back to physics..

Wed Apr 28, 2004 2:44 am by kimk

so like.. the dudes up at nasa were working on this little gadget for some time now.. all in the name of the queer einstein fella. anyways i thought it might be good to let the ignorant masses get informed about this.

the whole experiment is basically to study how the presence of a big body (in this case, planet earth) disrupts space and time. its like holding a bedsheet by the corners, tight, and placing a ball in the centre. the sheet then is forced down at the centre due to the mass of the ball, and hence, sort of 'wrap's itself around the ball, well to a certain extent at least. and einstein made some study about this issue back in his time and the space dudes are now trying to get some figures done.

with the modders now coming down en masse on big pictures, and my not having much time to get a small version hosted up on my site.. i'm just posting linkys.

gravity probe B

Explanation: Does gravity have a magnetic counterpart? Spin any electric charge and you get a magnetic field. Spin any mass and, according to Einstein, you should get a very slight effect that acts something like magnetism. This effect is expected to be so small that it is beyond practical experience and even beyond laboratory measurement. Until now. In a bold attempt to directly measure gravitomagnetism, NASA launched last week the smoothest spheres ever manufactured into space to see how they spin. These four spheres, each roughly the size of a ping-pong ball, are the key to the ultra-precise gyroscopes at the core of Gravity Probe B. Will the gyroscopes feel gravitomagnetism and wobble at the rate Einstein would have predicted? Stay tuned. Better understanding space, time, and gravity can have untold long term benefits as well as likely shorter term benefits such as better clocks and global positioning trackers.

some more links:
Gravity Probe Launched 04.20.04
what is gravity probe B?
some more stuff <- not very informative IMHO but what the heck.

EDIT: hopefully the edited title will convince some others to click on this thread

Edited by - kimk on 4/28/2004 9:51:28 AM

Wed Apr 28, 2004 2:52 am by Nickless V2

erm...nice pic?
Why do we care for something which, if it even excists, is so tiny we can't measure it and therefore, probably not generate it and use it?
Just a bit pointles if you ask me. But it might get a nice discussion started

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Wed Apr 28, 2004 3:30 am by Esquilax

Even though it will most likely have little to no practical applications, it will hopefully enable us to understand more about physics. We still know so little. Still, I think that NASA should be spending their time (and money) on creating a "faster-than-light" engine, rather than the "smoothest spheres ever manufactured"

.

Note: I am aware that "faster-than-light" travel is believed to be impossible, so don't bother pointing that out

.

Wed Apr 28, 2004 3:33 am by kimk

if you must ask, the first thing that came into my mind was time travel, for some reason.. if the earth, which is by relative standards, a tiny celestial body, does affect space and time, we could somehow make a "matter generator" of sorts that will create a well, a warp gate, so to say.

since it wil influence space and time, we could travel through time and/or space, that is, if such a technology capable of producing a massive virtual body were developed. we've seen this more than couple times in both SL and FL.

i'm thinking that the development of such a technology could be accelerated by locating and getting close up on worm holes, or black holes, given that we stay in one piece and where we want to.

EDIT: @eskie, travel ing faster than light is technically impossible, but i saw today, forgot where, will search for linky soon.. but there are some stuff that they found.. the nasa dudes again.. that influence each other instantaneously.. as in if you did something to one counterpart, no matter how far away the other counterpart was, given couple trillion light years or next to each other.. something would happen to the other counterpart instantaneously.

ah, found it something about an entanglement
Edited by - kimk on 4/28/2004 4:37:25 AM

Edited by - kimk on 4/28/2004 4:42:38 AM

Wed Apr 28, 2004 4:48 am by ssjgarretjax

@kimk I think it is quantum physics I remember hearing about the "quantum teleportation" it seems to jibe with what you said (not reading the linky want to see if i'm right)

I Am Sharp like Bowling Ball

edited heh read the article and i was right how BOUT that

Edited by - ssjgarretjax on 4/28/2004 5:49:00 AM

Wed Apr 28, 2004 11:05 am by The Evil Thing

EDIT: @eskie, travel ing faster than light is technically impossible,

Wasn't that simply the idea of accelerating to the speed of light? If we somehow managed to get an object to travel faster than light without accelerating to it then we wouldn't have the problem of the mass becoming infinite etc.

Correct me if I'm wrong here...

I'm not evil, just morally challenged

Wed Apr 28, 2004 11:12 am by Megistos

The mass of an object cannot become infinite, as it would need to accelerate infinitely. However, this is not possible, because the speed of light is the cosmic "speed limit". I don't know exactly how the proof of that goes, but all your regular F=ma calculations break down, you start to get 0 on the denominator, which is every mathematician's nightmare

In short, you can't go faster than light.

"There are 10 kinds of people in this world: those who understand binary and those who don't"

Wed Apr 28, 2004 11:18 am by pSYCHO

Hehe, Darkstone the knowledgable mathematician eh?

Well you got ** finds out info ** 45, and I got 55 in maths so

Wed Apr 28, 2004 11:23 am by Megistos

True, but that sheet was hardly about astrophysics and Einstein's Relativity, was it?

"There are 10 kinds of people in this world: those who understand binary and those who don't"

Wed Apr 28, 2004 11:27 am by pSYCHO

ah, but how useful will that be for you at this point in time

methinks the maths albeit about integration and graphs etc, is more helpful

Wed Apr 28, 2004 2:34 pm by Esquilax

Thanks for the link, Kimk

. *Reads article* Interesting, but I wonder how the two particles can interact instantaenously over such large distances. Perhaps they are different facets of a greater whole, or perhaps every particle is linked to another (or even all other particles) in ways that we cannot observe. Fascinating.

In regards to "quantum teleportation", it is kind of hard to prove. You change the outcome by the very act of measuring it, do you not?

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back to physics..

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back to physics..

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