If a tree falls in the forest...(and more philosophy)

DeletedUser21 · Post by **DeletedUser21** » 30 Apr 2006 11:48

God? What do you mean? Chris Sawyer!

Daan Timmer · Post by **Daan Timmer** » 11 May 2006 21:55

About the quantum stuff.. realy interesting...

I just heard a story from one of my teachers:

If you take a box, place a cat in that box, and you take another exact same box. And put an quantum thing in it. A killing quantum thing, that kills cats.

Ok, now it is known about quantum-things that it is not possible to determine their position/state by any meens.
So you don't know if he is in the left corner, top right, center.

Now, you connect a tube between the box of the cat and the quantum-thing.

You still are not sure where the quantum thing is, but! you do know where the cat is.

Now you cut the tube in half and close both ends (immidiatly!)

At this state, you are unsure, where the quantum-thing is.

Now you can move around (in time). Without knowing where it is.

Now comes the fun part.

Once you are a few miles away. And take a look at the cat, and it is alive, you know the quantum thing is still int the other box, OR hasn't reached the cat.
If the cat is dead, you know it (was)is in the box. So you then know on (for example) earth, that in space(moon) the box is empty.

So theoretically you are looking in the past, to determine a value in the future.

On another note.
Did you know:
-It is VERY easy to travel faster then light?
-It IS possible to be at 2 places at the same time, with the same body.
-*Warp speed* really (can) excists

It has to do with bending the (time in the) universe.
If you create a black-hole, it is possible to be at 2 places at the same time, it is possible to travel faster then the light (since you bend 2 places together and just step over a little ridge, allowing you to travel lightyears of distance with 1 footstep. And that also includes *warp speed*.

Theoratically, you need a very heavy magnet that can produce a very large gravity on one spot. With which you can bend 2 places together, and thus creating a dimensional *gate*

step over it, and you are in anther place.

(Thats a bit how he told me

)

Moriarty · Post by **Moriarty** » 12 May 2006 12:33

If you take a box, place a cat in that box, and you take another exact same box. And put an quantum thing in it. A killing quantum thing, that kills cats.

It's not a story, it's a thought experiment called Schrodingers Cat.:
http://en.wikipedia.org/wiki/Schrodinger's_Cat

Csaboka · Post by **Csaboka** » 12 May 2006 15:40

Daan Timmer wrote: Did you know:
-It is VERY easy to travel faster then light?
If you create a black-hole,

Oh, yes, that's a very easy method indeed. Every decent household has an insta-black-hole pack. You just add water, and *poof*, here's the black hole for you

And when you have your black hole, good luck passing through it without being torn into million pieces.

Daan Timmer wrote:Theoratically, you need a very heavy magnet that can produce a very large gravity on one spot.

Magnets don't produce gravity (at least not any more than a stone with equal mass, that is). Magnets produce, well, magnetic fields.

MeusH · Post by **MeusH** » 12 May 2006 16:16

Daan Timmer wrote:Theoratically, you need a very heavy magnet that can produce a very large gravity on one spot. With which you can bend 2 places together, and thus creating a dimensional *gate* step over it, and you are in anther place.

Umm, I thought my body isn't made of metal. So, I'd stand on the magnet and what? Is it going to suck my metal shiny ass I'm not Bender, am I? (joke) button on my trousers?

DeletedUser21 · Post by **DeletedUser21** » 12 May 2006 17:02

Time traveling can be explained by some sort 'folding' of the universe (the first 3 dimentions we live in) so reducing the size of the 4th dimention (time) this can be explained by the super string theory.

Csaboka wrote:And when you have your black hole, good luck passing through it without being torn into million pieces.

That is if you enter the blackhole, it is (also in theory) possible to stay away from the blackhole itself but just until you reach the blackholes event-horizon, time is absolute 0 there, but particles on a planck scale can pass trough the 4th dimention if the time is even almost absolute zero, you only need to 'beam out' (to reduce your size to planck scale and enter the event-horizon --> wait until the right timeframe and 'beam-out' of the event-horizion.

Csaboka wrote:
Daan Timmer wrote:Theoratically, you need a very heavy magnet that can produce a very large gravity on one spot.
Magnets don't produce gravity (at least not any more than a stone with equal mass, that is). Magnets produce, well, magnetic fields.

Magnetic fields should release Gravitons (wait till this is proven (or not) at CERN in 2007 with the particle exelerator) If those are found it should be possible to focus specific gravity onto one spot.

GO Ph.D. Stephen Hawking, Theoretical Physics and Quantum Technology.

Daan Timmer · Post by **Daan Timmer** » 12 May 2006 22:08

Well, the theory about blackholes compressing every particle to minimum size has been thrown away, abondend, killed, dismissed,whatever, a looong time ago!.

The reason why blackholes are black (and that it looks like as if stuff dissapears to the nothing) is due the fact that it indead *sucks in* everything, even light. Since you *bend* the universe, you also bend time and light.

So light is going in, and the further more the light is in, the steeper the curve becomes resulting in that the light does go in it, but doesn't (seem) to come out of it.

The only light you will see are those waves that are just infront of the *zero* barrier and thus they will come out very very slowly.

Do note, this is all still theoratical till we really place a person IN a blackhole

As for creating *gravity*

It is proven that if you place like 2 HUUUGGGEEEEEE blocks of lead infront of each other. That they will attract each other due the creation of gravity.

So you need a device that can *simmulate* or *produce* this force that these blocks make.

Place it in a space ship, poof:)

SpComb · Post by **SpComb** » 12 May 2006 22:15

Daan Timmer wrote:As for creating *gravity*

It is proven that if you place like 2 HUUUGGGEEEEEE blocks of lead infront of each other. That they will attract each other due the creation of gravity.

So you need a device that can *simmulate* or *produce* this force that these blocks make.

To simplfy out weird modern relativity stuff:

http://en.wikipedia.org/wiki/Gravity#Ne ... ravitation

any two objects will create a gravitational force between them. Be it two peas or two giant blocks of lead. Heck, what do you think keeps you on the surface of the earth, or satellites in orbit?

DeletedUser21 · Post by **DeletedUser21** » 13 May 2006 00:10

Daan Timmer wrote:Well, the theory about blackholes compressing every particle to minimum size has been thrown away, abondend, killed, dismissed,whatever, a looong time ago!.

The reason why blackholes are black (and that it looks like as if stuff dissapears to the nothing) is due the fact that it indead *sucks in* everything, even light. Since you *bend* the universe, you also bend time and light.

http://en.wikipedia.org/wiki/Quantum_tunnelling
http://en.wikipedia.org/wiki/Hawking_Radiation

Read these articles and reformat it as my argument since I'm at the moment too tired of explaining (had a party going on.

)

A blackhole isn't that black.

Daan Timmer wrote: So light is going in, and the further more the light is in, the steeper the curve becomes resulting in that the light does go in it, but doesn't (seem) to come out of it.

The only light you will see are those waves that are just infront of the *zero* barrier and thus they will come out very very slowly.

That is the fun of quantum physics and theories: 'If you have some information, that information cannot be lost.' You have a particle, that particle might be sucked into a blackhole but the particle is still there.

(In quantum science you must rule out any infinities.

)

Daan Timmer wrote: Do note, this is all still theoratical till we really place a person IN a blackhole

That would be cool.

Daan Timmer wrote: As for creating *gravity*

It is proven that if you place like 2 HUUUGGGEEEEEE blocks of lead infront of each other. That they will attract each other due the creation of gravity.

So you need a device that can *simmulate* or *produce* this force that these blocks make.

Place it in a space ship, poof:)

This is explained by SpComb already.

train lord · Post by **train lord** » 13 May 2006 00:30

how can there be a sound if there is no one there

DeletedUser21 · Post by **DeletedUser21** » 13 May 2006 00:31

If a tree falls in the forrest it will make a sound, but there is noone to register it. (See other topic)

Ben_Robbins_ · Post by **Ben_Robbins_** » 13 May 2006 02:03

Do we hear the sound, or do we just acknollage the electrical pulses that are a by-product of soundwaves hitting our ear drum...

The soundwaves are always there, but the sound isnt....

Daan Timmer · Post by **Daan Timmer** » 13 May 2006 16:08

Sound is something we hear.

But, there is no sound, if you don't hear it.

If that tree would fall in space instead on earth, would there still be sound?

Post by **Dave** » 13 May 2006 16:11

No, because space is a vacuum, and sound waves cannot travel through them... right?

DeletedUser21 · Post by **DeletedUser21** » 13 May 2006 17:33

Sound need oxygen in order to reproduce so there is no sound in space. (even a supernova is as silent as death.)

SpComb · Post by **SpComb** » 13 May 2006 17:54

Mr. X wrote:Sound need oxygen in order to reproduce so there is no sound in space. (even a supernova is as silent as death.)

Teeheehee. Wrong

Sound needs a medium. Be that oxygen (or air), iron or your socks (possibly).

/me throws a bunch of fleas at Mr. X

DeletedUser21 · Post by **DeletedUser21** » 14 May 2006 10:55

/me evades!

Oxygen works best to let the sound flow!

/me throws a stick at SpComb

Daan Timmer · Post by **Daan Timmer** » 14 May 2006 11:29

Mr. X wrote:/me evades!

Oxygen works best to let the sound flow!

/me throws a stick at SpComb

Not true, oxygen is not the best *transporter* for sound waves

I have forgotten what best *transporter* it is. but it definatly isnt oxygen *for as far as I can remember my physics from 4years ago*

r · Post by r » 14 May 2006 12:12

Liquid mediums are the best, hence sound conducts better through water than it does through air.

DeletedUser21 · Post by **DeletedUser21** » 14 May 2006 14:45

I'm going to look it up now, I don't think water is better, (ever tried to talk to someone under water?

)

Moment...

I couldn't find an exact page about this but it can be calculated with different formulas.
And it seems that the best medium differs when an other form of sound is used. (music, speech etc.).

Reference link:
http://en.wikipedia.org/wiki/Acoustic_impedance

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If a tree falls in the forest...(and more philosophy)

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