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HasuMasu · 2012-05-09, 02:10

Quote:

Originally Posted by SaintessHeart

Low velocity, high stopping power. Aim for the forehead would do.

I see, somehow a part of me was worried that the bullet would stop somewhere in the cortex before reaching the brainstem.

Above the bridge of the nose between the eyes is okay, right?

SaintessHeart · 2012-05-09, 02:14

Quote:

Originally Posted by Detective-san

I see, somehow a part of me was worried that the bullet would stop somewhere in the cortex before reaching the brainstem.

Above the bridge of the nose between the eyes is okay, right?

What the hell, if here is so much trouble, just shoot him in the kneecap and bash him to death with the pistol!

Ascaloth · 2012-05-09, 02:15

...am I ever going to get an explanation as to why you're asking such questions, Detective-san?

NoemiChan · 2012-05-09, 02:22

Just simple explanation would be fine. Time travel is only possible in paper but actually building one is definitely the problem. How would travel? How would you break the time barrier?

Merilyn Mensola · 2012-05-09, 02:53

Quote:

Originally Posted by SaintessHeart

I believe those who fired a 12-g shotgun with buckshot here can vindicate me on its destructive power within 25m. Zombie or human, the one on the receiving end can easily have a body part blown off at close range, or have his holes punched through his body by the sheer force of each pellet.

Ask gryslyjager. Although he seems to like sharpshooter weapons, I believe he has a shotgun or two in his collection.

Yeah..you're right..i couldn't resist to make a joke.

HasuMasu · 2012-05-09, 02:58

Quote:

Originally Posted by GenjiChan

Just simple explanation would be fine. Time travel is only possible in paper but actually building one is definitely the problem. How would travel? How would you break the time barrier?

Depends on what theory you're working under the assumption of.

The past is tricky, but if it's the future then what you want to do is use a whole lot of gravity to bend spacetime into a narrow 'v'.

dragon4dudes · 2012-05-09, 03:00

Quote:

Originally Posted by Detective-san

I see, somehow a part of me was worried that the bullet would stop somewhere in the cortex before reaching the brainstem.

Above the bridge of the nose between the eyes is okay, right?

I always figured execution style would be best. You know, blindfold them, put them on their knees, and fire a shot into the back of their head.

Quote:

Originally Posted by Detective-san

Depends on what theory you're working under the assumption of.

The past is tricky, but if it's the future then what you want to do is use a whole lot of gravity to bend spacetime into a narrow 'v'.

Similar principle would work for warping. Instead of bending time, bend space.

NoemiChan · 2012-05-09, 03:02

Quote:

Originally Posted by Detective-san

The past is tricky, but if it's the future then what you want to do is use a whole lot of gravity to bend spacetime into a narrow 'v'.

Hmm, so that's the reason why they always mention blackholes. Well, anyway "bendtime", hmmm..is time a thing or a in a physical state to be able to be bent? I mean like Light.. and why bending it? why not going through it like crossing a bridge.

HasuMasu · 2012-05-09, 03:07

Quote:

Originally Posted by GenjiChan

Hmm, so that's the reason why they always mention blackholes. Well, anyway "bendtime", hmmm..is time a thing or a in a physical state to be able to be bent? I mean like Light.. and why bending it? why not going through it like crossing a bridge.

There's a reason it's called the 'fabric' of spacetime.

So basically think of it as a giant panyo. If you fold or bend the panyo you're able to walk from one edge to the other much quicker than if you were to walk over it like you would usually do.

Interesting that you mention black-holes actually, that's more-or-less the amount of gravity you would need at the very least.

NoemiChan · 2012-05-09, 03:13

Quote:

Originally Posted by Detective-san

So basically think of it as a giant panyo. If you fold or bend the panyo you're able to walk from one edge to the other much quicker than if you were to walk over it like you would usually do.

Is that the same like I seen with ball sinking into something like a panyo?

HasuMasu · 2012-05-09, 03:29

Quote:

Originally Posted by GenjiChan

Is that the same like I seen with ball sinking into something like a panyo?

I'm not sure about that analogy but to make clear what I was trying to illustrate: when you put things (matter) on the panyo (spacetime), it folds (gravity). When you do that, other things (matter) get pulled (gravitational pull) towards the thing (matter) because the panyo (spacetime) is now in the shape of a slope.

In other words, with enough gravity, you can bend spacetime enough that time-travel is possible.

NeoChan · 2012-05-09, 03:37

Quote:

Originally Posted by Detective-san

In other words, with enough gravity, you can bend spacetime enough that time-travel is possible.

Like how? Time must be in a state where you can go through it, like digging tunnel across a mountain.

HasuMasu · 2012-05-09, 04:03

Quote:

Originally Posted by NeoChan

Like how? Time must be in a state where you can go through it, like digging tunnel across a mountain.

It's more like a line, what gravity does is it shortens the distance from one point in the line to another.

dragon4dudes · 2012-05-09, 06:48

I'd recommend a minutephysics video, but relativity is difficult to understand in about a minute. So instead I linked his channel.

Dextro · 2012-05-09, 13:47

Quote:

Originally Posted by GenjiChan

Is Time Travel possible? Of which is possible? Going to the past or going to the present?

Going to the present is easy, we're already here. Well, depending on your concept of present...

I assume you meant future instead of present so I'll give my answer with that in mind. As far as I know it's currently theoretically (and therefore practically as well) impossible to travel to the past with the current physics knowledge available to the human race.

It is however rather simple to travel to the future but not only is it a one way ticket it is also impossible to achieve with our current level of technology and scientific knowledge. There's two ways of technically going to the future: cryogenicaly freezing one self with a "timer" to unfreeze in a given timeframe (but that's not really time travel) or travelling as close as theoretically possible to the speed of light.

If you travel at 0.9999 * c what happens is what's called time dilation: simply put if 40 years pass for "regular folks" only about 4 hours would pass for the person travelling on our hypothetical speed-of-light travelling spaceship (btw don't judge me on the math, I'm just using random numbers to exemplify).

So if one could somehow harness the enormous power required to accelerate to such speeds and withstand the overwhelming effect that tears apart matter itself at such speeds one could take a one way ticket to the future in comparison to others here on earth.

Spoiler for gunbuster:

This is actually the same effect that happens beyond the event horizon of a black hole: matter and light speed up to such lengths through gravity that it reaches a point where light itself is incapable of escaping the gravity pull therefore rendering a black hole invisible to us and causing light that passes close enough to it to "bend" in it's direction.

But I'll shut up before I start saying even more slightly inaccurate physics facts (since I'm just a Software Engineer, not a Physics Major).

NoemiChan · 2012-05-09, 14:10

Quote:

Originally Posted by Dextro

If you travel at 0.9999 * c what happens is what's called time dilation: simply put if 40 years pass for "regular folks" only about 4 hours would pass for the person travelling on our hypothetical speed-of-light travelling spaceship (btw don't judge me on the math, I'm just using random numbers to exemplify).

Saying like time is like a cage where in you need to go in light speed to escape it. Oh, you mean when you go faster, time moves slower? well, its hard to prove since no one yet was able to achieve light speed and observe the slowing of time.

Dhomochevsky · 2012-05-09, 14:17

The effect is valid for any speed. You don't have to move close to the speed of light, but there it's the strongest of course.

It is well founded in experiments, you can measure it. It has some interesting effects.
For example, there are certain particles, that get created when cosmic radiation hits the athmosphere. These particles only exist a very short time, so short in fact, that even at the speed of light they would not be able to reach the earth's surface in time.

But because they move so fast, their time is slowed from our perspective and they do reach the surface.

NoemiChan · 2012-05-09, 14:22

Quote:

Originally Posted by Dhomochevsky

But because they move so fast, their time is slowed from our perspective and they do reach the surface.

I meant the traveler's perspective.

*got to sleep again its 3Am.

Dhomochevsky · 2012-05-09, 14:25

That is a very good glimpse into the traverlers perspective. The basic particle physics is well known, so you can calculate what should happen if relativity is true and... it does.

Alternatively, spacecraft with good clocks.

dragon4dudes · 2012-05-09, 14:29

Actually it has been proven. http://hyperphysics.phy-astr.gsu.edu...iv/airtim.html

Time slows down as you near the speed of light. It's only really hard to observe at speeds we're familiar with. Simple experiment concept would be to take 2 atomic clocks set for the same time. put one in a jet and set one on the earth. Have the jet simply fly at high speeds for like 10 revolutions around the Earth. Now compare the times the atomic clocks show. http://en.wikipedia.org/wiki/Time_dilation

2012-05-09, 06:48	Link #5714
dragon4dudes Uncountable rationality Join Date: May 2007 Location: Following the clouds North. Age: 31	I'd recommend a minutephysics video, but relativity is difficult to understand in about a minute. So instead I linked his channel. __________________ Time is an illusion. Lunchtime doubly so. Douglas Adams Where facts are few, experts are many. Donald R. Gannon void foo() {foo();} // Can you guess what this line of code does?

2012-05-09, 14:29	Link #5720
dragon4dudes Uncountable rationality Join Date: May 2007 Location: Following the clouds North. Age: 31	Actually it has been proven. http://hyperphysics.phy-astr.gsu.edu...iv/airtim.html Time slows down as you near the speed of light. It's only really hard to observe at speeds we're familiar with. Simple experiment concept would be to take 2 atomic clocks set for the same time. put one in a jet and set one on the earth. Have the jet simply fly at high speeds for like 10 revolutions around the Earth. Now compare the times the atomic clocks show. http://en.wikipedia.org/wiki/Time_dilation __________________ Time is an illusion. Lunchtime doubly so. Douglas Adams Where facts are few, experts are many. Donald R. Gannon void foo() {foo();} // Can you guess what this line of code does?

2012-05-09, 02:15	Link #5703
Ascaloth I don't give a damn, dude Join Date: Nov 2006 Location: In Despair Age: 37	...am I ever going to get an explanation as to why you're asking such questions, Detective-san?

2012-05-09, 02:22	Link #5704
NoemiChan Banned Join Date: Oct 2010 Location: Philippines Age: 36	Just simple explanation would be fine. Time travel is only possible in paper but actually building one is definitely the problem. How would travel? How would you break the time barrier?

2012-05-09, 14:17	Link #5717
Dhomochevsky temporary safeguard Join Date: May 2004 Location: Germany	The effect is valid for any speed. You don't have to move close to the speed of light, but there it's the strongest of course. It is well founded in experiments, you can measure it. It has some interesting effects. For example, there are certain particles, that get created when cosmic radiation hits the athmosphere. These particles only exist a very short time, so short in fact, that even at the speed of light they would not be able to reach the earth's surface in time. But because they move so fast, their time is slowed from our perspective and they do reach the surface.

2012-05-09, 14:25	Link #5719
Dhomochevsky temporary safeguard Join Date: May 2004 Location: Germany	That is a very good glimpse into the traverlers perspective. The basic particle physics is well known, so you can calculate what should happen if relativity is true and... it does. Alternatively, spacecraft with good clocks.