| Topic: |
Science > Physics |
| User: |
"nobody@nowhere" |
| Date: |
29 Mar 2005 01:15:14 PM |
| Object: |
Time Travel? |
Somebody please explain to me ( Joe Stupid ) how it is theoretically possible
to travel into the future.
Also, why is it theoretically impossible to travel into the past?
Thank you.
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| User: "Darkwing \Double Secret Disinformation Agent\ theducksmailATyahoo.com" |
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| Title: Re: Time Travel? |
29 Mar 2005 08:56:47 PM |
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<nobody@nowhere> wrote in message
news:d7b6e$4249a943$438c9145$431@ALLTEL.NET...
Somebody please explain to me ( Joe Stupid ) how it is theoretically
possible
to travel into the future.
Also, why is it theoretically impossible to travel into the past?
Actually you can travel in the past, all you have to do is go faster than
the speed of light.
Thank you.
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| User: "ring_theory" |
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| Title: Re: Time Travel? |
30 Mar 2005 12:34:33 AM |
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"Darkwing (Double Secret Disinformation Agent)" <theducksmail"AT"yahoo.com>
wrote in message news:Y76dnb1fnM6wiNffRVn-oA@giganews.com...
<nobody@nowhere> wrote in message
news:d7b6e$4249a943$438c9145$431@ALLTEL.NET...
Somebody please explain to me ( Joe Stupid ) how it is theoretically
possible
to travel into the future.
Also, why is it theoretically impossible to travel into the past?
Actually you can travel in the past, all you have to do is go faster than
the speed of light.
Thank you.
Bah! You yahoo's are goofy. The universal speed of time is faster than the
speed of light.
It's like comparing the speed of light to the speed of sound. Achieving the
speed of light is not going to change time however the device used to
achieve the speed of light will glow with a bright light and or give a light
show simular to northern lights. We observe a sonic boom with achieving the
speed of sound. What would make light so different?
Ring
"Advances are made by answering questions. Discoveries are made by
questioning answers." Bernard Haisch
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| User: "Sam Wormley" |
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| Title: Re: Time Travel? |
29 Mar 2005 09:11:50 PM |
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Darkwing (Double Secret Disinformation Agent) wrote:
Actually you can travel in the past, all you have to do is go faster than
the speed of light.
Not in this universe, bubba.
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| User: "Lefty" |
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| Title: Re: Time Travel? |
30 Mar 2005 12:05:19 AM |
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All you need to do is cut a slit in time today, and cut another slit in time
next week. You wil have a segment of time which is one week long. Then you
need to that segment back in front of yourself, and you can gain a whole
week.
Afterall - they are elsewhere using double slits in time these days - no ?
[not serious]
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| User: "Jan Panteltje" |
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| Title: Re: Time Travel? |
29 Mar 2005 01:38:49 PM |
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On a sunny day (Tue, 29 Mar 2005 19:15:14 GMT) it happened nobody@nowhere
wrote in <d7b6e$4249a943$438c9145$431@ALLTEL.NET>:
Somebody please explain to me ( Joe Stupid ) how it is theoretically possible
to travel into the future.
Traveling into the future is automatic.
Just watch your watch second hand and relax.
Also, why is it theoretically impossible to travel into the past?
Some theorist here think it is possible, so it depends on what theory.
There was this person, Einstein, who came up with the idea that if you
traveled away faster then light, and came back, time would have passed here
on earth faster then it would have for you (lookup twin paradox).
Nobody has done it that I know of, but many think GW Bush his brain is from
long ago times, when we were still with the apes, so perhaps ...
This makes me think of a new creationist theory (why), we were all created in
the past at the same time, and then traveled with different speeds until
we got here.
If you could move away from earth FTL and had a large (serious again)
telescope, you would see earth like it was long time ago.
But if you try to travel FTL here Sam and Uncle Al and a few others will
give you a ticket.
After reading about Prof. Lax today, I came to the conclusion that if you move
FTL you are moving towards being omnipresent.
This is a consequence of what the wrote.
Thank you.
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| User: "Uncle Al" |
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| Title: Re: Time Travel? |
29 Mar 2005 02:05:10 PM |
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nobody@nowhere wrote:
Somebody please explain to me ( Joe Stupid ) how it is theoretically possible
to travel into the future.
Wait a second. There you are. Kinda hard not to do it
Also, why is it theoretically impossible to travel into the past?
Violation of causality. The universe does not tolerate contradiction.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
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| User: "robert j. kolker" |
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| Title: Re: Time Travel? |
29 Mar 2005 03:49:56 PM |
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Uncle Al wrote:
Violation of causality. The universe does not tolerate contradiction.
The one-wayness of causality is supported by every emprical observation
ever made, but is it a priori necessary? Does a voilation of causality
necessarily produce a logical contradiction?
The only necessary a priori principle I am aware of is the law of
non-contradiction.
The conservation laws appear to be true (supported empirically) and
might even be happenstantially true, but are they true a priori?
Example: I have five dollars in my wallet, it so happens. Is that
necessarily the case? No. There have been times when I did not have five
dollars in my wallet.
Bob Kolker
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| User: "Schoenfeld" |
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| Title: Re: Time Travel? |
29 Mar 2005 05:01:22 PM |
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robert j. kolker wrote:
Uncle Al wrote:
Violation of causality. The universe does not tolerate
contradiction.
The one-wayness of causality is supported by every emprical
observation
ever made, but is it a priori necessary? Does a voilation of
causality
necessarily produce a logical contradiction?
Many worlds interpretation and many variants solve all causal paradoxes
when in the context of "time travel". You would not be really
travelling into the past, only into a cloned parallel universe that
matches your past except at the point at which you enter (since your
presence modifies the future).
The only necessary a priori principle I am aware of is the law of
non-contradiction.
The conservation laws appear to be true (supported empirically) and
might even be happenstantially true, but are they true a priori?
Example: I have five dollars in my wallet, it so happens. Is that
necessarily the case? No. There have been times when I did not have
five
dollars in my wallet.
Bob Kolker
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| User: "Schoenfeld" |
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| Title: Re: Time Travel? |
29 Mar 2005 04:59:16 PM |
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nobody@nowhere wrote:
Somebody please explain to me ( Joe Stupid ) how it is theoretically
possible
to travel into the future.
This is covered in special relativity (see time dialation).
Also, why is it theoretically impossible to travel into the past?
By definition, it is not possible to travel* into the past by mere fact
that your presence in the past means that it is different from the past
you were taugh. For example, going back to Ancient Egypt and observing
the pyramids being constructed cannot be the same as the Ancient Egypt
you were taught in school as a child, since the history which you were
taught lacked your presence in those times.
With that in mind, the next best thing** is to displace yourself into a
parallel universe such that at the point where you enter you can say
"the history of this parallel universe is exactly the same as the one I
came from but the future is now indeterminably modified by my
presence".
*: you could go back into the real past so long as you did not carry
information from the future. For example, walking into a chamber and
walking out as a child with no memory as an adult could be classified
as true time-travel.
**: Assuming many-world interpretation or its variants are true.
Thank you.
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| User: "Sam Wormley" |
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| Title: Re: Time Travel? |
29 Mar 2005 03:11:45 PM |
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nobody@nowhere wrote:
Somebody please explain to me ( Joe Stupid ) how it is theoretically possible
to travel into the future.
Also, why is it theoretically impossible to travel into the past?
Thank you.
Perhaps your question is you want to travel into the future slower than
your friends.... live deeper in a gravity well. You live a sea level
and your friends can live in the mountains. Or get one of those American
Express cards without a limit to build and operate a fast rocket ship
and take an extended trip at relativistic speed. Watch out that your
ship doesn't hit an little grains of this or that when your going so
fast.
You can't travel into the past, but you can look at it. Just look out.
Moon 1+ seconds
Sun 8 minutes
Andromeda Galaxy 2.3 million years
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| User: "Jan Panteltje" |
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| Title: Re: Time Travel? |
30 Mar 2005 07:33:08 AM |
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On a sunny day (Tue, 29 Mar 2005 21:11:45 GMT) it happened Sam Wormley
<swormley1@mchsi.com> wrote in <kwj2e.114556$r55.90044@attbi_s52>:
nobody@nowhere wrote:
Somebody please explain to me ( Joe Stupid ) how it is theoretically possible
to travel into the future.
Also, why is it theoretically impossible to travel into the past?
Thank you.
Perhaps your question is you want to travel into the future slower than
your friends.... live deeper in a gravity well. You live a sea level
and your friends can live in the mountains. Or get one of those American
Express cards without a limit to build and operate a fast rocket ship
and take an extended trip at relativistic speed. Watch out that your
ship doesn't hit an little grains of this or that when your going so
fast.
You can't travel into the past, but you can look at it. Just look out.
Moon 1+ seconds
Sun 8 minutes
Andromeda Galaxy 2.3 million years
Correct, you can see yourself in the past too, look in mirror.
Walk backwards, and you see yourself longer ago.
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| User: "Sam Wormley" |
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| Title: Re: Time Travel? |
30 Mar 2005 09:05:31 AM |
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Jan Panteltje wrote:
On a sunny day (Tue, 29 Mar 2005 21:11:45 GMT) it happened Sam Wormley
<swormley1@mchsi.com> wrote in <kwj2e.114556$r55.90044@attbi_s52>:
nobody@nowhere wrote:
Somebody please explain to me ( Joe Stupid ) how it is theoretically possible
to travel into the future.
Also, why is it theoretically impossible to travel into the past?
Thank you.
Perhaps your question is you want to travel into the future slower than
your friends.... live deeper in a gravity well. You live a sea level
and your friends can live in the mountains. Or get one of those American
Express cards without a limit to build and operate a fast rocket ship
and take an extended trip at relativistic speed. Watch out that your
ship doesn't hit an little grains of this or that when your going so
fast.
You can't travel into the past, but you can look at it. Just look out.
Moon 1+ seconds
Sun 8 minutes
Andromeda Galaxy 2.3 million years
Correct, you can see yourself in the past too, look in mirror.
Walk backwards, and you see yourself longer ago.
And if I want to see my trimmer self 20 years ago?
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| User: "Jan Panteltje" |
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| Title: Re: Time Travel? |
30 Mar 2005 08:33:45 AM |
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On a sunny day (Wed, 30 Mar 2005 15:05:31 GMT) it happened Sam Wormley
<swormley1@mchsi.com> wrote in <%ez2e.116546$r55.50112@attbi_s52>:
Jan Panteltje wrote:
On a sunny day (Tue, 29 Mar 2005 21:11:45 GMT) it happened Sam Wormley
<swormley1@mchsi.com> wrote in <kwj2e.114556$r55.90044@attbi_s52>:
nobody@nowhere wrote:
Somebody please explain to me ( Joe Stupid ) how it is theoretically possible
to travel into the future.
Also, why is it theoretically impossible to travel into the past?
Thank you.
Perhaps your question is you want to travel into the future slower than
your friends.... live deeper in a gravity well. You live a sea level
and your friends can live in the mountains. Or get one of those American
Express cards without a limit to build and operate a fast rocket ship
and take an extended trip at relativistic speed. Watch out that your
ship doesn't hit an little grains of this or that when your going so
fast.
You can't travel into the past, but you can look at it. Just look out.
Moon 1+ seconds
Sun 8 minutes
Andromeda Galaxy 2.3 million years
Correct, you can see yourself in the past too, look in mirror.
Walk backwards, and you see yourself longer ago.
And if I want to see my trimmer self 20 years ago?
Ok, lemme see.
10 step back light years!
(remember the light travels from your 20 year older face to the mirror,
then back to your today's eye.
2 x the distance.
This assumes a proper surface mirror, else add 2 x mirror thickness of cause.
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| User: "Pyriform" |
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| Title: Re: Time Travel? |
30 Mar 2005 04:00:06 PM |
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Sam Wormley wrote:
Jan Panteltje wrote:
Correct, you can see yourself in the past too, look in mirror.
Walk backwards, and you see yourself longer ago.
And if I want to see my trimmer self 20 years ago?
Position yourself midway between two parallel mirrors. Have large meals
brought to you three times a day for 20 years. Peer intently into the
recursive series of reflections...
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