Very confusing science question

[Jarkava]

Q: How thick would a diamond sheet have to be to stop a 'typical' speeding bullet passing through? Is the so-called 'hardness' property of a material proportional to the amount of that material that's needed to stop a bullet? Or do other factors such as 'tensile strength' and 'elasticity' come into play?

 

Answer: if you have one please tell me!

[dragburn]

well the typical speeding bullet would probably be the very popular 9mm round. that is my speculation at least. and probably a plate the size of a piece of paper would have to be at least an inch thick to stop it. then again this is all of the top of my head in a very big guess. but hardness doesnt refer to the rigidity of the substance it more refers to the structure of the atoms that it is formed by. diamond is a hard substance because nothing can scratch it.(that we know of anyways) but it is fragile and will break if enough force is applied. it also wouldnt be very practical for stopping a bullet due to how expensive it is to buy or artificially make.

[Pocal]

Are you seriously planning on making something bullet-proof with diamonds??

[Jarkava]

no but that would be cool though! maybe I should. . . .

[Dark_Nightmare]

Now he're some toughies for 'ya.

 

 

What are one of the uses of wormholes, how do you make a wormhole, what's a singularity, and it time-travel possible?

[Tanyia]

Use of wormholes? Probably travel to another universe.

 

HOw to make one? Simple...just collide a black hole with a white hole...simple...

 

Singularity? Point of infinite density at the center of a black hole.

 

Is time-travel possible? No.

[sparhawk]

Is time-travel possible? No.

 

So true. If you wanted to go invent the pen before the inventor youd go back in time. when you came back, you wouldnt have needed to invent the pen because it was already invented. so you go back in time.

when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time. when you came back,you wouldnt have needed to invent the pen because it was already invented. so you go back in time.

 

You would create a paradox. A loop in time. This is why time travel is not possible.

[ParadoX]

You would create a paradox.

 

You can't create me, for I was always there!

[sparhawk]

You would create a paradox.

 

You can't create me, for I was always there!

 

Lol

[ParadoX]

:lol:

[Jarkava]

time travel is real this is what einstein said. . . .

 

[sparhawk]

It is real but you would destroy time. you would create a paradox.

[Dark_Nightmare]

He hem, yes, you can time-travel, there is no such thing as a white-hole, it involves particle accelrators and time and space and etc, you use a wormhole to travel in time, and the singularity is right. I read a book on this.

 

And yes, it explains paradoxs, so that's why you can't travel back in time from the time you created the wormhole. Example: You make a wormhole in 2010. You keep it alive for 100 years. If you enter it in 2110, you'd go back to the time of it's creation, 2010. About the paradoxs, that's why things like this are discounted for.

[Tanyia]

We can't say whether there are or are not white holes. None have been observed. What we can say is that we cannot create one. They are the equivalent of a time-reversed black hole.

 

Out of curiosity, what book?

Edited November 21, 2005 by Tanyia

[gurgeh]

Q: How thick would a diamond sheet have to be to stop a 'typical' speeding bullet passing through? Is the so-called 'hardness' property of a material proportional to the amount of that material that's needed to stop a bullet? Or do other factors such as 'tensile strength' and 'elasticity' come into play?

 

Answer: if you have one please tell me!

 

hardness means only how much a material resists to be scratched but not the amount of pressure. a very hard material can be easily broken like glass.

[Jarkava]

But it wouldn't be a paradox it would be a purple hole soooooooooo you would travel at the speed of light into the infininte beyond and never come back until lets say 70 years or so but since you went so fast it seems like a long time but is actually a couple of seconds because you where going so fast. And since you were goingg so fast you would throw the earth off its axis and then we would all freeze in time until aliens come and defrost us and we continue to live our normal lives like nothing happened.

[70347]

Simple Recipe for a Time Machine:

Step 1. Make a wormhole (somehow).

Step 2. Accelerate one end of the wormhole close to the speed of light (not to c, that is impossible)

Step 3. Return the accelerated end back to the starting point.

Step 4. Travel through the end that was not moved and you will go back in (relative) time.

 

The Catch. You can't go back in time farther back than the age of the wormhole. Plus the diffuculty in making, stablizing, and moving a wormhole.

[Learner]

I've had no problems with my time travels or any paradox's at all! I think the universe is self healing!

[Wytter]

Paradoxes are often used to explain why time travels would not be possible. But scientifically we don't know enough to say either yes or no.

 

Say that the universe on the macroscopic scale works like quantum mechanics on the microscopic scale, and you can have superpositions of time and space. This would lead to an infinite # of parallel universes, and in that situation time-travelling would just mean travelling to a different parallel universe.

[dragburn]

instead of a major time loop like everyone else is thinking i believe that you would almost stop in a way. (note this is through the theory of reletivity time travel speculations) you would hit beyond light speed and then go back in time to a decelerated speed aka the speed of light in other words that very moment where you exceeded the speed of light you would be stuck. but that is only one direction of time travel...the other direction is more pheaseable but suicide...

[Tanyia]

You can't accelerate past c, ever. However, if you were already going faster than c when you were created, well, that's a different story

 

And I was thinking about staying in this universe, not moving into parallel ones when I said "No" .

[ttlanhil]

You can't accelerate past c, ever.

I thought it was that you can't accelerate to c. in which case, moving faster or slower is fine, you just can't linearly pass (multiples of) c.

fun stuff to ponder ^_^

[Tanyia]

You can't accelerate past c, ever.

I thought it was that you can't accelerate to c. in which case, moving faster or slower is fine, you just can't linearly pass (multiples of) c.

fun stuff to ponder ^_^

 

to or past*

[Wytter]

Mathematically, no. In reality, perhaps - we just have to assume that we can't otherwise we'd need to change our models, again; which would be a pity since they seem to explain most issues quite well.

Edited November 28, 2005 by Wytter

[Dark_Nightmare]

White Holes: Well, erm, mathematically and theoretically they could easily exist, on problem is, a white hole would be the opposite of a black hole. A black hole is a regio in space which no object can escape, a white hole would be a region of space where nothing can enter. This would be impossible, unless by some twist of fate there is a celestial being that has a STRONG centrifical force.

 

Worm Holes: There are many problems considering stability and it would super-compress any radiation/matter that enters, making it to dangerous to travel through. And you would need the white hole.