Science Thought Experiment #1 (Page 2)  Wireclub Admin: Also, you could in theory travel into the future simply by traveling very close to the speed of light. Now, traveling into the past would require the past to exist simultaneously with the present That is the biggest implication of time as a dimension. Future and Past have to exist simultaneously with the present. How could that be?  Entropy: When you travel faster than the speed of light, you move from this dimension to the next (or simply some other dimension). There are some particles that scientists believe are doing this... slowing down to just slower than the speed of light, and therefor simply "appear" out of nowhere in our dimension. They're called neutrinos and are seen by use of "dark observatories." It's a cool study. We are limited creatures because our thoughts are still 3 dimensional. Entropy: Hawking has the same problem with time as a dimension. He says if it were, then why can't we remember the future? I'll have to brush up on his resolve to that, if he has any.  veronica: i thought the faster the speed the greater the mass hence the light speed barrier you have to bring gravity in to the equation gravity is the key to time travell and its ability to bend and warp space were forgetting wormewholes here . Entropy: "i thought the faster the speed the greater the mass hence the light speed barrier you have to bring gravity in to the equation gravity is the key to time travell and its ability to bend and warp space were forgetting wormewholes here ." You're adding black holes into the equation which is unnecessary. Firstly, photons are massless... so as you can see, you dont have to increase something's mass to have it travel faster (in most cases, the opposite is true). Black holes have infinite mass because its gravitational field is so great that is pulls everything around it toward it (including light). Time travel doesn't have to depend on gravity. Wireclub Admin: Another issue would the lack of visitors from the future. If the future exist simultaneously to the present, future time being infinite and time travel being possible possible - there should be a lot of visitors around Entropy: There very well could be, we just wouldn't see them as visitors. We would've labeled them things in our own lives that make sense. As in the video... your finger pressed down onto the flat landers plane would appear like a circle to them, rather than a finger. Add things in higher dimensions traveling through our plane at the speed of light, and we wouldn't even notice their presence here.  nicholmikey: I also think you would end up in space, i mean the earth is going around the sun, going around the galaxy, going around a central black hole, going around the center of the universe...(I think) so we are probably travailing at a speed we can not imagine. I suppose simulated travel through personal stasis is the only solution. maybe you can store your biometric pattern (if that is the right term) in a computer and get reassembled in the future, like a star trek transporter with a time delay.  Karma: What a great thread. Here's what I posted on my blog about this last month: So, here's what has occurred to me today: Contrary to conventional wisdom, time is not a dimension. In fact, time does not, in itself, exist. "Time" is simply the name we give to one aspect of the ever-changing relationship between moving objects in the universe. If nothing moved, there would be no time. Hence, "time travel" is a meaningless concept and I will never be able to go back and avoid having danced in public that one time. Thank you, and good night. Wireclub Admin: Veronica: Indeed it does, but I personally don't subscribe to the multiverse theory Entropy: Regarding visitors - you could be right but I will call upon Occam's razor here. What is more likely: #1: Visitors are everywhere and they are either just incredibly good at staying undetected - or just incredibly hard to detect but still complex enough to be 'alive' -or- #2: No one ever came to visit because traveling back in time is impossible. Wireclub Admin: Ok, my case against time as a dimension: On all the three basic spatial dimensions every single distinct point is independent of all other points and they exist simultaneously and that is easy to understand and accept. Time is nothing like that, every instant in time is a sum of every instant that existed before it. Points in time are not independent like points in space. Points in time do not exist simultaneously. The present is a reflection of the past, the past is gone forever and the future does not exist yet. I personally have not seen any compelling evidence of time as a dimension yet. Sure, you can treat time as a dimension in many mathematical expressions of the world we live in but just because it is such a powerful and practical abstraction, it doesn't make it truth  cherryhuny_2105: i just really dont think that traveling into the future would be possible, only because it doesnt exist yet. say you were to go to a concert and you would think in an hour you would see yourself at the concert, but what if you got into a car accident, then your future would be different..
 Cash: This is quite simple. Get a Dolorean, create a Flux Capacitor, and steal some plutonium...Voila!! veronica: the flux capacitor only ran on rubbish in the future and by the way the delorians were made in the north of ireland Entropy: Don't mind Noah... he hasn't read a single word of this thread. Interesting though, that he'd just automatically assume you were wrong Rod Outbackjack: Einsein prophesised that if two objects were sent around the earth at the same speed and distance and met up at the same time that the time between them would be different because of the curvature of the earth. This was done with Atomic clocks a few years ago and the clocks were out by a few thousands of a second.This Docomentary was doing the rounds a few years ago and if right proves that time travel is possible. Any takers? Wireclub Admin: It proves that time traveling is possible if the destination is the future Closer to the speed of light you get, slower the time will pass for you. If you could move fast enough, you could 'skip' decades in just a few hours. I actually have no problems with that. It is the other way around that bothers me a lot! Wireclub Admin: The traveling twin doesn't stop aging, it just ages slower based on how fast he is traveling in relation to the speed of light. It isn't the speed itself that causes the time to slow down either, but the acceleration towards the speed of light and the deacceleration from it. On the twin paradox experiment however, one of the twins is traveling at speeds that approach the speed of light and that is why he ages slower. While we can only measure the speed of light in relative terms, don't forget that the speed of light itself is a constant - the universe simply doesn't care if we can measure it properly or not. So you can't say that the twin on earth is accelerating in relation to the traveling twin - that is not how it works | Science Chat Room 1 Person Chatting Similar Conversations |