Would The Mind Be Affected By Time Dilation?

[little_monkey]

Originally Posted by rojse

Considering that our local galaxy is travelling at a rate of 600,000m/s, why are we not flattened now?

The speed of light is 3x10ˆ8 m/s. Our galaxy at 6x10ˆ5 m/s, that's 1/5 of 1% -- too negligible for relativistic effect.

[little_monkey]

Originally Posted by Panda

No you got it wrong. When looking at this problem we have to take into account kinetic energy (Ek=1/2mv^2 or kinetic energy = half * mass * velocity squared). When we increase the speed of something we are really increasing the kinetic energy but since the mass stays constant only the speed increases. However since there is a universal speed limit (speed of light = 3*10^8ms^-2) nothing can go faster than this so when we try to increase our kinetic energy at the speed of light the energy turns into mass (E=mc^2 shows energy and matter are the same thing). So we don't actually get flattened what actually happens if we increase in mass.

Your point also isn't valid because time dilation begins to have a noticeable effect at speeds greater than 1/3 the speed of light.

I did say near lightspeed, and that WOULD be greater than 1/3 the speed of light, right!!!

Besides the effect you have described -- an increase in mass --the effect that I described is length contraction, which a well-known relativistic effect.

[Engyo]

Originally Posted by Panda

Here we get to a problem. We are moving at this speed in reference to what? If a spaceship moves away from earth at half the speed of light the Earth is also moving away from the spaceship at half the speed of light, which one would experience the time dilation? This is a question no one seems to know the answer to.

Another issue that will require testing, which we haven't quite achieved capability for as of yet.

[Panda]

Originally Posted by little_monkey

I did say near lightspeed, and that WOULD be greater than 1/3 the speed of light, right!!!

Yes you said near light speed but near light speed is not required for time dilation.

Originally Posted by little_monkey

Besides the effect you have described -- an increase in mass --the effect that I described is length contraction, which a well-known relativistic effect.

I thought you meant flattened, as in squashed but you meant elongated.

[little_monkey]

Originally Posted by Panda

Here we get to a problem. We are moving at this speed in reference to what? If a spaceship moves away from earth at half the speed of light the Earth is also moving away from the spaceship at half the speed of light, which one would experience the time dilation? This is a question no one seems to know the answer to.

But how would you know this? You would need to perform some measurements. You, on planet earth, would need two clocks -- one here on Earth, and another at the final destination where the spaceship is heading for. But, the person in the spaceship would be carrying a moving clock, and it would be his clock that would undergo time dilation.

[little_monkey]

Originally Posted by Panda

Yes you said near light speed but near light speed is not required for time dilation.



I thought you meant flattened, as in squashed but you meant elongated.

At near lightspeed, you would contract, you would look like a pancake.

Near lightspeed is not required, but at very slow speed, time dilation would be too small to measure it.

[Panda]

Originally Posted by little_monkey

But how would you know this? You would need to perform some measurements. You, on planet earth, would need two clocks -- one here on Earth, and another at the final destination where the spaceship is heading for. But, the person in the spaceship would be carrying a moving clock, and it would be his clock that would undergo time dilation.

No the problem is velocity is a relative term. To define one as stationary you have to have a frame of reference for it. On Earth this is easy because we view the ground as stationary and measure velocity from that. In space there is no such thing. The Earth is moving at 1/2c relative to the rocket and the rocket is moving 1/2c relative to the Earth.

[Panda]

Originally Posted by little_monkey

At near lightspeed, you would contract, you would look like a pancake.

Ahh yes you are correct.

Originally Posted by little_monkey

Near lightspeed is not required, but at very slow speed, time dilation would be too small to measure it.

Yes time dilation is always in effect yet below 1/3c is it null.

[little_monkey]

Originally Posted by Panda

No the problem is velocity is a relative term. To define one as stationary you have to have a frame of reference for it. On Earth this is easy because we view the ground as stationary and measure velocity from that. In space there is no such thing. The Earth is moving at 1/2c relative to the rocket and the rocket is moving 1/2c relative to the Earth.

Relativity does not work the way you want it to. To calculate these velocities, you would need to apply the Lorentz transformation equations. You would need to know which coordinate system carries the moving clock, and which doesn't. In the scenario you have chosen, the person in the spaceship would carry the moving clock. You, on Earth, would need to have two clocks to make the measurement. Hence by the conditions in your scenario, the person in the spaceship would undergo time dilation.