Questions tagged [time-dilation]

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How does $g$-force relate to time dilation?

In the imdb.com goofs page of the movie Interstellar, I found this statement: How does time dilation affect $g$-force? If this could be explained in Laymen's terms it would be much appreciated.
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Does one observe light reach infinity in finite time in AdS spacetime?

I have a question about the following passage from this article: Moschidis imagined standing in the middle of AdS space-time, which would be like standing inside a giant ball whose edge or boundary ...
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3answers
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Does it actually take infinite (observer) time for someone to fall into a black hole?

If you were to watch your friend approach a black hole, I understand that you'd see their clock slow until they appear frozen and redshift within a few seconds. But if you were to detect the ...
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2answers
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Fran De Aquino's theories on gravity and electromagnetism; reputable? [closed]

I've been transiently interested in the research of a Brazilian physicist named Fran De Aquino. The majority of his papers are related to gravity manipulation, which raises a lot of red flags. This ...
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Help at dismissing a time dilation “paradox” [duplicate]

If Observer A moves at speed $v$ respect to observer B, then there is a time dilation given by $$t_B=t_A\gamma$$ as is known from special relativity. Here, $t_A$ is the time interval measured by A ...
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2answers
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Disintegrating as you enter a large black hole, instead of experiencing what's inside?

I'm having trouble reconciling these three things I've heard about black holes: If you fall into a sufficiently large black hole, you won't experience anything in particular when crossing the event ...
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3answers
98 views

“Micro” explanation for time dilation? [duplicate]

I understand the explanation, for example, about a light beam reflecting between two mirrors on the space craft. But what I am looking for is what aspect of traveling at very high velocities must slow ...
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1answer
57 views

Special relativity and biology of human

There is something I do not understand and its pretty bother me, if I have a twin and we both in our 20's now lets assume I take a trip to space close to the speed of light, when I will come back I ...
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1answer
74 views

Is time dilation derivable from (non-) simultaneity?

My friend, Nima Fathali, used to claim that the fact time dilation can be deduced from the (non-) simultaneity though I used to claim otherwise saying that these two qualities are independent of each ...
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9answers
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Twins Paradox: Why is one frame considered to be the accelerating frame

Let me start by saying I understand the Mathematics behind the twins paradox and how it is resolved. I understand that due to the acceleration of one twin, time from their subjective experience is ...
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3answers
135 views

Do gravitational waves cause time dilation or not?

There are a lot of questions on this site about gravitational waves and time dilation, and some of the answers are contradictory. I have read this question: Do gravitational waves cause time ...
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1answer
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Time dilation in 2+ dimensions. Relativity problem

I am a student and due to school closures, I am reading ahead in physics. I have been learning about special relativity and I made up a problem for myself. I've drawn a diagram below: The diagram ...
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3answers
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Why don't these conversions of time between reference frames seem consistent? [closed]

I am a student and due to school closures I am reading ahead in physics. I have been learning about relativity and I made up a problem for myself. You can see a diagram that I drew below: The diagram ...
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2answers
124 views

What is the physical interpretation of the equation for the invariant interval in general relativity?

In my GR lecture I was given the following equation for the spacetime interval (signature $(+,-,-,-)$): $$ ds^2=(1+\frac{2\phi}{c^2})c^2 \, dt^2-(1-\frac{2\phi}{c^2})\delta_{ij}\, dx^{i}dx^{j} \tag{1}...
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1answer
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How is time defined in time dilation?

It appears that there are two different concepts of time dilation (in my amateur point of view): Time delation due to relative velocity. Let‘s say a second is measured by the time it takes for light ...
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1answer
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I have a couple of questions regarding the physics of planet Miller and the black hole it's orbiting from the movie “Interstellar” [closed]

I watched the movie and thoroughly enjoyed it. I had a couple of questions regarding the physics, so I looked for answers. I got them, but I was left even more questions. I know that a lot of these ...
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2answers
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I am aware its not possible. Hypothetically How would you stop? if You find yourself in a spaceship travelling at almost the speed of light? [closed]

assumptions made : Somehow you find yourself travelling at almost the speed of light. No other external force is acting on you and you are travelling in the same direction. I mean, How would you ...
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1answer
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Time dilation formula vs Lorentz Transformation with light signal

I'm confused about when to properly use the time dilation formula $\Delta \tau=\frac{\Delta t}{\gamma}$ or the Lorentz transformation $c\Delta t = \gamma (c\Delta t-\beta \Delta x)$, especially when ...
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1answer
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Trouble with conflicting results for time dilation for two sets of events [closed]

I was just trying to calculate the time dilation for two sets of events using the Lorentz-Transformation. (I'm trying to understad the special theory of relativity at the moment - I mean what better ...
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33 views

Time dilation to speed an experiment

I don't know a lot about special or general relativity, but I was always intriguing about the time dilation effects that it provokes and I always tought, it is possible to use this effect to increase ...
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0answers
21 views

Gravitational time dilation using accelerating light-clock

I've been trying to understand gravitational time dilation by considering a light-clock of length $l$ undergoing an equivalent acceleration $a$ from rest along the direction of the bouncing light ...
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1answer
46 views

Time dilation Vs Time duration Or watching a movie at the speed of light

I am not a physicist but a physics enthusiast and while trying to understand time dilation I came up with this thought experiment in order to understand things better based on the answers to my 2 ...
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4answers
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Symmetry in time dilation in special relativity [duplicate]

This question is related to this Time between two observer in special relativity. Suppose we have to observers, $A$ and $B$ so that when they are a distance $d=c\tau$ from each other measured by ...
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5answers
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Time between two observer in special relativity [duplicate]

Let $A$ and $B$ be two observers and suppose they meet when both their clock are zero. Suppose that $B$ moves with constant velocity $v$ in relation to $A$ then we have $$t=\frac{1}{\sqrt{1-\...
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1answer
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Would the effect of time dilation alone cause the same existing known precession advance of the perihelion of say, Mercury?

Or does this advance also require the bending of space to arrive at the same outcome. In other words if there were no bending of space would the effect of time dilation alone cause an equivalent ...
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Simultaneity of events in earth's surface

Imagine an observer on a satellite 40000km above the earth's surface and also two different locations on the surface of the earth. The clock of the observer on the satellite runs faster from the ...
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1answer
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Doubt on Twin Paradox and Time Dilation

Recently I have been trying to understand the Special Relativity and Time Dilation. From, my understanding, if a person is moving with a constant velocity "v" with respect to a person not moving then ...
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1answer
52 views

Time dilation and newton experiment

If I drop a ball from h it will take T time to reach ground now I drop the ball in a moving train from the same h this time the ball will go through a bigger path to reach the ground but time is ...
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0answers
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Does a relativistic rocket lead to time dilation in the space surrounding the rocket?

This question was asked a few years ago, but I'm looking for more complete answers. And of course I recognize that any dilation effects would be extremely small. If a rocket is traveling at ...
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3answers
97 views

Special theory of relativity - Lorentz transforms

I have been reading about the STR & my first problem came very much in the beginning. So, as per the simplest form of the Lorentz transforms, we have $$x' = (x - vt)\gamma \tag{1.1}$$ $$t' = (t ...
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How to reach a singularity? [duplicate]

In the instant a singularity tries to form, it simultaneously would try to create a infinite density/gravity/time well. This raises a doubt in my mind that the singularity ever does actually form, ...
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0answers
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On the change in half-life of tritium traveling at near $c$ in a cyclotron

Barring physical effects I do not know about, I would expect that the beta decay of tritium of about 12.32 years to increase by the time dilatation accorded to its increased mass while traveling in a ...
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1answer
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Does the effect of gravity get slower at high speeds?

If a sentient object was vibrating at near light speed and was some distance off the ground. Compared to being relatively stationary to the ground, would it take a longer while for them to fall down ...
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0answers
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Lorentz and Selleri transformations equivalence for proper time measurements

Assume the "standard" 1-axis plus time setup with 2 reference frames S0 and S1, moving with respect to each other with velocity v along x axis. Assume to have synchronized fixed clocks in both frames ...
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0answers
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Growing black holes and eternally falling objects

What happens to objects falling to a black hole (from outside observer's perspective)? There seem to be a consensus that because of time dilation, an object's fall towards event horizon will take a ...
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4answers
249 views

How would Special Relativity work if the universe were periodic? [duplicate]

Okay, this may sound quite stupid, but I am currently learning special relativity in my physics class (2301 OSU). So since both frames assume that their frame is stationary and that time in all other ...
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1answer
39 views

For which one of two bodies that have different velocities the time passes slower?

We were told that velocities are relative so there is no absolute speed.How in that case explain that one of two moving objects has its time ticking slower?
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Does time dilation mean an object moving faster advances faster in time? [duplicate]

I tried to read a bit about relativistic time dilation, but the maths and complex physics overwhelmed me, confused me -I'm not trained in this field beyond common divulgation and basic education, and ...
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1answer
75 views

Travelling to the future while seemingly standing still?

Some time ago I thought about this possibility, knowing about the time dilation from general relativity. What would theoretically happen if I travelled at near the speed of light in a circle that has ...
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1answer
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For which object is time dilation, actually (absolutely) happening? [duplicate]

So, am I supposed to accept the fact the time dilation may not just be a relative effect, as in: it's just as an illusion, but rather, the time that is elapsing for me is actually $\gamma$ times the ...
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1answer
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Gravitational time dilation in weak field

A plane flies at a constant height $h$. I should calculate, which speed $v$ the plane shoud have, such that an observer on ground sees the a clock whithin the plane tick in the same rate as a clock on ...
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1answer
103 views

How much should the gravitational force increase to make 8 hours feels like 300 years? [closed]

How much should the gravitational force increase to make 8 hours feels like 300 years?
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2answers
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About the derivation of the time dilation

I'm referring to the common example of deriving time dilation from the light clock. Let O be standing still with his light clock and O' move at a speed of u. We consider the O measures his time as $...
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2answers
58 views

Confusion about time dilation proof using Lorentz Transformation

For Length Contraction using Lorentz Transformation, we use the condition that from the 'Fixed frame' (in the following image) the length of the object was measured simultaneously (i.e. t1 = t2 ). I ...
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2answers
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Time in Universe Chronology - Duration of inflation period

When you read articles about the chronology of the Universe, you read for example that the duration of the inflation era is roughly $10^{-32}$s. We also know Universe expansion causes a redshift ...
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2answers
47 views

Are there any effects time dilation, kinetic or gravitational, has on modern physics and the modern world?

So, I am writing a paper on time dilation and I am basically done with everything, but in the last chapter, I should include which aspects of the modern world and physics are specifically influenced ...
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2answers
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Maximum proper time in Minkowski Spacetime for free particles

Consider two events $\mathcal{A}$ and $\mathcal{B}$ corresponding to the beggining and the ending of trajectories of two massive particles, respectively. The particle named $\mathcal{P1}$ is in free ...
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1answer
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Black hole dilation for space exploration

Just curious, if you could contain a small black hole, such as has been theorized possibly occurring after the period of rapid expansion, curious if the local time dilation from the proximity of mass ...
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1answer
80 views

Special Relativity: Time dilation for two events happening in different positions both in $S$ and in $S'$

In the derivation of the time dilation formula in Special Relativity, I have been taught that the position at which times are measured must be the same in one of the two reference systems: $S$ (which ...
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4answers
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Speed of light, why is it about time dilation?

I've watched several video's on this topic but I've never seen the relation between actual time and the "time dilation" that is happening. As an example this video, start around 6 minutes and 27 ...

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