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John McCallum Send message Joined: 5 Dec 04 Posts: 877 Credit: 599,458 RAC: 8 |
He had better get his skates on then only three shopping months to Xmas LOL "Steven Greer is bringing things to a head, in that if Obama does not come clean, he and his cohort of witnesses will this year. This could prove his authenticity one way or another, saviour of mankind, or charlatan." Old enough to know better(but)still young enough not to care |
Rick Send message Joined: 7 Sep 99 Posts: 46 Credit: 271,541 RAC: 0 |
Donegal_TDI, Since we don't know how anti-gravity would work, it may be precisely the fact that an element is unstable that allows it... In other words, atomic instability may be a requirement for anti-gravity. I don't believe in most of the "lore", btw, I think it was written as a troll either to make ufologists look foolish or just to create noise on the subject. Von Daniken must cringe when he hears these stories. |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
The expansion due to the force of the vacuum behaves as if it were anti-gravity. |
ML1 Send message Joined: 25 Nov 01 Posts: 20140 Credit: 7,508,002 RAC: 20 |
The expansion due to the force of the vacuum behaves as if it were anti-gravity. What?! That sounds just like a Von Daniken description...! Note that it is the weight (mass x gravitational attraction = atmospheric positive pressure) that pushes for example mercury up an inverted evacuated tube. The vacuum in the tube just provides an absence of a counteracting pressure. "Vacuum" doesn't have any "force" (unless you count zero-point energy...). Shame on you for falling against that trap! Keep searchin', Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
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William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Try creating a vacuum without using energy. |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
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Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30608 Credit: 53,134,872 RAC: 32 |
Try creating a vacuum without using energy. I believe you mean try and maintain a vacuum without using energy. |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Nope. A thermos bottle does just fine. |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30608 Credit: 53,134,872 RAC: 32 |
Nope. A thermos bottle does just fine. Not nearly a vacuum. http://en.wikipedia.org/wiki/Vacuum_energy |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
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William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Yes. There is apparent energy in a vacuum which ostensibly causes the Universe to expand --or so we would model what we see or think that we see. But: calculations trying to explain this from accepted principles differ by 120 or so orders of magnitude compared to what we observe. This suggests that we don't know what is really going on. Expansion of the cosmos could be due to something that is or looks like "Negative Gravity". Perhaps there is another universe in one of our 11 dimensional branes that is attracting us through plain old gravity but we can't see it since we are three dimensional creatures. The big question to me is: what is the mechanism that creates new space and new vacuum and new vacuum energy and how does it work and why. Seems that we have strayed from the original topic--all the way from nonsense to wondering about cosmological physics. |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
Dark energy is one of sciences biggest mysteries. Nobody knows how it got there, how it works, why it makes the universe expand and why there is so much of it. rOZZ Music Pictures |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30608 Credit: 53,134,872 RAC: 32 |
Everyone knows it is the residue of warp engines, their global warming. |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
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Allie in Vancouver Send message Joined: 16 Mar 07 Posts: 3949 Credit: 1,604,668 RAC: 0 |
I am not even convinced that dark energy (or even dark matter) actually exists. Both are somewhat ad-hoc inventions to fill holes in the main cosmological theories. It is rather like the aether of old. A hundred years ago it was believed that light was a wave and a wave would need something to travel through, so it was postulated that empty space was filled with some mysterious substance called aether through which the waves could travel. Then along came quantum theories and scientists realized that light was not a wave, but could act like a wave or it could act like a particle. With this new, deeper understanding of underlying principles, the concept of 'aether' was no longer required. I think that it will be the same with dark energy. Someday, some bright mind will come along, will take a massive leap of imagination and suddenly we will all be slapping our foreheads and saying "So simple. Why didn't I think of that." Pure mathematics is, in its way, the poetry of logical ideas. Albert Einstein |
William Rothamel Send message Joined: 25 Oct 06 Posts: 3756 Credit: 1,999,735 RAC: 4 |
Unless there is an alternate explanation for the doppler shift we see in the light from far-distant galaxies, the universe is expanding at an accelerating pace. This requires the energy to overcome gravity PLUS the energy to accelerate an extraordinarily large mass. Where it is and what it is and what's causing it are the questions. Another possibility which has been discredited is that light loses energy as it travels over enormous distances and therefore shifts frequency. In this case the apparent doppler shift would not be caused by a moving source. As I said this theory due to the irascible Fritz Zwickey has been generally shown to be wrong by what the COBE sky survey shows about the temperature of the universe and it's relative homogeneaity. |
Gary Charpentier Send message Joined: 25 Dec 00 Posts: 30608 Credit: 53,134,872 RAC: 32 |
In one stardrek episode I seem to remember a comment about one area of space being unstable due to the overuse of warp engines and some side effect thereof. Can't remember more details, but I'm sure someone else can fill it in. I think in the future some change was made to the engines so that this pollution was mitigated. So I say their technology's global warming is dark energy. |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
Ok. Thanx Gary :) rOZZ Music Pictures |
Julie Send message Joined: 28 Oct 09 Posts: 34041 Credit: 18,883,157 RAC: 18 |
Accurate analyses of WMAP in march 2003 proved the existence of dark energy. Cosmologists still can't explain the how and why. They think it is the energy of the vacüum itself, the so called zero point energy. Bumps in the cosmic microwave background also speak of dark energy. WMAP sees the effect of dark energy on the energy of microwave photons at various temperatures and angular scales. In other words, the WMAP detects propreties in the microwave light under the influence of dark energy. rOZZ Music Pictures |
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