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| Does Physics Freak You Out?; It should! | |
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| Topic Started: Jul 5 2013, 01:15 PM (211 Views) | |
| Ravel's Heart | Jul 5 2013, 01:15 PM Post #1 |
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For a while in college, I got really into physics. It was fascinating and it still is. One thing that I never quite wrapped my mind around was the fact that time flows differently depending on gravity and velocity. I could sort of understand that a little, but I could never understand the way people said you could look back in time. This finally made it clear to me. Warning! Thinking about this will keep you up at night! But it is truly, truly fascinating. The most interesting part starts at 7:45 of the first part and goes until 5:32 of part 2, but the whole episode is both entertaining and provocative. It will challenge everything you know about time and what's "real". National Geographic Beyond the Cosmos Time Warp Part 1 National Geographic Beyond the Cosmos Time Warp Part 2 National Geographic Beyond the Cosmos Time Warp Part 3 |
| "What can change the nature of a man?" | |
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| Mr_Otyugh | Jul 5 2013, 01:26 PM Post #2 |
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Short explanation is: we see by light, light has maximum speed... enough distance and it's the past.
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| Ravel's Heart | Jul 5 2013, 01:47 PM Post #3 |
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No! No! No! That's what I always thought it meant. But that is not what it means at all. In the bread-slicing demonstration, he isn't saying that if you are ten million light years away you can "see" what happened ten million years ago. What he is saying is that what is occuring ten million light years away occurs at different times because of how the flow of time changes with velocity. Imagine two things: 1) You could be teleported 10 million light years away from earth, and 2) That you could "see" what was happening on earth without the limitation of the speed of light. In other words, as things happen you instantaneously see them. If you were motionless relative to me, you could see me typing on my keyboad right now. But if you started to walk away from me, some of your velocity in the space-time continuum would be translated from temporal travel through time at a 1:1 rate with me. You would start seeing my past. Because you are so far away, a very slight change in your space-time vector would give you a huge change on the time axis. Your "instant" would no longer include me typing on the keyboard. You would be living at a time 200 years in my past. But if you turned around and walked towards me, you would see into my future. My future would already have happened. This is simply incredible. |
| "What can change the nature of a man?" | |
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| Ceremorph | Jul 5 2013, 03:42 PM Post #4 |
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Dark Mistress of the Toolset
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So it's connected in part to the whole "travel at light speed, come back home, you've been gone for a year but everyone you left behind has aged 80 years" thing. I think the whole "time travels differently at different heights due to the effect of gravity" thing is awesome myself. http://www.dailymail.co.uk/sciencetech/art...r-altitude.html |
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We rode on the winds of the rising storm, We ran to the sounds of the thunder. We danced among the lightning bolts, and tore the world asunder. | |
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| Ravel's Heart | Jul 5 2013, 07:56 PM Post #5 |
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Yep. That gets mentioned in this show as well. Pretty weird. |
| "What can change the nature of a man?" | |
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| cryptc | Jul 6 2013, 08:48 AM Post #6 |
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Advisor
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Weirdest for me is still the double slit experiment: http://www.youtube.com/watch?v=DfPeprQ7oGc To me it makes me ponder if quantum particles actually dance around between different dimensions, averaging out to what energy level / position they have... so that when you observe one, you've locked the timeline so to speak, deciding where it was in this dimension (and possibly affecting its potential in other dimensions as well) Also would explain why quantum particles can pass through things, since they would leave our dimension and appear again after passing the obstruction... But yeah, I think the only thing we can know for certain about this is that we're like monkeys fiddling around inside a spaceship... we have no idea what we're doing |
| "One of the most curious statements I've seen on this list is that PlaneScape is a logical world. I must have erred. I was trying to create a world that defied logic." - David 'Zeb' Cook | |
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| Ravel's Heart | Jul 6 2013, 01:07 PM Post #7 |
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A brave little theory, and actually quite coherent for a system of five or seven dimensions--if only we lived in one. -- Academician Prokhor Zakharov, "Now We Are Alone" I loved that game! :lol: |
| "What can change the nature of a man?" | |
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12:30 AM Jul 11