If you left Earth to go to Mars and emitted a constant uninterupted signal from the time
you left Earths orbit till you reached Mars, knowing that it takes 20 minutes for a signal to reach back to Earth, Would you not in fact arrive 20 minutes before the end of singnal on Earth and in fact travel 20 minutes forward in time.
This stuff pops in my head sometimes.
That was one of those times.
The separation would put both you and your Earth-bound observers "twenty minutes in the future" from the point of view of each other.
You see, it's all relative. Everyone's at the bottom of their own time-well. Normally (over short distances) we simply don't see it.
I wrote something about it, once.
Thanks Albert. Never thought I would ever think like you.
so what would happen if say we travelled at 100 times the speed of light, popped over to the other side of our Galaxy for a long weekend and then returned for work the next day?
Would we actually come back to Earth two days on in time or will we have travelled forward a 100 years?
It's amzing to be talking with Darwin and Einstein at the same time this time travel thing is fun!
Need a return speed.
Return speed would be 100 times the speed of light also. Travel out Friday night home for Sunday dinner.
KPM, you can't go 100 times the speed of light. Infinite mass and energy are required to go a paltry 100 times slower than that. That speed is "ausschlieÃŸlich verboten", as I would say in Munich. But there is a (sort of) fix.
Darwin, it's time to understand how the universe is, and not how we tend to perceive it to be. You need to put on different shoes in a gedanke experiment, a bit like my old one I had on that Viennese tram all those years ago.
Are you happy with the idea (and the experimental data that proves) that time dilation and length contraction are a real effect of speed?
Once you are, then think on this: a ray of light travels at the speed of light. From the point of view of an observer on Earth, the light takes years to travel across the galaxy. It's a long way, after all.
But time dilation has kicked in: clocks stop at the speed of light. So we can say that the photon we receive is as old as it was when it was created.
The light from, say, Arcturus may have taken 36.7 years by Earth-clock to get to your eye, but the photons that make up that image are the same age as they were the instance they were created.
Now sit on that photon, created in the blazing photosphere of Arcturus. At the speed of light, the outside universe appears to stop. It doesn't "take" 36.7 years to make the trip from the star to a human eye. Time dilation makes the universe have no length. So it takes no time at all. The effect is one of instantaneous travel.
KPM, you can travel to the farside of the galaxy within a moment of time on a Friday afternoon, have a great weekend, and return similarly quickly on Sunday night. But!!!
You haven't stopped Earth's clocks. It'll be around 202007 AD, Earth time, when you get back. Sunday dinner will be all-but fossilized.
Meanwhile - and hold onto your seat - now think of the universe as filled with light, moving from here to there, from the furthest depths of the Big Bang to our microwave receivers, from that monitor screen to your eyes. The entire universe is criss-crossed with light, innumerable near-infinite chunks of information, packets of "data". And from the point of view of this web? ALL light is moving infinitely fast across a universe of no size, and getting "there" instantly.
The universe, from the speed of light's point of view, is a single, momentary instant in time. It is the big bang, the "now" and the eventual heat death all at the same moment. All those stars and galaxies, vast distances and gulfs of vacuum have NO size, depth and dimensions. It is everything AND nothing. At the speed of light it simply
Wirklichkeit ist eine Illusion
I agree, all there is, is "Now," and the visible accumulations of "Nows"
But it does exist, we just dont know why.
Only two days would have gone by. An hour of "nows" is an hour of "nows".Should not matter about perspective. Should be realitive like you said.
We need a new word for, "now". I propose nowl. Let me know what you think.
Well I am off for the weekend now so speak now on Monday.
If nowl is universal, and I dont see how it could not be, then it can not move but only accumulate. The speed of light would be nothing more than the tranfer rate of radiation across some unknown medium.
Something to chew on from a Bio guy. Space is a fluid and planets are cells sucking in what they need, to quiet some prossess.
All connected in this one cosmic plasma. The universe its self is alive. It is all the same on what ever scale.
Earth is an unsettled place. The metabolic procces can be cruel to the goat when the mountain lion needs some protien.
No good and no evil, just chemical reactions. Living rocks.
Do, please, read - even skim - David Deutsch's book "The Fabric of Reality" and tell me whether life and freewill is, in your opinion, a truly real thing, or merely (as I believe) an illusion caused by quantum effects acting at the scale of chemical processes we'd call "living beings".
Hmmm...That illusion collapsing out of the illusion of the no-time, no-distance "universe" experienced at the speed of light. Now there's something to consider.
Do you know, if I'd not died in the "now" of 1955, and had witnessed the later growth of Eastern religious belief within Western culture, I'd have bought the ideas that:
There is no objective sense of freewill: only a belief we have it.
Our own deaths are inconsequential. Our existence in spacetime (our personal timelines) as rich a part of the universe's tapestry, whether seen from a "now" within the period of our own existence, or "now"s from those points before our births or after our deaths. It does not matter. Each and every one of us is the universe.
We should respect all.
I dont think I need to read it. Could there be any other logical conclusion. We are all conected and part of the living universe.
There cab only be one nowl, and time is a human invention to cope with an unknown reality.
Albert, we are the universe. I didnt need to read the book. I noticed it by walking around on Mars with a few friends.
"Free will," is the result of the thought process inspired by some need of the universe or, "us".
The Universe is God in an Earthgly sence. and we are part of, god the universe.
The lasy process is the thought process and god is the cap.
Should be , "The last process"
There would need to be a reation to the thought process. Good or bad. I believe the VT shooting were a result of a emotional gradient. Eguilibrium was not pleasant but has been reached. So much for free will.