19 Jan 08
Originally posted by PonderableOf the four fundamental forces of nature (electromagnitics, gravitation, the strong and the weack nuclear forces) we can only handle electromagnetics with the photon as force carrier.
In fact I was tryiong to make a point about the expression "anti-gravity" as it has been used in Science fiction, which is to overcome gravity by actually switching it off by some mysterious means and being able to fly without the use of energy. In fact I am quite sure that it can't work at all.
We can elctromagnetic energy into thermal energy and vice versa. We can produce photons and we can absorb photons. We can handle different energy levels of a photon. So Photons we can handle quite elegantly (yet still much to know about electromagnetics).
About the graviton we know practically nothing. We can't even detect it properly.
I say, we have a long way to go until anti-gravitation devices become practical.
19 Jan 08
Originally posted by uzlessUS has had flying saucer squadrons since 1947, where do you think all the UFO sightings come from?
I finally found a video demonstration of this technology. The rumour is the US has developed this into a machine that can fly. I think we'll hear more about this in the years to come.
Essentlialy, you just run high voltage through wires and it causes the device to lift off the ground. If you think this is fake, check the other videos.
http://youtube.com/watch?v=lfYZeu6ZhvI&feature=related
19 Jan 08
That's already proven that that's not anti-gravity. They put that thing inside of a vacuum chamber so the only force that will act on it is gravity to see if it will still fly. It didn't move at all. I forgot the exact reason why it didn't move since it was a long time ago.
19 Jan 08
Originally posted by PonderableIt works great! The "machine" that does this amazing feat is actually the lack of large masses nearby. It's free! Unless you're stuck to a planet.
In fact I was tryiong to make a point about the expression "anti-gravity" as it has been used in Science fiction, which is to overcome gravity by actually switching it off by some mysterious means and being able to fly without the use of energy. In fact I am quite sure that it can't work at all.
19 Jan 08
Originally posted by Best101I saw a mythbusters episode on this device and as far as i remember the high voltage current running through the wire ionises nearby molecules of oxygen nitrogen etc. The ions, finding themselves in an electromagnetic field, accelerate downward, exerting an upward force on the wire carrying the current.
That's already proven that that's not anti-gravity. They put that thing inside of a vacuum chamber so the only force that will act on it is gravity to see if it will still fly. It didn't move at all. I forgot the exact reason why it didn't move since it was a long time ago.
I'm sure someone with a better understanding of the principles involved can polish up my answer, it's been 10 years since i've studied this stuff.