Unusual Phenomena/Revelations in Physics

[∞]

I thought Intel could use a general discussion thread for all those of us interested in physics on any level or kind, whether it be subatomic to cosmological, or anywhere in between.

Also, perhaps this could be a sort of 'physics news' thread.

Does gravity change with the seasons? - NewScientist

Physicists create a 'black hole for sound' - NewScientist

Stretched Neutrinos could span the universe - NewScientist

Our world may be a giant hologram - NewScientist

Discuss, or provide your own and discuss those.

[Phoenix]

I didn't really understand the hologram one. Information us contained within a 2D boundary, but we perceive it as 3D?

[Katsuno_Hitomi]

That hologram universe thing is pretty out there. Then again, most stuff we now accept as commonplace was at the start pretty out there, like the Internet and the existance of sub-atomic particles.

[∞]

Well, there's already been discovered, yet not implemented, ways to store data in five dimensions on discs. There's the standard three used in discs, and polarisation and colour or magnetism was then added. So even though it might not be the 'fifth' dimension as we percieve it, in reality, dimensions are simply ways for us to convey information. I personally can easily see how a fifth or more universal dimension might exist, but I also know others can't.

[ikkuh2]

I found it, home. I wonder why the x-field needs to have a certain direction, since it would break one of the conservation laws. That's pretty troubling, especially if the effect of the x-field varies between particles as the article posed. I did laugh at the title, since newton is pretty accurate at macroscopical scale and the elliptoid orbit of the earth would make it obvious, but that was before i read it. Also, the bit with the neutrinos is pretty interesting, especially the question of what would happen if one of three quantum states would fall into a black hole if the neutrino is in superposition, that makes it very abstract. Although i would guess that the neutrino would be forced into a single state, that would yet again conflict with conservation of energy. The hologram bit is pretty interesting too, although i fail to see how it would lead to a GUT, but that might just be me.

[∞]

The great attractor/the massive disturbance thingy in the cosmic background radiation may or may not be a possible cause of the certain direction. That massive 'cool spot' has been theorised to be a possible sign of another universe pushing into our own.

And Jesus fucking Christ, ikkuh, I knew you were intelligent and liked to frequent Intel, but... Fuck...

EDIT: Cosmic 'whips' may have left their mark - NewScientist
I always like the idea of cosmic strings and generally oversized single-piece structures...

[ikkuh2]

The great attractor, i've just looked it up, it's the huge concentrated amount of mass, amirite? Anyway, cosmic strings are pretty interesting, in one episode of naked science they were a hypothetical method of time-travel, acting like a stretched black hole. But i can imagine how this would cause gravitational waves, since it would cause corridors in spacetime where there was previously was a gravitational field and this sudden morfing of space-time caused a ripple effect. And that last remark, if it's about my way of thinking, it's purely the result of my education in physics.

[∞]

Originally Posted by ikkuh2

The great attractor, i've just looked it up, it's the huge concentrated amount of mass, amirite? Anyway, cosmic strings are pretty interesting, in one episode of naked science they were a hypothetical method of time-travel, acting like a stretched black hole. But i can imagine how this would cause gravitational waves, since it would cause corridors in spacetime where there was previously was a gravitational field and this sudden morfing of space-time caused a ripple effect. And that last remark, if it's about my way of thinking, it's purely the result of my education in physics.

Eh, I learnt of, or rather heard of, cosmic strings through a device, used for timetravel in the method you mentioned, when reading through the Xeelee series, or something of similar name, a bunch of novels.

From what I know of cosmic strings, it seems they would, bundled together appopriately and perhaps even not in incredibly large quantities, creating a significantly large and distinct mass to qualify as the great attractor. Along with that, a piece of cosmic string has also been theorised as the great attractor.

[ikkuh2]

Then i hope cosmic strings aren't composed of matter, because if it were, i doubted it would cause the direction of the x-field, since that would be the mediator between particles and specifically their properties and the field of gravity. But it still needs some polishing, since conservation of angular momentum would be an issue if the x-field doesn't have an equal effect on every particle. Every new theory has issues, so i shouldn't be dismissing it on that single fact.

[Square Ninja]

Diggin dat "sound black hole" test on Hawking radiation. Sounds like a fairly clever way to measure "black hole" decay.

[∞]

Dunno if it's practical, but I imagined the sound black hole as a king of stealth device.

Eh.

[Square Ninja]

Originally Posted by ∞

Dunno if it's practical, but I imagined the sound black hole as a king of stealth device.

Eh.

Sounds pretty easy to make and use. All they're trying to do is prove/disprove the theory of Hawking radiation. They really only need to do it a few times. The real question is whether or not Hawking radiation applies to all forms of energy.

[ikkuh2]

I think it is, the only requirement of pair-creation is a vacuum, although i think it is hard to pull this off, there is no sound in a vacuum. I wonder how they want to detect the particles, since they could go anywhere after pair-creation.

[ikkuh2]

Was Einstein wrong with general relativity?

Sending photons through the earth.

[∞]

Bah. I don't know why, but I just can't grasp the concept of the MOND one.