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Anti-Matter Matter

I still can’t hear anti-anything without remembering this cartoon I saw in a sci-fi mag as a kid.

Sir Isaac Newton walks through a garden. As he passes under an apple tree, he suddenly surges upwards and bumps his head against an apple.

The caption says: “Newton discovers the law of anti-gravity.”
 
stephen55 said:
When Scotty gets more dilithium crystals...preferably ones without cracks at the base.
Click to expand...

but you do fly higher with crack at the base...

btw, them were Canajun psychicists who done trapped that anti-matter!

C'est vrais, Stephen, les Canadiens sont les meilleurs trappeurs!
 
So what?

"Any hint of CPT symmetry breaking would require a serious rethink of our understanding of nature,"

The "C" of CPT involves swapping the electric charges of the particles. "P" for parity "is like looking in the mirror," CERN explained in a press release. And "T" means reversing the trajectory of time.

At it's heart, physics is all about symmetries; that is, under certain transformations, aspects of a system are unchanged. (If you rotate a sphere, nothing changes. Not only do you still have a sphere, you have no way of determining that there ever was a rotation.) Theoretical physics says that there was a time when all the forces (gravitation, electromagnetism, the weak nuclear force, the strong nuclear force) were all identical. This existed at the moment when the universe sprang into existence.

Symmetry breaking is the motive power underlying all differences in physical law. (Why is gravity such a weak force.? Why is the strong nuclear force so incredible strong...but only over incredibly short distances?)

Spontaneous symmetry breaking occurs in a situation where, given a symmetry of the equations of parity, motion or time, solutions exist which are not invariant under the action of this symmetry. (Simplistically speaking, a transformation does create differing end points.)

So what?

The universe exists because the four fundamental forces are different. Physics tells us that at one point they weren't but now they are. Figuring out how that happened is like figuring out why the universe (and us) exists.

In order to do that you have to recreate the conditions and energies that existed an infinitesimally short time after everything started. The only place (on Earth) where that can happen is at the Large Hadron Collider.

Anti-hydrogen...hydrogen antimatter...yes it is important. It's one more step in understanding why we are here.
 
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Well, where else would we be if not here? :confused::confused:


I'm with 3. I want star ships because I'm looking to book passage to the planet Cretaceia . . . and I'm taking a really big rifle!
 
voluptuary_manque said:
Well, where else would we be if not here? :confused::confused:


I'm with 3. I want star ships because I'm looking to book passage to the planet Cretaceia . . . and I'm taking a really big rifle!
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I believe you'll be wanting something like this.

http://www.doublegunhq.com/bouchet_files/image002.jpg

The .577 Tyrannosaur....

http://airbornecombatengineer.typepad.com/photos/weapons_fireams/577tyrannosaurdimensions.jpg

Good for anything on Cretaceia and also for excavating railway tunnels.
 
When hunting dangerous game, as in combat, reliability is everything. The record of rimless cartridges in double rifles is not perfect. Far better the rimmed Nitro Express. And given that the usual estimates of a body mass of 5-7 tons is probably an over-estimate (Boardman T.J., Packard G.C., Birchard G.F. (2009). "Allometric equations for predicting body mass of dinosaurs". Journal of Zoology 279 (1): 102–110.) since the big carnivores were built like giant eagles, I feel secure that two quick shots delivering 8900 ft. lbs. of muzzle energy (Barnes, et al.) should suffice. Now if one were trying to bag a sauropod, nothing less than a .50 RMG would do. Those things were big!
 
http://arxiv.org/abs/1104.4982


by Adam Frank
http://www.npr.org/blogs/13.7/2011/...-half-anti-matter-trapped-for-15-minutes#more

...Last year scientists at CERN, the main European particle physics laboratory (also the home of the LHC), were able to form anti-hydrogen and keep it around for a whopping two-tenths of a second. That was a world record. They achieved their milestone by finding novel ways to keep the anti-hydrogen from hitting the walls of the container and annihilating itself.

Now the same team (called the ALPHA antimatter experiment) has extended their anti-matter trapping out to 16 minutes and 40 seconds. That is a 5,000-fold increase in confinement time. After decades of getting nothing more than a fleeting glimpse of the stuff, keeping a treasure trove of anti-hydrogen captive for that long is both very impressive and very important.

The strange existence of anti-matter and its radical imbalance as a cosmic constituent is a fundamental mystery that has persisted for eight decades. With the ALPHA team's achievement, we may finally be poised to understand not only the universe that is but also the universe that might have been...
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"Probably" is an over-statement. "Possibly" is closer but the reality is that apex predators, like lions and grizzlies, are opportunistic. Whatever they can get, they eat. Doesn't matter whether it was alive recently or several days ago. Besides, if it's a chicken ancestor then those backstraps ought to be delicious!
 
3113 said:
But they'd stay chicken-sized, right? :confused: Might make cool pets.....
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Ever been around chickens in bare feet and shorts? A chicken attitude with sharp teeth doesn't sound like a good pet to me! Besides, what if you started with a cassowary?
 
voluptuary_manque said:
Ever been around chickens in bare feet and shorts? A chicken attitude with sharp teeth doesn't sound like a good pet to me! Besides, what if you started with a cassowary?
Click to expand...

I haven't seen chickens in shoes at all, not even sandals, and I didn't know they wore shorts. If I see any chickens in bare feet and shorts, I'll be sure to keep my distance, Bear.
 
Handley_Page said:
Which test was that ?

I agree with Bear; a Holland & Holland .700 makes far more sense, if you are on foot.
The .577 might make for a good backup, though (carried by your bearer).

What about a converted 20mm aircraft cannon; on the Jeep.
Click to expand...

Yeah? What do bears and dragons know from prehistoric monsters unleashed by the powerful radiation from pasto-antipasto detonations? I've seen the movies: 140mm recoiless rifles are ineffectual, and even 150mm Howitzers barely dent their armoured hides! Get serious, guys, or get eaten!
 
Tio_Narratore said:
Yeah? What do bears and dragons know from prehistoric monsters unleashed by the powerful radiation from pasto-antipasto detonations? I've seen the movies: 140mm recoilless rifles are ineffectual, and even 150mm Howitzers barely dent their armoured hides! Get serious, guys, or get eaten!
Click to expand...

There's only one answer to that, Tio. A modern 27mm aircraft canon. The variety of projectiles is awesome, from straight HE to AT. It would give any dinosaur a nasty headache if nothing else.
 
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