Time dialation Definition and 72 Threads

First off, I'd like to point out that I am by no means an expert in this area, and I am only doing some casual research as a personal interest topic, and have some further unanswered questions that I'm unable to find reasonable answers for. These questions are all inter-related, so I'll post...

An astronaut is traveling at a constant speed of 2.40x10^8 m/s relative to Earth through space. according to timing devices aboard the space vehicle the trip took 1.25 years. how long did the trip last if measured relative to earth HELP PLEASE!

Hi, I believe the general notion is that gravity is an effect caused by the warping of spacetime. I've read that clocks are running faster in Satellites by about 50 micro seconds per day (or 2 micro seconds per hour) compared with on the Earth's surface. As one moves from the Satellite...

Right, it's been a long time since I've done anything physics related, and I've never been an expert to begin with, just a level standard, but was having a bit of a chat with a friend earlier and wanted to see if what we were saying makes any sense atall? We were having a bit of an...

If you where going to use a ship to go 99.999999% of the speed of light, for one hour of non dilated time, how much fuel would you carry? enough to keep your ship going for the amount of dilated time or non dilated time. (sorry for the badly worded question.)

Let events 1 and 2 occur at and in frame S. In frame S' they occur at https://www.physicsforums.com/latex_images/18/1880804-3.png https://www.physicsforums.com/latex_images/18/1880804-3.png [PLAIN]https://www.physicsforums.com/latex_images/18/1880804-4.png...

The gravitational force is zero at the center of a planet, but the GPE is at a peak minimum (most negative). What happens to the time dilation factor inside the surface of a planet of uniform density versus at the surface of that planet.?

i'm revising for an exam and have this question posed (this isn't homework) what is the maximal velocity for a clock being transported from london to new york if the time difference to a stationary clock should be less than 10^-8 seconds. i'm not allowed to use calculators. i've tried...

Imagine someone is traveling in space, very fast past me in a spaceship. We both observe each others clock's running slower than our own, and by the same rate as well, as our relative velocities to each other are equal. So say that spaceship slowed down to zero, and then the clocks were...

i have read about the experiment of people ageing slower when moving at velocity and don't quite understand. here's my experiment: two people, person A and B, start off in the same referance frame (both are, say 20yrs old). person A flies off in one direction and person B in another. they...

Can someone give me a simple derivation of the ux/c^2 in the numerator of the Lorentz time contraction equation? u = relative velocity Why isn't the equation just (t-x/c)/gamma because of the time delay in light going from x to O. I am guessing because the source is moving away from O...

Exactly how much does Earth's time dilation decrease with distance from the surface? I know that it's way to small to ever notice and probably even mesure with today's instruments, but I'm trying to calculate how many billionths or trillionths [or less] of a second a clock might run faster if...

I'm going to state that two inertial bodies that close distance on each other will (becouse of loss of simultaneity)observe time dilation. Also i will state that when one body accelerates it will actually time dilate from its frame of origin. So with this stated, if a rocket traveling under...

see the attchments Referring to fig 1 We have a clock that is used to set the time on a second clock. At point A is a laser. At B there is a photon detector. The laser at A fires a photon, shown as the red broken line. The photon makes its way from point A to point B. At A there is also...

time dilation is a function of only velocity ie if you are traveling @ C in any direction time stops yes? Time dilation is not dependent on any other parameter other than velocity?

[SOLVED] Time Dialation Help Homework Statement A bomb is placed on a space probe just before it's launched. The timer is set to trigger the bomb after exactly 24hrs. The probe travels away from Earth on a straight line at v=.9c. How long after launch will the observers on the Earth see the...

I understand that clocks move slower as they approach c. I also understand that clocks move slower on more massive bodies. My question is are these two phenomena consistant and cumulative? For example. We have two masses of significantly differeing masses and both have clocks on...

I understand that a clock on the surface of the Earth is observed to run more slowly than a clock in orbit or a clock "at infinity". What about a clock situated at the center of the earth. Would it be slowed because of the concentration of mass? Or would it run normal speed because there is no...

hello everyone, to start off, I'm in no way a physics expert but I think I understand time dialation. for all of this, use the sun as a reference frame. I was reading a thread on here and I thought of something. I'm pretty proud of myself for thinking of this but I would like someone with more...

Hi I was wondering about how fast do you have to go before time dilation comes into effect P.S. I'am no Qauntum physics professor so I don't know a lot about relativity

I was reading some interesting articles at wikipedia on black holes and time dialation: http://en.wikipedia.org/wiki/Black_hole http://en.wikipedia.org/wiki/Time_dilation I remember this subject interested me greatly when I was in high school physics. I'm pretty rusty now, so bear with...

could someone tell me the formula to figure out how much relative time speed difference there is between two or more objects of unequal mass?