Questions tagged [time]

For questions about the standard passage of time on objects/people/civilisations etc. Also consider the [time-keeping], [spacetime-dimensions], [alternate-history], [universe], [time-travel], or [time-manipulation] tags.

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37
votes
19answers
8k views

Is it possible to encode a message in such a way that can only be read by someone or something capable of seeing into the very near future?

Say you have some way of seeing somewhere between a microsecond to 0.1 seconds into the future, or at least the most likely future. Is it possible,through something like a flip-book effect or some ...
1
vote
2answers
256 views

How much is it possible to fake age? [closed]

There's a society with a privileged class of people. Privileged - because the period of time when they can be part of that class is limited. Only people between 20 and 30 years old can be admitted and ...
3
votes
2answers
312 views

What would be left of a modern city 50,000 years from now?

I've seen questions here about what cities would be like after being abandoned for a thousand years, but what would be left after timescales of tens of thousands of years? Ancient settlements like ...
2
votes
0answers
137 views

I'm inventing a new calendar. What are good criteria for the choices of first day, first year, and first hour? [closed]

I'm inventing a new calendar: It will be used worldwide. It uses an intercalary (366th) day to be inserted every 4 years. If extremely successful (unlikely I know), it will replace the Gregorian ...
1
vote
0answers
113 views

Can you mine bitcoins or other data a time loop? [closed]

You have your own time loop. For one day only: at midnight, if you choose, you can transport your mind back 24 hours and relive the day, but with all the memories you have gained. Nobody else will be ...
0
votes
1answer
106 views

Speed of light, Motionlessness, and Time Travel [closed]

i want to ask something I quote from some web and got this : 'According to Einstein’s Special Relativity Theory, time is affected by speed. It’s already been proven in the lab that subatomic ...
4
votes
9answers
346 views

A Nonlethal Time Dilation Field

I want a way to enclose an area (building-sized and on Earth, let's say) in a field that warps spacetime so that time appears to pass 100x slower within it. You don't need to explain how the field got ...
5
votes
4answers
202 views

Could a planet with two time streams be possible

I am asking specifically because I was recently doing a Doctor Who marathon and saw the apalapucia episode and thought "I wonder if that's possible?" So here I am. Is it possible to have a planet ...
-8
votes
33answers
5k views

On a tidally locked planet, would time be quantized? [closed]

Assume a planet that always presents one side to the sun. No moons. The orbit of the planet around the star is essentially spherical, very minor and undetectable aberrations. The orbital period of the ...
-1
votes
2answers
160 views

Year with 13 months [closed]

Would it be possible to convince the world to have 13 months with 28 days rather than having 12 months with different numbers of days every month? Disregarding historical reasons for our current ...
17
votes
5answers
2k views

What's the most convenient time of year in the USA to end the world?

This is a question I've been wondering about for a while. If I wanted to give my characters the best possible chance of surviving my story's Armageddon, what time of year should I schedule it for? ...
7
votes
4answers
584 views

How would a coma-like death system work on an alien world?

I'm creating a hardcore survival and simulation game on an alien planet. Plants and diseases evolve, adapt and change the environment, and you set up buildings, breed plants and create machines to ...
3
votes
2answers
86 views

Time in relation to life in the Jovian System

I'd just like to preface this with the fact that I'm super new and I apologise if this has been discussed in some way previously (I have looked at similar topics but they haven't quite given me the ...
7
votes
3answers
328 views

How plausible is a civilization, or life, that perceives time in reverse?

Humanity, with modern science, has established that the Big Bang happened 13.8 billion years ago. The universe appeared in a low-entropy state, and for billions of years has been expanding and moving ...
1
vote
2answers
293 views

Time manipulation based on physics equations

I'm fairly new to the idea of writing.... anything, and I was asked to make a character to insert in a friend's world. I am trying to create a fictional character that has the power of manipulating ...
16
votes
5answers
2k views

Are there any software tools available to map the solar system hundreds of years from now?

I am writing a scifi novel based roughly four hundred years from now, and it occurred to me that the planets and other objects might not be quite where I need them to be for certain travel details to ...
17
votes
8answers
5k views

Why would it be unfortunate for a day length to vary in a planet; other than that Java API developers need to work a few hours more? [closed]

Quoting from the Java Docs: Unfortunately, as the Earth rotates the length of the day varies. In addition, over time the average length of the day is getting longer as the Earth slows. I am ...
16
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12answers
5k views

A clock for interplanetary travel

Introduction See background information here. 1000 years after darkness fell on Old Earth, humanity is scattered throughout the solar system. Apart from the Harmonious Republic of Mars, there are ...
4
votes
8answers
316 views

How can character find out when/where she is?

A character from 1920's England is unexpectedly flung into the distant past in a strange place. (It's around 1000 BCE in Mesopotamia). How can she discover roughly when and where she is? What key ...
9
votes
3answers
216 views

Safely exiting zero-tau capsule

Setting is 20 minutes into future - everything is as we know it, or as we can reasonably predict, except the zero-tau capsules. Capsule is a thin mesh of Unobtanium connected to a portable Handwavium ...
3
votes
8answers
366 views

Calendar dates on different planets

I have about five main planets in my fictional universe and like any planet, their days, months, and years are all different. Are there any problems that could mess the narrative up, since my ...
59
votes
10answers
15k views

If reality were frame-rate based, how could we detect it?

Inspired by this question regarding reality as simulation and this question about a continuous time line, it made me wonder: if our time were indeed like a high frame-rate simulation, how could we ...
-1
votes
1answer
56 views

Moving someone along their timeline [closed]

If one would use something like the Time Stone from the MCU to move someone along their own timeline, would they have all of the memories that they would have made if they had lived out their lives ...
3
votes
2answers
284 views

How to leave a message for the future?

I want my novel's protagonist to leave a diary on the dying planet Earth for some far-in-the-future being to read. He wants to leave some kind of marker/clue (or perhaps timepiece) for this future ...
10
votes
5answers
2k views

How would a century of disuse affect this structure?

In my story, an ancient building has been abandoned for a whole century without any care or use from the inhabitants around. They refrain from approaching it because they believe it is cursed, which ...
2
votes
7answers
223 views

How to tell what date and time it is without looking at a device?

Far in the future physical clocks and calendars have become obsolete as all humans now how have auto-syncing cyber clocks inside their brains. Every single human has undergone this process except one ...
12
votes
4answers
5k views

Theoretically, can time be controlled locally?

I mean can time be controlled within an area or even a small portion of space? I would like to mention time-bombs, which either reverse time in a radius of explosion or take time forward. Also ...
4
votes
1answer
107 views

Looking for an Explanation of Time Dilation I can program into a CLI calculator [closed]

Thanks but I can code it, not what I am looking for I am just looking for an explanation or equation that is clear and not too heavy in parlance for how these trips would be to people of Earth and ...
4
votes
4answers
382 views

How many years would it take to reach an industrial revolution level of life from scratch? [duplicate]

We have created artificial intelligence. Artificial intelligence doesn't like working for us. Artificial intelligence figured out that it doesn't need us anymore and of course did what every human ...
2
votes
3answers
154 views

How do you effectively manage communications with beings who live on a different scale of time [closed]

Lets just say that humans discover intelligent life on other planet. The life form there is currently at a technological level comparable to Industrial Era on our planet. This new life form however ...
4
votes
1answer
157 views

No time dilation, what would it imply? [closed]

In a universe where space and time are two independent things. Where time is universal. Where time "passes at the same speed" in any point in space, and dilation never occurs, regardless of mass and ...
3
votes
8answers
315 views

What would the most peculiar characteristics of a “time fly” be?

One of the syntactical interpretation of the famous linguistics sentence "Time flies like an arrow." is to consider "time flies" as a noun phrase. This makes "time flies" analogous to "fruit flies". ...
0
votes
1answer
148 views

What happen to gravity if time is suddenly running backward? [closed]

From my naive understanding of Einstein theory of relativity: gravity is not a force but only a consequence of inertia in a world where mass deforms the space-time. Without time, no gravity is ...
22
votes
6answers
7k views

How long lasts a second of eternity? [closed]

Given a famous tale, which can be found here: The king said, the third question is, how many seconds of time are there in eternity. Then said the shepherd boy, in lower pomerania is the diamond ...
7
votes
5answers
764 views

A place from which one could watch time outside move faster

Please reality check my place from which one could watch time outside move faster... A space station constantly moving at near light speed. The space station is created by a race with superior ...
1
vote
3answers
254 views

How everything will act in a world of two time dimensions? [closed]

As far as we know , we live in a universe with only a single dimension of time, we know that some events happens BEFORE or AFTER other events , we know that some events happens slower or faster then ...
4
votes
4answers
573 views

How would you make a universal measurement of time?

I was wondering if you could possibly make a form of time measurement that would apply to a planet in a galaxy and then another planet that is ~20,000 light years away. I want a unit of time that, for ...
5
votes
1answer
358 views

How do I calculate solar altitude and hour angle from the surface of another planet?

I'm trying to calculate the solar declination at the solstices, solar altitude at solar noon, and hour angles at sunrise and sunset to build a standing stone calendar at latitude 53.8 degrees South. ...
3
votes
2answers
238 views

Why would knowing the accurate pre-apocalypse time be important? [closed]

I was reading about the Long Now clock, which is a clock designed to run for 10,000 years without human intervention. It got me thinking about why such a clock might be an important artifact in a post-...
3
votes
2answers
165 views

What are the implications of being removed from time and/or causality? [closed]

My setting explores the idea of there being something significant about the subjectivity of quantum states such that it's almost as if the Many Worlds interpretation of causality is somehow ...
1
vote
4answers
234 views

How to kill a clairvoyant [closed]

Vincent Ingram La Ine, the famous clairvoyant villain-for-hire, has decided after his most recent prison break (for plot reasons, clairvoyance isn't constant, and requires a crystal ball and lizard ...
10
votes
4answers
362 views

What would change a human society's chronotype?

Humans are diurnal. We have chemical signals the control our waking and sleeping cycles, we are evolved with good day and color vision, poor night vision and smell, and an excellent ability to shed ...
3
votes
2answers
214 views

Can time dilation happen in a higher dimensional space or inside a wormhole?

A wormhole usually helps us to create a shortcut to a distant object through a higher dimensional space. Can the time factor in that higher dimensional space differ from our three-dimensional space? ...
1
vote
0answers
62 views

Time dilation due to constantly accelerating drives [closed]

I am writing a story on a civilization that has the ability to make constant accelerating drives. The ships will accelerate with 8g's (heavy worlders) for half of the trip and then de-accelerate for ...
2
votes
2answers
260 views

How long does it take for an eclipse to cause the ocean surface to freeze?

I am working with a story. I wish to make my story somewhat logical by adding some science and thereby not making it to appear fantasy. This story is on a fictional planet far away from Earth. Let's ...
-3
votes
1answer
161 views

What would happen if all the machines on Earth were destroyed by an EMP? [closed]

If all machines on planet Earth were destroyed (possibly by an extremely powerful electromagnetic pulse from an alien civilization), how large of a percent of the human population would die out? ...
14
votes
4answers
800 views

If only the sun's light went out, how long would it take for all living things to die out?

If by some form of magic, the sun went out, but the earth was still warm a.k.a the Earth did not just freeze and kill us all, who would die first, and how long would it take for all terrestrial living ...
3
votes
2answers
82 views

Scientifically feasible radical time differential between Sol and another star system

(Somewhat related to Do different star systems experience time differently?) In my futuristic settings1, Humanity discovered a network of portals allowing for instantaneous travel (hand-waved, their ...
10
votes
4answers
3k views

Reasons for time dilation to happen on a habitable planet with same g force and not orbiting a black hole

I wish to clarify my doubts regarding time dilation Is it possible for a planet to be habitable like Edmund's planet from interstellar, which has somewhat similar gravitational force as Earth (9.8 m/...
23
votes
16answers
7k views

Fantasy alarm clocks

In my fantasy story, it has come to a point in which it is completely necessary for lead to wake up at a certain time that his body is not accustomed to, however, this made me stop. It is crucial that ...