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[IO9] Spacetime invisibility cloaks can hide entire events inside temporal voids - Page 13

post #121 of 139
Quote:
Originally Posted by Siigari View Post
I don't understand a lot of things in this thread. The OP sounds cool by the way, but bear with me:

Me and my girlfriend are both at home. I leave on a trip to go from Oregon to California and am traveling at 80 MPH (where legal ;3) and make the trip and return home. Who has aged more? The answer is we have both aged at the same rate.

Now, me and my girlfriend are both home. I take a ship to Alpha Centauri at .5 light speed and return. Who has aged more? Neither; we are still bound within the confines of linear time.

Right?
The faster you travel with respect to another object(the ground in this case), the slower time passes for you. Therefore you will age slightly slower than someone standing still. It's an amount you can't ever measure or notice yourself traveling at only 80mph though. If you were traveling close to the speed of light though, then you might want to consider it.
post #122 of 139
Are you people idiots(not @everybody obviously, just the idiots)? This has nothing to do with any manipulation of time. Your eyes see things when light travels from the object to your eyes. Theres a lag time, to the moon its about 1 second.. under for anything closer.

All this is, is slowing down light. We can ALREADY do that by sending it through super-dense matter. So, in theory, you slow down the light to 60mph while standing a mile away.. the person sees you where you were a minute ago. Because when you slow it down to that speed it gives you a minute before the light travels from you to the person observing. When you speed it back up, he then sees your normally. Give you, essentially and in theory, a minute unobserved.

There are no 'frozen people' you're running by. You're not passing through alarms undetected. It's essentially the same as doing something in complete darkness and putting up an illuminated cardboard cutout in front of you.
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post #123 of 139
Deodanth technology

...you are free-falling 8km towards the ground; just before impact (literally mm's from the ground surface), you activate your space-time cloak; do you make it?
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post #124 of 139
If by make it, you mean live, then no. Will anyone see you hit the ground? No, as long as it somehow deactivates afterwards and anyone looking was far enough away. You didn't change time, you only slowed down the photons heading towards the witnesses eyes viewing you.

Quote:
Originally Posted by Celeras View Post
You're not passing through alarms undetected
If you could perfect the technology to slow time down enough, you could walk past people and the photons being absorbed and reflected back by your cloak would be so slow they'd never hit the person's eyes.

If it also sent back false photons from the other side of you that were captured and remitted towards the viewer, it would look like there was nothing there. Techniques such as this are being tested for stealth planes which emit and image of the sky above the plane towards the ground making it appear as if there is nothing there.
Edited by PoopaScoopa - 4/24/11 at 7:41am
post #125 of 139
This would function as nothing more than a simple visibility cloak, it would not shield emissions of radiation, sound waves or kinetic energy of any kind, it is solely based around the manipulation of photon particles.

Edit:
And no, it would not slow time down, time would still pass at the same rate, but from a relative standpoint, say someone in a helicopter a few hundred meters above observing, would not be able to observe the event inside the "cloak", at least not through the visual spectrum of the human eye.
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post #126 of 139
Maximum cloak.

Does it run out of energy?
post #127 of 139
Hell yeah, women's showers.
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post #128 of 139
Quote:
Originally Posted by PoopaScoopa View Post
The faster you travel with respect to another object(the ground in this case), the slower time passes for you. Therefore you will age slightly slower than someone standing still. It's an amount you can't ever measure or notice yourself traveling at only 80mph though. If you were traveling close to the speed of light though, then you might want to consider it.
No. That is the english major version of this.

Here is the first things you need to know and accept:

1. Different velocities have different inertial frames of reference. A man at 30 mph has his own inertial frame of reference while a man at 0mph is in his own frame of reference.

2. There is no 'correct' frame of reference. Both are valid and true.

3. A person at constant motion that looks out the window of a vehicle does not perceive himself to be in motion but the world around him to be in motion, according to his point of view he is standing still.

4. If an observer sees something outside of his frame of reference moving then events happening in that thing appear to be happening more slowly then in his own frame of reference.

So take for example bob and bill. They both have fully charged android phones which'll last for precisely eight hours. Bob is on a spaceship going at .9C (C=speed of light, .9=90%, so 90% the speed of light).

Since bill is on the ground he sees that bob is in motion and that time passes more slowly for him. So according to bill, bob's android will last longer then his will.

But according to bob on the space ship he is not in motion but rather the world around him is, and so bill is in motion. According to bob, bill's android will last longer then his own will.

According to science fiction writers everywhere, the point of reference that is always correct is the one on a planet, which is far from correct. There is no preferred point of reference. So both Bill and Bob are correct, despite the apparent paradox.
    
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post #129 of 139
Quote:
Originally Posted by Celeras View Post
Are you people idiots(not @everybody obviously, just the idiots)? This has nothing to do with any manipulation of time. Your eyes see things when light travels from the object to your eyes. Theres a lag time, to the moon its about 1 second.. under for anything closer.

All this is, is slowing down light. We can ALREADY do that by sending it through super-dense matter. So, in theory, you slow down the light to 60mph while standing a mile away.. the person sees you where you were a minute ago. Because when you slow it down to that speed it gives you a minute before the light travels from you to the person observing. When you speed it back up, he then sees your normally. Give you, essentially and in theory, a minute unobserved.

There are no 'frozen people' you're running by. You're not passing through alarms undetected. It's essentially the same as doing something in complete darkness and putting up an illuminated cardboard cutout in front of you.
Actually, he will be able to observe what you did. You see, this machine would slow down light. That means that when the cloaked person moves he is still sending out light, but at 60mph.

The image would take longer to reach the observer's eyes, but other then that it is unmodified.
    
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post #130 of 139
Quote:
Originally Posted by Singular1ty View Post
No. That is the english major version of this.

Here is the first things you need to know and accept:

1. Different velocities have different inertial frames of reference. A man at 30 mph has his own inertial frame of reference while a man at 0mph is in his own frame of reference.

2. There is no 'correct' frame of reference. Both are valid and true.

3. A person at constant motion that looks out the window of a vehicle does not perceive himself to be in motion but the world around him to be in motion, according to his point of view he is standing still.

4. If an observer sees something outside of his frame of reference moving then events happening in that thing appear to be happening more slowly then in his own frame of reference.

So take for example bob and bill. They both have fully charged android phones which'll last for precisely eight hours. Bob is on a spaceship going at .9C (C=speed of light, .9=90%, so 90% the speed of light).

Since bill is on the ground he sees that bob is in motion and that time passes more slowly for him. So according to bill, bob's android will last longer then his will.

But according to bob on the space ship he is not in motion but rather the world around him is, and so bill is in motion. According to bob, bill's android will last longer then his own will.

According to science fiction writers everywhere, the point of reference that is always correct is the one on a planet, which is far from correct. There is no preferred point of reference. So both Bill and Bob are correct, despite the apparent paradox.
Congratulations on stating the obvious. Did you just pass basic high school physics?
His question was whether he would age slower or faster with respect to his gf. The answer was, he will be slightly younger.


Quote:
Originally Posted by Singular1ty View Post
Actually, he will be able to observe what you did. You see, this machine would slow down light. That means that when the cloaked person moves he is still sending out light, but at 60mph.

The image would take longer to reach the observer's eyes, but other then that it is unmodified.
Again, stating the obvious much?
Yet, once he disabled the cloak, non-slowed down photons would overcome the slower photons only traveling at 60MPH with respect to the ground so the observer would see both the prior and current events at the same time.
Edited by PoopaScoopa - 4/25/11 at 7:53am
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