My Retirement Plan At 35

(18-07-2012, 08:28 AM)pianist Wrote: hi momoeagle,
side-chat about physics since u said u specilaise in that, is it true that a returning astronaut from outer space is actually living behind earth time?

Kaypo first b4 expert comes in.

Time is not absolute for every observer. The "time" I see and the "time" you see are different.
It happens everyday, every moment if you are moving with respect to each other. It just that the effect is so small and negligible unless you are moving closed to speed of light.
For more info, can refer to special relativity by Albert Einstein.

You can imagine yourself moving away from a clock at the speed of light. Will the clock move?

(18-07-2012, 08:28 AM)pianist Wrote: hi momoeagle,
side-chat about physics since u said u specilaise in that, is it true that a returning astronaut from outer space is actually living behind earth time?

u meant to ask about anti-ageing effects?

earth time is just a numerical representation of rotation of the earth + standardization scale for counting time...

(18-07-2012, 09:11 AM)yeokiwi Wrote:

(18-07-2012, 08:28 AM)pianist Wrote: hi momoeagle,
side-chat about physics since u said u specilaise in that, is it true that a returning astronaut from outer space is actually living behind earth time?

Kaypo first b4 expert comes in.

Time is not absolute for every observer. The "time" I see and the "time" you see are different.
It happens everyday, every moment if you are moving with respect to each other. It just that the effect is so small and negligible unless you are moving closed to speed of light.
For more info, can refer to special relativity by Albert Einstein.

You can imagine yourself moving away from a clock at the speed of light. Will the clock move?

I also keypo here

My answer is Yes, but with a negligible amount.

I had read a related article. Astronaut is aging slower in space station travelling at high speed, but negligible since it is still much slower than light speed

(18-07-2012, 09:40 AM)CityFarmer Wrote:

(18-07-2012, 09:11 AM)yeokiwi Wrote:

(18-07-2012, 08:28 AM)pianist Wrote: hi momoeagle,
side-chat about physics since u said u specilaise in that, is it true that a returning astronaut from outer space is actually living behind earth time?

Kaypo first b4 expert comes in.

Time is not absolute for every observer. The "time" I see and the "time" you see are different.
It happens everyday, every moment if you are moving with respect to each other. It just that the effect is so small and negligible unless you are moving closed to speed of light.
For more info, can refer to special relativity by Albert Einstein.

You can imagine yourself moving away from a clock at the speed of light. Will the clock move?

I also keypo here

My answer is Yes, but with a negligible amount.

I had read a related article. Astronaut is aging slower in space station travelling at high speed, but negligible since it is still much slower than light speed

Non expert opinion again...
We can see the clock moves because the light from the clock reaches our eyes.
So, if you are travelling at speed of light away from clock, can the light reach you?
Now, moving one step lower, if you are moving close to speed of light, 99.999% of the speed of light, how will the clock look like to you?

(18-07-2012, 09:51 AM)yeokiwi Wrote:

(18-07-2012, 09:40 AM)CityFarmer Wrote:

(18-07-2012, 09:11 AM)yeokiwi Wrote:

(18-07-2012, 08:28 AM)pianist Wrote: hi momoeagle,
side-chat about physics since u said u specilaise in that, is it true that a returning astronaut from outer space is actually living behind earth time?

Kaypo first b4 expert comes in.

Time is not absolute for every observer. The "time" I see and the "time" you see are different.
It happens everyday, every moment if you are moving with respect to each other. It just that the effect is so small and negligible unless you are moving closed to speed of light.
For more info, can refer to special relativity by Albert Einstein.

You can imagine yourself moving away from a clock at the speed of light. Will the clock move?

I also keypo here

My answer is Yes, but with a negligible amount.

I had read a related article. Astronaut is aging slower in space station travelling at high speed, but negligible since it is still much slower than light speed

Non expert opinion again...
We can see the clock moves because the light from the clock reaches our eyes.
So, if you are travelling at speed of light away from clock, can the light reach you?
Now, moving one step lower, if you are moving close to speed of light, 99.999% of the speed of light, how will the clock look like to you?

Non-expert opinion

When you are moving in a space station travelling close to speed of light. You will still see the clock in the space station behave normally. But the clock in earth is almost stop clicking. In simple term, you will grow older much slower than others in earth.

It is totally out of my imagination how it look like when you are looking at a clock in earth via window of the space station

(18-07-2012, 06:38 AM)KopiKat Wrote: Yes, a very great speech and very relevant. I extract from each story,

1. Again, you can't connect the dots looking forward; you can only connect them looking backwards. So you have to trust that the dots will somehow connect in your future. You have to trust in something — your gut, destiny, life, karma, whatever. This approach has never let me down, and it has made all the difference in my life.

2. You've got to find what you love. And that is as true for your work as it is for your lovers. Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it. And, like any great relationship, it just gets better and better as the years roll on. So keep looking until you find it. Don't settle.

3. Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma — which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

Wow thanks. This guy knows what he is talking about, very inspirational!

(18-07-2012, 09:58 AM)Janjansen Wrote:

(18-07-2012, 06:38 AM)KopiKat Wrote: Yes, a very great speech and very relevant. I extract from each story,

1. Again, you can't connect the dots looking forward; you can only connect them looking backwards. So you have to trust that the dots will somehow connect in your future. You have to trust in something — your gut, destiny, life, karma, whatever. This approach has never let me down, and it has made all the difference in my life.

2. You've got to find what you love. And that is as true for your work as it is for your lovers. Your work is going to fill a large part of your life, and the only way to be truly satisfied is to do what you believe is great work. And the only way to do great work is to love what you do. If you haven't found it yet, keep looking. Don't settle. As with all matters of the heart, you'll know when you find it. And, like any great relationship, it just gets better and better as the years roll on. So keep looking until you find it. Don't settle.

3. Your time is limited, so don't waste it living someone else's life. Don't be trapped by dogma — which is living with the results of other people's thinking. Don't let the noise of others' opinions drown out your own inner voice. And most important, have the courage to follow your heart and intuition. They somehow already know what you truly want to become. Everything else is secondary.

Wow thanks. This guy knows what he is talking about, very inspirational!

Yes, otherwise we will not enjoy the fun of iPod, iPhone and iPad

Non expert but fan of documentaries

Time is fractionally slower the further we away from the ground, and
its also fractionally slower when we are in a speeding vehicle than stationary.

Is that why men love to stay at penthouses, work on the top floor, and drive fast cars?

(18-07-2012, 08:28 AM)pianist Wrote: hi momoeagle,
side-chat about physics since u said u specilaise in that, is it true that a returning astronaut from outer space is actually living behind earth time?

This is from H3 physics which I don't teach, but is part of junior physics olympiad which I teach :p

From the Special Theory of Relativity by Einstein, objects in a faster moving frame would experience something called time dilation. That means, time travels slower relative to us. To put it simpler, if we on Earth are considered as a stationary frame, the astronaut in orbit will be considered as in a moving frame. In time dilation, 1 second to the astronaut is probably 1.5 or more seconds to us on Earth, so yes, in fact, the astronaut having aged a day in orbit would be equivalent to us aging more than a day on Earth.

However, such theory applies mainly when they are travelling at speeds near to the speed of light, termed as c. If we calculate the orbital velocity of the astronaut, it's only at 3000 m/s (0.00001c), which is far from the speed of light (velocity on earth's surface is 480 m/s)

Being so far away from the speed of light, while astronauts in orbit may age slower, the difference, if any, will be insignificant.

(18-07-2012, 09:58 AM)CityFarmer Wrote: Non-expert opinion

When you are moving in a space station travelling close to speed of light. You will still see the clock in the space station behave normally. But the clock in earth is almost stop clicking. In simple term, you will grow older much slower than others in earth.

It is totally out of my imagination how it look like when you are looking at a clock in earth via window of the space station

If you have not read special relativity before, you are real good.
Einstein figured out all this in the brain. The beauty of thought experiment.
Special relativity is still ok. General relativity is much much harder to understand.
Quantum theory is absurd but the experiment data simply prove that the world is indeed run by probability.

Very interesting and classic experiment that no other theory except QT can explain it.
http://www.hitachi.com/rd/research/em/doubleslit.html

Real real absurd...