Time travel from stationary position?Laws and usage of easily accessible time travel?When can we apply FTL technologyTime travel coordinatesIf FTL travel was invented tomorrow, would it change society?FTL in a relativistic universe. Am I avoiding the time-machine?How would mankind “tame” wormholes enough to use them for travel?How to realistically build a time machine?If I travel through a worm hole some massive distance, lets say 6 billion light years, have I traveled in time?Extrapolating from the GPS network for time travelPlausible reason why a time machine would be built in a 1990s era sports car?
Define, (actually define) the "stability" and "energy" of a compound
Brexit - No Deal Rejection
Should we release the security issues we found in our product as CVE or we can just update those on weekly release notes?
What options are left, if Britain cannot decide?
How to write cleanly even if my character uses expletive language?
Why do Australian milk farmers need to protest supermarkets' milk price?
How to explain that I do not want to visit a country due to personal safety concern?
If I can solve Sudoku can I solve Travelling Salesman Problem(TSP)? If yes, how?
Co-worker team leader wants to inject his friend's awful software into our development. What should I say to our common boss?
What should tie a collection of short-stories together?
Hacking a Safe Lock after 3 tries
Charles Hockett - 'F' article?
What is the rarity of this homebrew magic staff?
Do I need to be arrogant to get ahead?
Gantt Chart like rectangles with log scale
Professor being mistaken for a grad student
How can you use ICE tables to solve multiple coupled equilibria?
Life insurance that covers only simultaneous/dual deaths
A limit with limit zero everywhere must be zero somewhere
What's the meaning of “spike” in the context of “adrenaline spike”?
If curse and magic is two sides of the same coin, why the former is forbidden?
Are there other languages, besides English, where the indefinite (or definite) article varies based on sound?
It's a yearly task, alright
What exactly is this small puffer fish doing and how did it manage to accomplish such a feat?
Time travel from stationary position?
Laws and usage of easily accessible time travel?When can we apply FTL technologyTime travel coordinatesIf FTL travel was invented tomorrow, would it change society?FTL in a relativistic universe. Am I avoiding the time-machine?How would mankind “tame” wormholes enough to use them for travel?How to realistically build a time machine?If I travel through a worm hole some massive distance, lets say 6 billion light years, have I traveled in time?Extrapolating from the GPS network for time travelPlausible reason why a time machine would be built in a 1990s era sports car?
$begingroup$
This is my first question on this site, which I recently found and can’t get enough of.
In many time travel scenarios, the machine is static in space. My question is how to explain this. For example, in HG Wells' works, it's always in the same location. I’m referring the earth rotating around the sun, as well as the sun moving across the cosmos.
Even if you made a timeship, moving a couple hundred years could mean light years, without FTL you are stuck in deep space.
I have also contemplated using a time machine as a sort of FTL calculating some time in the past or present when another star system will be in the same location we currently are.
Is there a realistic answer to why we stay grounded in the same space while moving through time? It might be easily answered by the theory of relativity, and I just don’t understand.
Note: I’m not thinking about using near light speed time travel, because obviously you would be moving anyway. Thinking more of the getting inside and flipping some switches.
science-based science-fiction space-travel time-travel
edited 6 hours ago
Renan
49.5k13115250
asked 7 hours ago
TravisTravis
442
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
This is my first question on this site, which I recently found and can’t get enough of.
In many time travel scenarios, the machine is static in space. My question is how to explain this. For example, in HG Wells' works, it's always in the same location. I’m referring the earth rotating around the sun, as well as the sun moving across the cosmos.
Even if you made a timeship, moving a couple hundred years could mean light years, without FTL you are stuck in deep space.
I have also contemplated using a time machine as a sort of FTL calculating some time in the past or present when another star system will be in the same location we currently are.
Is there a realistic answer to why we stay grounded in the same space while moving through time? It might be easily answered by the theory of relativity, and I just don’t understand.
Note: I’m not thinking about using near light speed time travel, because obviously you would be moving anyway. Thinking more of the getting inside and flipping some switches.
science-based science-fiction space-travel time-travel
edited 6 hours ago
Renan
49.5k13115250
asked 7 hours ago
TravisTravis
442
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
$begingroup$
Welcome to Worldbuilding.SE Travis. This is an interesting question but I'm finding the way you laid it out a bit confusing. I see that you're wondering about location changes relative to the movement of the cosmos, but some of the details you gave make it unclear exactly what you're asking. I did an edit on your question for grammar etc (the shift key is your friend!) and hopefully did not change the meaning of anything. I also wonder if you really want the tag science-based since it's about something we don't really have the science for; if you're looking for theory, it might work.
$endgroup$
– Cyn
6 hours ago
2
$begingroup$
There is no universal rest frame of reference - internalize this truth and your question solves itself ;) I wwill elaborate on this in an answer when I have some time.
$endgroup$
– Renan
6 hours ago
$begingroup$
The edit is great, thank you. I just used science based thinking, the answers would better explain the logic. I know the easy answer it’s a space-time machine, which I consider more of a wormhole device. I look forward to your explanation Renan. I may need to rework the whole question, I will think on it.
$endgroup$
– Travis
6 hours ago
add a comment |
$begingroup$
This is my first question on this site, which I recently found and can’t get enough of.
In many time travel scenarios, the machine is static in space. My question is how to explain this. For example, in HG Wells' works, it's always in the same location. I’m referring the earth rotating around the sun, as well as the sun moving across the cosmos.
Even if you made a timeship, moving a couple hundred years could mean light years, without FTL you are stuck in deep space.
I have also contemplated using a time machine as a sort of FTL calculating some time in the past or present when another star system will be in the same location we currently are.
Is there a realistic answer to why we stay grounded in the same space while moving through time? It might be easily answered by the theory of relativity, and I just don’t understand.
Note: I’m not thinking about using near light speed time travel, because obviously you would be moving anyway. Thinking more of the getting inside and flipping some switches.
science-based science-fiction space-travel time-travel
edited 6 hours ago
Renan
49.5k13115250
asked 7 hours ago
TravisTravis
442
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
This is my first question on this site, which I recently found and can’t get enough of.
In many time travel scenarios, the machine is static in space. My question is how to explain this. For example, in HG Wells' works, it's always in the same location. I’m referring the earth rotating around the sun, as well as the sun moving across the cosmos.
Even if you made a timeship, moving a couple hundred years could mean light years, without FTL you are stuck in deep space.
I have also contemplated using a time machine as a sort of FTL calculating some time in the past or present when another star system will be in the same location we currently are.
Is there a realistic answer to why we stay grounded in the same space while moving through time? It might be easily answered by the theory of relativity, and I just don’t understand.
Note: I’m not thinking about using near light speed time travel, because obviously you would be moving anyway. Thinking more of the getting inside and flipping some switches.
science-based science-fiction space-travel time-travel
science-based science-fiction space-travel time-travel
edited 6 hours ago
Renan
49.5k13115250
asked 7 hours ago
TravisTravis
442
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 6 hours ago
Renan
49.5k13115250
asked 7 hours ago
TravisTravis
442
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 6 hours ago
Renan
49.5k13115250
edited 6 hours ago
Renan
49.5k13115250
edited 6 hours ago
Renan
49.5k13115250
49.5k13115250
asked 7 hours ago
TravisTravis
442
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 7 hours ago
TravisTravis
442
asked 7 hours ago
TravisTravis
442
442
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Travis is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$begingroup$
Welcome to Worldbuilding.SE Travis. This is an interesting question but I'm finding the way you laid it out a bit confusing. I see that you're wondering about location changes relative to the movement of the cosmos, but some of the details you gave make it unclear exactly what you're asking. I did an edit on your question for grammar etc (the shift key is your friend!) and hopefully did not change the meaning of anything. I also wonder if you really want the tag science-based since it's about something we don't really have the science for; if you're looking for theory, it might work.
$endgroup$
– Cyn
6 hours ago
2
$begingroup$
There is no universal rest frame of reference - internalize this truth and your question solves itself ;) I wwill elaborate on this in an answer when I have some time.
$endgroup$
– Renan
6 hours ago
$begingroup$
The edit is great, thank you. I just used science based thinking, the answers would better explain the logic. I know the easy answer it’s a space-time machine, which I consider more of a wormhole device. I look forward to your explanation Renan. I may need to rework the whole question, I will think on it.
$endgroup$
– Travis
6 hours ago
add a comment |
$begingroup$
Welcome to Worldbuilding.SE Travis. This is an interesting question but I'm finding the way you laid it out a bit confusing. I see that you're wondering about location changes relative to the movement of the cosmos, but some of the details you gave make it unclear exactly what you're asking. I did an edit on your question for grammar etc (the shift key is your friend!) and hopefully did not change the meaning of anything. I also wonder if you really want the tag science-based since it's about something we don't really have the science for; if you're looking for theory, it might work.
$endgroup$
– Cyn
6 hours ago
2
$begingroup$
There is no universal rest frame of reference - internalize this truth and your question solves itself ;) I wwill elaborate on this in an answer when I have some time.
$endgroup$
– Renan
6 hours ago
$begingroup$
The edit is great, thank you. I just used science based thinking, the answers would better explain the logic. I know the easy answer it’s a space-time machine, which I consider more of a wormhole device. I look forward to your explanation Renan. I may need to rework the whole question, I will think on it.
$endgroup$
– Travis
6 hours ago
$begingroup$
Welcome to Worldbuilding.SE Travis. This is an interesting question but I'm finding the way you laid it out a bit confusing. I see that you're wondering about location changes relative to the movement of the cosmos, but some of the details you gave make it unclear exactly what you're asking. I did an edit on your question for grammar etc (the shift key is your friend!) and hopefully did not change the meaning of anything. I also wonder if you really want the tag science-based since it's about something we don't really have the science for; if you're looking for theory, it might work.
$endgroup$
– Cyn
6 hours ago
$begingroup$
Welcome to Worldbuilding.SE Travis. This is an interesting question but I'm finding the way you laid it out a bit confusing. I see that you're wondering about location changes relative to the movement of the cosmos, but some of the details you gave make it unclear exactly what you're asking. I did an edit on your question for grammar etc (the shift key is your friend!) and hopefully did not change the meaning of anything. I also wonder if you really want the tag science-based since it's about something we don't really have the science for; if you're looking for theory, it might work.
$endgroup$
– Cyn
6 hours ago
2
2
$begingroup$
There is no universal rest frame of reference - internalize this truth and your question solves itself ;) I wwill elaborate on this in an answer when I have some time.
$endgroup$
– Renan
6 hours ago
$begingroup$
There is no universal rest frame of reference - internalize this truth and your question solves itself ;) I wwill elaborate on this in an answer when I have some time.
$endgroup$
– Renan
6 hours ago
$begingroup$
The edit is great, thank you. I just used science based thinking, the answers would better explain the logic. I know the easy answer it’s a space-time machine, which I consider more of a wormhole device. I look forward to your explanation Renan. I may need to rework the whole question, I will think on it.
$endgroup$
– Travis
6 hours ago
$begingroup$
The edit is great, thank you. I just used science based thinking, the answers would better explain the logic. I know the easy answer it’s a space-time machine, which I consider more of a wormhole device. I look forward to your explanation Renan. I may need to rework the whole question, I will think on it.
$endgroup$
– Travis
6 hours ago
add a comment |
4 Answers
4
active
oldest
votes
$begingroup$
The concept of space and time being combined into spacetime may be the relevant factor here. It is possible that while you are traveling through time, that you will still be under the influence of Earth's gravity. Earth's gravity well might function as sort of an anchor or tether, that will stop you from flying off into the cosmos. Often times in fiction you have to feed a time machine a "time" and "place". It is possible that these fictional devices have a sort of GPS built in that will calculate where a certain spot on Earth will be located in the cosmos at any given time. So long as you don't travel back to before the formation on the Earth you should be just fine.
answered 6 hours ago
SciFiGuySciFiGuy
7908
$endgroup$
1
$begingroup$
This. Since there is no universal rest frame of reference, you can't just "pop" from one point to another. You have to follow a path in spacetime.
$endgroup$
– Renan
6 hours ago
1
$begingroup$
You answered faster than me about gravity. But +1 for using the words anchor and tether, as a non-native speaker, I couldn't think of them.
$endgroup$
– kikirex
6 hours ago
add a comment |
$begingroup$
Use gravitational mass as reference.
(I wrote a time-travel story years ago and I stumbled accross this problem too. In my novel, I explained it in the simplest possible way and discarded any question that may have resulted from it, because plot.)
The device takes the mass of the most dense object nearby as a dot of reference in time, this object being Earth itself. When time-travelling, taking a place as a point of reference makes no sense, since everything moves, either within the cosmos, or on Earth itself: continents may rise and sink while you are time-travelling, and the only reason you do not end miserably into molten rock is plot armor.
But if your time-machine has a gravity densimeter (I just made up that name, feel free to make up a new one by yourself), it can estimate the distance from the most important gravitational mass nearby, and adjust itself to always stay tangent to this mass, while keeping its orientation (the differences in the mass of the Earth being negligible on a grand scale).
Thus, not only you can time-travel on Earth without moving (or so little that it will not affect anything), but also if you have to time-travel on a bigger scale, you can take any other astral object as reference, given it has a massive gravitational mass: be it a planet, a star, a black hole, etc.
Of course, the higher the density, the higher the time-distorsion factor will be.
answered 6 hours ago
kikirexkikirex
86649
$endgroup$
add a comment |
$begingroup$
The easy way to resolve this is to just have the machine "exist" throughout any time it travels through. Any forces applied to it from the outside can move it like normal. That's why it stays where it is (and also why it doesn't fall through the planet).
answered 6 hours ago
John KossaJohn Kossa
3994
$endgroup$
$begingroup$
"Any forces can move it"... "That's why it stays where it is" Did you mean to say that external forces CANNOT move it? I'm confused
$endgroup$
– DSKekaha
2 hours ago
add a comment |
$begingroup$
Speed can only be determined relative to something else. Why wouldnt time be different? When traveling the time machine has to have a referencepoint or it might lack the ability to travel at all. You might be able to travel as well but with the time machine already traveling through time it might just be too difficult to travel. And being off with your aim could also mean that you now occupy a rock, or any distance above ground from 1mm to 100.000km. Its not worth the risk.
Additionally we know that gravitational effects also affect time. It might simply be that the time machine function only when close enough to a large enough mass and use the gravitational effects to travel. When traveling through time you have to keep the time machine close enough to said mass or you get ejected. Traveling to another location through the gravitational effect of the planet changes the effects the time machine uses, making it uncertain where you end up... And when. Better stick to the same location!
answered 6 hours ago
DemiganDemigan
10.1k11048
$endgroup$
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
return StackExchange.using("mathjaxEditing", function ()
StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix)
StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["$", "$"], ["\\(","\\)"]]);
);
);
, "mathjax-editing");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "579"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
noCode: true, onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Travis is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fworldbuilding.stackexchange.com%2fquestions%2f141553%2ftime-travel-from-stationary-position%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
4 Answers
4
active
oldest
votes
4 Answers
4
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
The concept of space and time being combined into spacetime may be the relevant factor here. It is possible that while you are traveling through time, that you will still be under the influence of Earth's gravity. Earth's gravity well might function as sort of an anchor or tether, that will stop you from flying off into the cosmos. Often times in fiction you have to feed a time machine a "time" and "place". It is possible that these fictional devices have a sort of GPS built in that will calculate where a certain spot on Earth will be located in the cosmos at any given time. So long as you don't travel back to before the formation on the Earth you should be just fine.
answered 6 hours ago
SciFiGuySciFiGuy
7908
$endgroup$
1
$begingroup$
This. Since there is no universal rest frame of reference, you can't just "pop" from one point to another. You have to follow a path in spacetime.
$endgroup$
– Renan
6 hours ago
1
$begingroup$
You answered faster than me about gravity. But +1 for using the words anchor and tether, as a non-native speaker, I couldn't think of them.
$endgroup$
– kikirex
6 hours ago
add a comment |
$begingroup$
The concept of space and time being combined into spacetime may be the relevant factor here. It is possible that while you are traveling through time, that you will still be under the influence of Earth's gravity. Earth's gravity well might function as sort of an anchor or tether, that will stop you from flying off into the cosmos. Often times in fiction you have to feed a time machine a "time" and "place". It is possible that these fictional devices have a sort of GPS built in that will calculate where a certain spot on Earth will be located in the cosmos at any given time. So long as you don't travel back to before the formation on the Earth you should be just fine.
answered 6 hours ago
SciFiGuySciFiGuy
7908
$endgroup$
1
$begingroup$
This. Since there is no universal rest frame of reference, you can't just "pop" from one point to another. You have to follow a path in spacetime.
$endgroup$
– Renan
6 hours ago
1
$begingroup$
You answered faster than me about gravity. But +1 for using the words anchor and tether, as a non-native speaker, I couldn't think of them.
$endgroup$
– kikirex
6 hours ago
add a comment |
$begingroup$
The concept of space and time being combined into spacetime may be the relevant factor here. It is possible that while you are traveling through time, that you will still be under the influence of Earth's gravity. Earth's gravity well might function as sort of an anchor or tether, that will stop you from flying off into the cosmos. Often times in fiction you have to feed a time machine a "time" and "place". It is possible that these fictional devices have a sort of GPS built in that will calculate where a certain spot on Earth will be located in the cosmos at any given time. So long as you don't travel back to before the formation on the Earth you should be just fine.
answered 6 hours ago
SciFiGuySciFiGuy
7908
$endgroup$
The concept of space and time being combined into spacetime may be the relevant factor here. It is possible that while you are traveling through time, that you will still be under the influence of Earth's gravity. Earth's gravity well might function as sort of an anchor or tether, that will stop you from flying off into the cosmos. Often times in fiction you have to feed a time machine a "time" and "place". It is possible that these fictional devices have a sort of GPS built in that will calculate where a certain spot on Earth will be located in the cosmos at any given time. So long as you don't travel back to before the formation on the Earth you should be just fine.
answered 6 hours ago
SciFiGuySciFiGuy
7908
edited 6 hours ago
answered 6 hours ago
SciFiGuySciFiGuy
7908
answered 6 hours ago
SciFiGuySciFiGuy
7908
answered 6 hours ago
SciFiGuySciFiGuy
7908
7908
1
$begingroup$
This. Since there is no universal rest frame of reference, you can't just "pop" from one point to another. You have to follow a path in spacetime.
$endgroup$
– Renan
6 hours ago
1
$begingroup$
You answered faster than me about gravity. But +1 for using the words anchor and tether, as a non-native speaker, I couldn't think of them.
$endgroup$
– kikirex
6 hours ago
add a comment |
1
$begingroup$
This. Since there is no universal rest frame of reference, you can't just "pop" from one point to another. You have to follow a path in spacetime.
$endgroup$
– Renan
6 hours ago
1
$begingroup$
You answered faster than me about gravity. But +1 for using the words anchor and tether, as a non-native speaker, I couldn't think of them.
$endgroup$
– kikirex
6 hours ago
1
1
$begingroup$
This. Since there is no universal rest frame of reference, you can't just "pop" from one point to another. You have to follow a path in spacetime.
$endgroup$
– Renan
6 hours ago
$begingroup$
This. Since there is no universal rest frame of reference, you can't just "pop" from one point to another. You have to follow a path in spacetime.
$endgroup$
– Renan
6 hours ago
1
1
$begingroup$
You answered faster than me about gravity. But +1 for using the words anchor and tether, as a non-native speaker, I couldn't think of them.
$endgroup$
– kikirex
6 hours ago
$begingroup$
You answered faster than me about gravity. But +1 for using the words anchor and tether, as a non-native speaker, I couldn't think of them.
$endgroup$
– kikirex
6 hours ago
add a comment |
$begingroup$
Use gravitational mass as reference.
(I wrote a time-travel story years ago and I stumbled accross this problem too. In my novel, I explained it in the simplest possible way and discarded any question that may have resulted from it, because plot.)
The device takes the mass of the most dense object nearby as a dot of reference in time, this object being Earth itself. When time-travelling, taking a place as a point of reference makes no sense, since everything moves, either within the cosmos, or on Earth itself: continents may rise and sink while you are time-travelling, and the only reason you do not end miserably into molten rock is plot armor.
But if your time-machine has a gravity densimeter (I just made up that name, feel free to make up a new one by yourself), it can estimate the distance from the most important gravitational mass nearby, and adjust itself to always stay tangent to this mass, while keeping its orientation (the differences in the mass of the Earth being negligible on a grand scale).
Thus, not only you can time-travel on Earth without moving (or so little that it will not affect anything), but also if you have to time-travel on a bigger scale, you can take any other astral object as reference, given it has a massive gravitational mass: be it a planet, a star, a black hole, etc.
Of course, the higher the density, the higher the time-distorsion factor will be.
answered 6 hours ago
kikirexkikirex
86649
$endgroup$
add a comment |
$begingroup$
Use gravitational mass as reference.
(I wrote a time-travel story years ago and I stumbled accross this problem too. In my novel, I explained it in the simplest possible way and discarded any question that may have resulted from it, because plot.)
The device takes the mass of the most dense object nearby as a dot of reference in time, this object being Earth itself. When time-travelling, taking a place as a point of reference makes no sense, since everything moves, either within the cosmos, or on Earth itself: continents may rise and sink while you are time-travelling, and the only reason you do not end miserably into molten rock is plot armor.
But if your time-machine has a gravity densimeter (I just made up that name, feel free to make up a new one by yourself), it can estimate the distance from the most important gravitational mass nearby, and adjust itself to always stay tangent to this mass, while keeping its orientation (the differences in the mass of the Earth being negligible on a grand scale).
Thus, not only you can time-travel on Earth without moving (or so little that it will not affect anything), but also if you have to time-travel on a bigger scale, you can take any other astral object as reference, given it has a massive gravitational mass: be it a planet, a star, a black hole, etc.
Of course, the higher the density, the higher the time-distorsion factor will be.
answered 6 hours ago
kikirexkikirex
86649
$endgroup$
add a comment |
$begingroup$
Use gravitational mass as reference.
(I wrote a time-travel story years ago and I stumbled accross this problem too. In my novel, I explained it in the simplest possible way and discarded any question that may have resulted from it, because plot.)
The device takes the mass of the most dense object nearby as a dot of reference in time, this object being Earth itself. When time-travelling, taking a place as a point of reference makes no sense, since everything moves, either within the cosmos, or on Earth itself: continents may rise and sink while you are time-travelling, and the only reason you do not end miserably into molten rock is plot armor.
But if your time-machine has a gravity densimeter (I just made up that name, feel free to make up a new one by yourself), it can estimate the distance from the most important gravitational mass nearby, and adjust itself to always stay tangent to this mass, while keeping its orientation (the differences in the mass of the Earth being negligible on a grand scale).
Thus, not only you can time-travel on Earth without moving (or so little that it will not affect anything), but also if you have to time-travel on a bigger scale, you can take any other astral object as reference, given it has a massive gravitational mass: be it a planet, a star, a black hole, etc.
Of course, the higher the density, the higher the time-distorsion factor will be.
answered 6 hours ago
kikirexkikirex
86649
$endgroup$
Use gravitational mass as reference.
(I wrote a time-travel story years ago and I stumbled accross this problem too. In my novel, I explained it in the simplest possible way and discarded any question that may have resulted from it, because plot.)
The device takes the mass of the most dense object nearby as a dot of reference in time, this object being Earth itself. When time-travelling, taking a place as a point of reference makes no sense, since everything moves, either within the cosmos, or on Earth itself: continents may rise and sink while you are time-travelling, and the only reason you do not end miserably into molten rock is plot armor.
But if your time-machine has a gravity densimeter (I just made up that name, feel free to make up a new one by yourself), it can estimate the distance from the most important gravitational mass nearby, and adjust itself to always stay tangent to this mass, while keeping its orientation (the differences in the mass of the Earth being negligible on a grand scale).
Thus, not only you can time-travel on Earth without moving (or so little that it will not affect anything), but also if you have to time-travel on a bigger scale, you can take any other astral object as reference, given it has a massive gravitational mass: be it a planet, a star, a black hole, etc.
Of course, the higher the density, the higher the time-distorsion factor will be.
answered 6 hours ago
kikirexkikirex
86649
answered 6 hours ago
kikirexkikirex
86649
answered 6 hours ago
kikirexkikirex
86649
answered 6 hours ago
kikirexkikirex
86649
86649
add a comment |
add a comment |
$begingroup$
The easy way to resolve this is to just have the machine "exist" throughout any time it travels through. Any forces applied to it from the outside can move it like normal. That's why it stays where it is (and also why it doesn't fall through the planet).
answered 6 hours ago
John KossaJohn Kossa
3994
$endgroup$
$begingroup$
"Any forces can move it"... "That's why it stays where it is" Did you mean to say that external forces CANNOT move it? I'm confused
$endgroup$
– DSKekaha
2 hours ago
add a comment |
$begingroup$
The easy way to resolve this is to just have the machine "exist" throughout any time it travels through. Any forces applied to it from the outside can move it like normal. That's why it stays where it is (and also why it doesn't fall through the planet).
answered 6 hours ago
John KossaJohn Kossa
3994
$endgroup$
$begingroup$
"Any forces can move it"... "That's why it stays where it is" Did you mean to say that external forces CANNOT move it? I'm confused
$endgroup$
– DSKekaha
2 hours ago
add a comment |
$begingroup$
The easy way to resolve this is to just have the machine "exist" throughout any time it travels through. Any forces applied to it from the outside can move it like normal. That's why it stays where it is (and also why it doesn't fall through the planet).
answered 6 hours ago
John KossaJohn Kossa
3994
$endgroup$
The easy way to resolve this is to just have the machine "exist" throughout any time it travels through. Any forces applied to it from the outside can move it like normal. That's why it stays where it is (and also why it doesn't fall through the planet).
answered 6 hours ago
John KossaJohn Kossa
3994
answered 6 hours ago
John KossaJohn Kossa
3994
answered 6 hours ago
John KossaJohn Kossa
3994
answered 6 hours ago
John KossaJohn Kossa
3994
3994
$begingroup$
"Any forces can move it"... "That's why it stays where it is" Did you mean to say that external forces CANNOT move it? I'm confused
$endgroup$
– DSKekaha
2 hours ago
add a comment |
$begingroup$
"Any forces can move it"... "That's why it stays where it is" Did you mean to say that external forces CANNOT move it? I'm confused
$endgroup$
– DSKekaha
2 hours ago
$begingroup$
"Any forces can move it"... "That's why it stays where it is" Did you mean to say that external forces CANNOT move it? I'm confused
$endgroup$
– DSKekaha
2 hours ago
$begingroup$
"Any forces can move it"... "That's why it stays where it is" Did you mean to say that external forces CANNOT move it? I'm confused
$endgroup$
– DSKekaha
2 hours ago
add a comment |
$begingroup$
Speed can only be determined relative to something else. Why wouldnt time be different? When traveling the time machine has to have a referencepoint or it might lack the ability to travel at all. You might be able to travel as well but with the time machine already traveling through time it might just be too difficult to travel. And being off with your aim could also mean that you now occupy a rock, or any distance above ground from 1mm to 100.000km. Its not worth the risk.
Additionally we know that gravitational effects also affect time. It might simply be that the time machine function only when close enough to a large enough mass and use the gravitational effects to travel. When traveling through time you have to keep the time machine close enough to said mass or you get ejected. Traveling to another location through the gravitational effect of the planet changes the effects the time machine uses, making it uncertain where you end up... And when. Better stick to the same location!
answered 6 hours ago
DemiganDemigan
10.1k11048
$endgroup$
add a comment |
$begingroup$
Speed can only be determined relative to something else. Why wouldnt time be different? When traveling the time machine has to have a referencepoint or it might lack the ability to travel at all. You might be able to travel as well but with the time machine already traveling through time it might just be too difficult to travel. And being off with your aim could also mean that you now occupy a rock, or any distance above ground from 1mm to 100.000km. Its not worth the risk.
Additionally we know that gravitational effects also affect time. It might simply be that the time machine function only when close enough to a large enough mass and use the gravitational effects to travel. When traveling through time you have to keep the time machine close enough to said mass or you get ejected. Traveling to another location through the gravitational effect of the planet changes the effects the time machine uses, making it uncertain where you end up... And when. Better stick to the same location!
answered 6 hours ago
DemiganDemigan
10.1k11048
$endgroup$
add a comment |
$begingroup$
Speed can only be determined relative to something else. Why wouldnt time be different? When traveling the time machine has to have a referencepoint or it might lack the ability to travel at all. You might be able to travel as well but with the time machine already traveling through time it might just be too difficult to travel. And being off with your aim could also mean that you now occupy a rock, or any distance above ground from 1mm to 100.000km. Its not worth the risk.
Additionally we know that gravitational effects also affect time. It might simply be that the time machine function only when close enough to a large enough mass and use the gravitational effects to travel. When traveling through time you have to keep the time machine close enough to said mass or you get ejected. Traveling to another location through the gravitational effect of the planet changes the effects the time machine uses, making it uncertain where you end up... And when. Better stick to the same location!
answered 6 hours ago
DemiganDemigan
10.1k11048
$endgroup$
Speed can only be determined relative to something else. Why wouldnt time be different? When traveling the time machine has to have a referencepoint or it might lack the ability to travel at all. You might be able to travel as well but with the time machine already traveling through time it might just be too difficult to travel. And being off with your aim could also mean that you now occupy a rock, or any distance above ground from 1mm to 100.000km. Its not worth the risk.
Additionally we know that gravitational effects also affect time. It might simply be that the time machine function only when close enough to a large enough mass and use the gravitational effects to travel. When traveling through time you have to keep the time machine close enough to said mass or you get ejected. Traveling to another location through the gravitational effect of the planet changes the effects the time machine uses, making it uncertain where you end up... And when. Better stick to the same location!
answered 6 hours ago
DemiganDemigan
10.1k11048
answered 6 hours ago
DemiganDemigan
10.1k11048
answered 6 hours ago
DemiganDemigan
10.1k11048
answered 6 hours ago
DemiganDemigan
10.1k11048
10.1k11048
add a comment |
add a comment |
Travis is a new contributor. Be nice, and check out our Code of Conduct.
Travis is a new contributor. Be nice, and check out our Code of Conduct.
Travis is a new contributor. Be nice, and check out our Code of Conduct.
Travis is a new contributor. Be nice, and check out our Code of Conduct.
Thanks for contributing an answer to Worldbuilding Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fworldbuilding.stackexchange.com%2fquestions%2f141553%2ftime-travel-from-stationary-position%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
var $window = $(window),
onScroll = function(e)
var $elem = $('.new-login-left'),
docViewTop = $window.scrollTop(),
docViewBottom = docViewTop + $window.height(),
elemTop = $elem.offset().top,
elemBottom = elemTop + $elem.height();
if ((docViewTop elemBottom))
StackExchange.using('gps', function() StackExchange.gps.track('embedded_signup_form.view', location: 'question_page' ); );
$window.unbind('scroll', onScroll);
;
$window.on('scroll', onScroll);
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
$begingroup$
Welcome to Worldbuilding.SE Travis. This is an interesting question but I'm finding the way you laid it out a bit confusing. I see that you're wondering about location changes relative to the movement of the cosmos, but some of the details you gave make it unclear exactly what you're asking. I did an edit on your question for grammar etc (the shift key is your friend!) and hopefully did not change the meaning of anything. I also wonder if you really want the tag science-based since it's about something we don't really have the science for; if you're looking for theory, it might work.
$endgroup$
– Cyn
6 hours ago
2
$begingroup$
There is no universal rest frame of reference - internalize this truth and your question solves itself ;) I wwill elaborate on this in an answer when I have some time.
$endgroup$
– Renan
6 hours ago
$begingroup$
The edit is great, thank you. I just used science based thinking, the answers would better explain the logic. I know the easy answer it’s a space-time machine, which I consider more of a wormhole device. I look forward to your explanation Renan. I may need to rework the whole question, I will think on it.
$endgroup$
– Travis
6 hours ago