Quantum Physics Questions.

[Jazz_Fascist]

I'm noly a novice quantum physicist, and I have a few questions about it that I need a explaination to:

1. When a partical is shot at a atom at the speed of light, did you know that the partical is already in the atom before it hits it. Why is this?

2. How the hell do you bend the universe (i.e. a wormhole.)?

3. If you go at the speed of light, and time is supposed to stop, why is ithis so?

4. Is it possible to go back in time (without the use of a DeLorean and a flux capacitor)?

5. What are sub-atomic particals made from?

6. How many dimensions is there?

This one isn't really about quantum physics, but take a look:

7. If you are in a military aeroplane traveling exactly north at 200mph. There is one of those big doors at the back of the plane to let on vechiles, etc, and it is opened. You are pointing a gun dead south, in the oppisite direction, and you fire the gun. A bullet comes out of it exactly at 200mph. If the plane is going 200mph north and the bullet is going 200mph south, is the bullet moving at all?

 

[Gerko]

I don't know jack, but I'm interested, too.

6: Um ... a lot ? 24 or so ? I remember reading something along those lines ... (or having named X amount of 'em)

Please note that these 'dimensions' are not the typical sci-fi "alternate universes", but in the "I can travel in X amount of axis" kind of way.

If those exist (Eh, I don't know ?), then there's an infinite amount of 'em.

Eh, Someone else explain better.

7. If you are in a military aeroplane traveling exactly north at 200mph. There is one of those big doors at the back of the plane to let on vechiles, etc, and it is opened. You are pointing a gun dead south, in the oppisite direction, and you fire the gun. A bullet comes out of it exactly at 200mph. If the plane is going 200mph north and the bullet is going 200mph south, is the bullet moving at all?

Sure it is. Downwards.

 

[JJ86]

I'm noly a novice quantum physicist, and I have a few questions about it that I need a explaination to:

Well, I'm a novice know-it-all so I should be able to help you.

1. When a partical is shot at a atom at the speed of light, did you know that the partical is already in the atom before it hits it. Why is this?

An atom is made up of all elementary particles to begin with. Sub-atomic particles are pieces of protons, neutrons, etc.

2. How the hell do you bend the universe (i.e. a wormhole.)?

The universe is multidimensional but we percieve only three of the dimensions(4 if you count time). Imagine a piece of paper in 2d space. In 2d space it would be impossible for the ends to touch but we are able to bend the paper into a third dimension so that those two ends can touch. Expand that train of thought into a four or five dimensional space. Space itself can be bent in the same way to align two points that would normally be very distant.

3. If you go at the speed of light, and time is supposed to stop, why is ithis so?

Time doesn't really stop, the rate of time from your reference is different from the rate of time in another reference point. From a static point of reference it may appear that your time has slowed but you don't notice any difference from your point of view.

4. Is it possible to go back in time (without the use of a DeLorean and a flux capacitor)?

If you take the assumption that time is another dimension it would be as simple as traveling through a wormhole to get to a distant point in the universe. There are many paradoxes/paradoxi associated with time travel like the ability to change history affecting your past. So there may be some built-in limitations affecting the transference of 3-dimensional matter to the past or future. We may never really know.

5. What are sub-atomic particals made from?

Matter is just energy in a different form.

6. How many dimensions is there?

There are an infinite number of dimensions.

This one isn't really about quantum physics, but take a look:

7. If you are in a military aeroplane traveling exactly north at 200mph. There is one of those big doors at the back of the plane to let on vechiles, etc, and it is opened. You are pointing a gun dead south, in the oppisite direction, and you fire the gun. A bullet comes out of it exactly at 200mph. If the plane is going 200mph north and the bullet is going 200mph south, is the bullet moving at all?

Of course, take the instantaneous point of time of time where the bullet is sent from the gun. It is given an instantaneous velocity from that point regardless of the velocity of the gun which travels north at 200mph. So the bullet's change in velocity is actually 400 mph.

 

[Brother None]

I'm noly a novice quantum physicist, and I have a few questions about it that I need a explaination to:

My finishing paper was about Einstein's theories of relavity (both of them; the second is insanely difficult)

1. When a partical is shot at a atom at the speed of light, did you know that the partical is already in the atom before it hits it. Why is this?

Uhm...I don't understand the question. "In...before hitting" is impossible in all cases.

Though, come to think of it, if the particle gives the electron cloud the necessary amount of energy to trigger K-capture (which usually gives out energy, and doesn't require it), the particle would not be in the core, but rather an neutron being changed into a proton.

2. How the hell do you bend the universe (i.e. a wormhole.)?

It has to do with anomolies (sp?). When the expansion force (caused by nuclear fusion reactions) of a star becomes greater than the gravitational force, the star expands, this happens to every star just before the gravitational pull takes over from the expansion force and the star collapses.

In the centre, gravity remains the same, causing a "black hole", this black hole has an event horizon, further. All light that passes the event horizon gets sucked in, so its force is greater than the speed of light, so that nothing can escape it (see below).

Now, in theory, if this anomoly has a certain amount of force and no more or less than it, it forms a worm hole though which travel is possible, as JJ86 described.

Funny facts:

According to Einstein; when you approach an event horizon time, for you, stays the same, but for an outside observor you go slower and slower until your movement might just as well have stopped. While you just pass the event horizon normally (after which you die a horrible death), time outside the horizon moves into infinite future, i.e. you only pass the horizon in the infinite future for outside observors, also known as "not".

And if you're inside the black star and move out of it (which would require a vessel travelling faster than the speed of light, which is impossible, see #3) time would slow down for you, so that you only pass the barrier in the infinite past, again, also known as "not".

3. If you go at the speed of light, and time is supposed to stop, why is ithis so?

The question is flawed. It is impossible for matter to travel at the speed of light, according to Einstein. This is because as matter travels faster (and this has been proven) it "becomes shorter" and its mass expands. At the speed of light, the length of any object is 0 (really! Though for the object itself it is just as long as it always was, outside observers see it as 0) and the mass infinite.

And E = .5mv², so that the energy needed to move something of infinite mass would be infinite.

4. Is it possible to go back in time (without the use of a DeLorean and a flux capacitor)?

Like I said above, it is possible to travel into the infinite past. Kind of useless as the journey takes infinite time and is impossible.

5. What are sub-atomic particals made from?

Probably other, smaller particles

This one isn't really about quantum physics, but take a look:

7. If you are in a military aeroplane traveling exactly north at 200mph. There is one of those big doors at the back of the plane to let on vechiles, etc, and it is opened. You are pointing a gun dead south, in the oppisite direction, and you fire the gun. A bullet comes out of it exactly at 200mph. If the plane is going 200mph north and the bullet is going 200mph south, is the bullet moving at all?

1. It is not smart to fire bullets inside a plane.

2. Inside the plane, the bullet is moving at 200mph, outside the plane, it's not moving.

3. "miles" are not an accepted scientific way of measuring distance, use the SI

4. The speed of the bullet at t=0.00s is 0. After that, the difference in force speed the bullet up.

 

[Jazz_Fascist]

Thanks Kharn and JJ86 for your help. Tht is all I needed to know.