the way we perceive the universe.
Relativity is fascinating, but if correct it would mean no matter could ever reach the speed of light.
Submitted by Sofa_Ace (user info) at 2005-05-06 10:10:41 EDT (#)
Ranking: 2
http://www.cbsnews.com/stories/2002/08/07/tech/main517850.shtml
Submitted by funk_boy (user info) at 2005-05-06 10:09:59 EDT (#)
Ranking: -2
a spaceship travelling at the speed of light is useless
Submitted by Sofa_Ace (user info) at 2005-05-06 09:58:53 EDT (#)
Ranking: 2
Thanks for taking the time to explain it Zakalwe.
By the way, I recently read some thing where scientist measured light going faster than speed of light. The leading theory is that as the universe slows down, so does the speed of light. So light transmitted from billions of years ago is traveling faster than the current light. It seems the speed of light may not be "absolute" in the universe. Let me go to google and see if I can find a link.
Submitted by zakalwe (user info) at 2005-05-05 10:02:31 EDT (#)
Ranking: 0
sofa ace - you are wrong.
Submitted by zakalwe (user info) at 2005-05-05 10:01:22 EDT (#)
Ranking: 0
I hate it when scientifically illiterate people try to pose questions like this.
THE SPEED OF SOUND HAS NOTHING TO DO WITH IT. SPACESHIPS AND MISSION CONTROL COMMUNICATE VIA ELECTROMAGNETIC RADIATION, WHICH BY DEFINITION TRAVELS AT THE SPEED OF LIGHT (IN A VACUUM).
Also, it is clear you know next to nothing about either theory of relativity, apart from the bare bones of the so-called "twin paradox".
Submitted by Sofa_Ace (user info) at 2005-05-05 09:46:24 EDT (#)
Ranking: 1
Well, lets assume that this space ship is going the speed of light, then lets assume that they have the technology to make sound travel at the speed of light (or we could just say they use light to communicate? either way I guess, light just seems more probable), then lets say that space ship was orbiting the earth at the speed of light, and not traveling away from us (except that the space ship would gain infinite mass when it reached the speed of light), so that distance isn't a significant factor in the communication. I think (just a thought, I could very well be wrong) that because time is going slower for him and faster for us, the wavelength of his transmission would be much shorter, it would sound much faster and high pitch to us. Likewise, mission control's words would be low pitch and drawn out. Hmmmm, I wonder if light waves are used, if the wavelength would be changed enough to bring it out of the visible spectrum? He would have to transmit in a really low frequency, and we would have to transmit in a really high frequency. Unless, the wavelengths were changed so drastically that communication became impossible. However, I think transmission might be impossible for the space ship considering that it would have infinite energy, and any transmission would result in a loss of energy and bring the ship out of light speed.
Submitted by IkesApt (user info) at 2005-05-05 03:05:05 EDT (#)
Ranking: 0
ha well seems like this started up a little dialogue
Submitted by williamson (user info) at 2005-05-05 02:08:28 EDT (#)
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Submitted by ChronicMasturbator (user info) at 2005-05-04 21:50:09 (#)
Ranking: -2
Believe or not Williamson, 99.99999% does equal 100%, as does .9999999 equal to one. All you need to do, is use a geometric series with a common term of 9, and/or .9, with a ratio of 0.1, with a limit going to infinite.
Time travel can only be done in relatively short perspectives.
Williamson, this is how it works. Lets say there are twins. One goes on a space shuttle, and comes back 50 years later. The twin who did not travel observes that the other has gone for 50 years, wheras the other things 1 year has gone by.
Here is a small bit
The biggest time traveler so far is an astronaut named Sergey Evdeyev, who was on the Mir Space Station for a total of 748 days on three space flights. When he returned to earth he had aged about a 1/50 of a second less that if he stayed home. That is, when he returned to earth he found the Earth a 1/50 of a second to the future than what he expected it to be.
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I didn't mean 99.99999 repeating. I just meant 99.99999 full stop.
You realise that through Sergey's eyes he in fact is older than earth by that 1/50th of a second though? In his universe, he is older than us, not younger. The truth is in the observer, thus reality is constantly "splitting". From Sergi's view, he was stationary and the Earth orbited him for 748 days. Thus the earth (through his perspective) has not aged, while he has.
Unfortunately it's difficult to get your head around because the human mind has evolved to understand 3-D space and 1-D time. But there are other dimensions that space and even time can travel along. Just like two men can be in different spaces at the same time, those same men can be in two different times in the same space. To fully get your head around it is like explaining colour to a blind man.
Submitted by Sassmasterr (user info) at 2005-05-05 01:50:01 EDT (#)
Ranking: 0
No Comment
Submitted by ChronicMasturbator (user info) at 2005-05-04 21:50:09 EDT (#)
Ranking: -2
Believe or not Williamson, 99.99999% does equal 100%, as does .9999999 equal to one. All you need to do, is use a geometric series with a common term of 9, and/or .9, with a ratio of 0.1, with a limit going to infinite.
Time travel can only be done in relatively short perspectives.
Williamson, this is how it works. Lets say there are twins. One goes on a space shuttle, and comes back 50 years later. The twin who did not travel observes that the other has gone for 50 years, wheras the other things 1 year has gone by.
Here is a small bit
The biggest time traveler so far is an astronaut named Sergey Evdeyev, who was on the Mir Space Station for a total of 748 days on three space flights. When he returned to earth he had aged about a 1/50 of a second less that if he stayed home. That is, when he returned to earth he found the Earth a 1/50 of a second to the future than what he expected it to be.
Submitted by williamson (user info) at 2005-05-04 19:11:25 EDT (#)
Ranking: 0
Submitted by IkesApt (user info) at 2005-05-04 18:59:33 (#)
Ranking: 0
nope no test just finished all my finals.
im 20 at u of toronto studying international relations
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Your HS finals?
In the future be careful when you ask a physics question. Nobody can go at the speed of light so make sure you say "practically" before it. In physics and maths there's a big big difference between 99% and 100. Just a heads up so you don't get flamed in the future.
Also, I'd like to know if other Uberers agree with my theory. I've only done a couple years of physics at high school and I only got a High Achievement (ie B) but only because I suck at electrical engineering which was a big part of the curriculum.
Submitted by charles (user info) at 2005-05-04 19:04:54 EDT (#)
Ranking: -1
Fuck Knows
Submitted by IkesApt (user info) at 2005-05-04 18:59:33 EDT (#)
Ranking: 0
nope no test just finished all my finals.
im 20 at u of toronto studying international relations.
Submitted by williamson (user info) at 2005-05-04 18:58:25 EDT (#)
Ranking: 0
Submitted by IkesApt (user info) at 2005-05-04 18:37:21 (#)
Ranking: 0
But what if they made a new communication technology so that they could talk to each other in real time? WHAT THEN???
Why my age?
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Well, if they made some type of technology that allowed the sound to wormhole instantly (ie. faster than the speed of light), my educated guess is that each person's voice would appear extremely fast to the other as a result of time distortion.
To Ground Control, 50 days is only 1 day on the ship and to the ship, 50 days is only 1 day at ground control. Both are correct, it just depends on who's perspective you take.
Your age because I'm wondering if you're a kid with a physics test or someone much older trying, only now, to understand physics.
Submitted by IkesApt (user info) at 2005-05-04 18:47:11 EDT (#)
Ranking: 0
way to understand the question, stupid shit [masturbator]
ill take your word for it yermom.
Submitted by ChronicMasturbator (user info) at 2005-05-04 18:44:52 EDT (#)
Ranking: -2
good going dumbass, there is no ship that goes at the speed of light.
And yes, NASA has already noticed that when people go to space, during the launch, they are "ahead" in time about a couple of milliseconds.
Submitted by yermom (user info) at 2005-05-04 18:44:04 EDT (#)
Ranking: 0
Thier communications, even if moving at the speed of light would still be delayed by the extra distance they would have traveled, assuming that the technology for transmission would be the same on both ends, it would be like a normal communication with latency based on the distance at the speed of light.
Submitted by IkesApt (user info) at 2005-05-04 18:37:21 EDT (#)
Ranking: 0
But what if they made a new communication technology so that they could talk to each other in real time? WHAT THEN???
Why my age?
Submitted by williamson (user info) at 2005-05-04 18:34:29 EDT (#)
Ranking: 0
His messages wouldn't reach ground control for a long long time, possibly after he got back.
By the way, how old are you?
Submitted by Yes (user info) at 2005-05-04 18:32:50 EDT (#)
Ranking: 0
no
Submitted by IkesApt (user info) at 2005-05-04 18:26:28 EDT (#)
Ranking: 0
YAY EXAMS ARE OVER
TIME TO SMOKE MORE SHLABA-SHLAB