Physics/Relativity Question

[Nakosis]

Ok, here's the familiar scenario;

Two people starting out on earth. One travels to a star system far away at close to the speed of light and returns. The person who traveled and returned will have aged slower because of the speed they traveled.

However, isn't speed relative to the observer? So if we see the observer in the rocket ship as the one stationary isn't the person who stayed on earth actually the one speeding away from the person in the rocket.

Or lets take away the earth. Just two people in space. One moves away from the other at close to the speed of light. The distance between them is increasing equally between both. From either observer, the other is traveling away from them at close to the speed of light. Which one ages faster?

I'll assume the answer is dependent on which one force is being applied to. So is time dilatation dependent on the force being applied?

I guess this works for mass. The closer you are to the center of mass the greater amount of force is being applied to you. I.E. a greater amount of force is being applied to your feet than your head while you are standing on the surface of the earth. So over a life time your feet will have aged slightly faster than you head.

So is it safe to say that it is the application of force which dilates time not the relative speed?

 

[Revoltingest]

One difference is acceleration.

 

[wellwisher]

Ok, here's the familiar scenario;

Two people starting out on earth. One travels to a star system far away at close to the speed of light and returns. The person who traveled and returned will have aged slower because of the speed they traveled.

However, isn't speed relative to the observer? So if we see the observer in the rocket ship as the one stationary isn't the person who stayed on earth actually the one speeding away from the person in the rocket.

Or lets take away the earth. Just two people in space. One moves away from the other at close to the speed of light. The distance between them is increasing equally between both. From either observer, the other is traveling away from them at close to the speed of light. Which one ages faster?

I'll assume the answer is dependent on which one force is being applied to. So is time dilatation dependent on the force being applied?

I guess this works for mass. The closer you are to the center of mass the greater amount of force is being applied to you. I.E. a greater amount of force is being applied to your feet than your head while you are standing on the surface of the earth. So over a life time your feet will have aged slightly faster than you head.

So is it safe to say that it is the application of force which dilates time not the relative speed?

Relative reference is an optical illusion; fools the eye. It appears when you do not know who has the energy of motion; kinetic energy. This allows you to assume either; relative. They will look and calculate as relative.

One of the original experiments to verify Special Relativity and time dilation was using radioactive isotopes in a particle accelerator. The half life is the amount time for 1/2 the material to radioactive decay. This time interval, which is like clockwork, slowed down; longer half life; moving twin, in these experiments.

The extra radioactive material, in a beaker nearby, not moving, which would be the relative reference, retained the original half life; twin left behind. Until that experiment ended, everyone could pretend. Relative reference is a liability, when looking out at space, since we cannot tell who has the kinetic energy in an absolute sense. Movement becomes more subjective.

With motion and velocity, particles have kinetic energy, which has the formula Ek=1/2MV2, where Ek is kinetic energy, M is mass and V is velocity.

Einstein also developed his famous equation E=MC2. This is tells us how much mass or energy we can get if we convert rest mass to energy or energy to rest mass. It is the equivalence of mass and energy; exchange energy value. This was used to calculate the energy from the mass burn in nuclear reactions; fusion.

If we put the Kinetic energy equation; Ek=1/2MV2 and E=MC2 side by side, notice they look very similar. They differ by 1/2 versus 1. At relativistic velocity, and V approaches C (V--->C). there appears to be a conversion from kinetic energy into mass, but a type of virtual mass that is only a fraction of the expected rest mass; less than 1/2. This is called relativistic mass.

This is not the same as rest mass, which contains the full energy equivalent. This is partial state of virtual mass that is connected to the energy within the motion. This appears to also be able slow time, but unlike rest mass and gravity that can reach out to infinity, Relativistic Mass is closer acting in terms of impact; just the moving twin or object.

This conversion appears to be connected to time and distance potential; V=d/t, where V close to C, is shifting into relativistic mass, leaving less time and distance potential, remaining to do the job; space-time; slows and contracts.

Relativistic mass + modified space-time reference (moving twin)= Stationary space-time reference (stationary twin).

In the case of the radioactive isotope; relativistic mass + slowed half life =normal half life.

 

[Nakosis]

Relative reference is an optical illusion; fools the eye. It appears when you do not know who has the energy of motion; kinetic energy. This allows you to assume either; relative. They will look and calculate as relative.

One of the original experiments to verify Special Relativity and time dilation was using radioactive isotopes in a particle accelerator. The half life is the amount time for 1/2 the material to radioactive decay. This time interval, which is like clockwork, slowed down; longer half life; moving twin, in these experiments.

The extra radioactive material, in a beaker nearby, not moving, which would be the relative reference, retained the original half life; twin left behind. Until that experiment ended, everyone could pretend. Relative reference is a liability, when looking out at space, since we cannot tell who has the kinetic energy in an absolute sense. Movement becomes more subjective.

With motion and velocity, particles have kinetic energy, which has the formula Ek=1/2MV2, where Ek is kinetic energy, M is mass and V is velocity.

Einstein also developed his famous equation E=MC2. This is tells us how much mass or energy we can get if we convert rest mass to energy or energy to rest mass. It is the equivalence of mass and energy; exchange energy value. This was used to calculate the energy from the mass burn in nuclear reactions; fusion.

If we put the Kinetic energy equation; Ek=1/2MV2 and E=MC2 side by side, notice they look very similar. They differ by 1/2 versus 1. At relativistic velocity, and V approaches C (V--->C). there appears to be a conversion from kinetic energy into mass, but a type of virtual mass that is only a fraction of the expected rest mass; less than 1/2. This is called relativistic mass.

This is not the same as rest mass, which contains the full energy equivalent. This is partial state of virtual mass that is connected to the energy within the motion. This appears to also be able slow time, but unlike rest mass and gravity that can reach out to infinity, Relativistic Mass is closer acting in terms of impact; just the moving twin or object.

This conversion appears to be connected to time and distance potential; V=d/t, where V close to C, is shifting into relativistic mass, leaving less time and distance potential, remaining to do the job; space-time; slows and contracts.

Relativistic mass + modified space-time reference (moving twin)= Stationary space-time reference (stationary twin).

In the case of the radioactive isotope; relativistic mass + slowed half life =normal half life.

What I've read is that acceleration causes time dilation... ok.
When the acceleration ends, i.e. we've reached a constant state of velocity, the time dilation caused by the acceleration itself stops.
However, mass is relative to velocity. So the difference in velocity leaves the object to which the force was applied, moving faster relative to the "stationary" object now has greater mass. The greater the mass an object has the greater time dilation experienced by that object.