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/sci/ - Science & Math

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2948738 No.2948738 [Reply] [Original]

http://www.physorg.com/news/2011-03-physicists-antihelium-nucleus-heaviest-antinucleus.html

In 1932, scientists observed the first antimatter particle, a positron (or antielectron). Since then, scientists have observed heavier and heavier states of antimatter: antiprotons and antineutrons in 1955, followed by antideuterons, antitritons, and antihelium-3 during the next two decades. Advances in accelerator and detector technology led to the first production of antihydrogen in 1995 and antihypertriton (strange antimatter) in 2010. Now, scientists with the STAR collaboration at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory have observed another state of antimatter for the first time: the antimatter helium-4 nucleus, which is the heaviest antinucleus observed so far.

How long until we have a periodic table of anti-elements?

>> No.2948762

We already do - just stick "anti" in front of the regular periodic table.

Among themselves, anti-elements have chemical properties identical to elements.

>> No.2948787

when i meet anti-me we're gonna fuck.

and it's going to be explosive.

>> No.2948795
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2948795

Anti-thorium

>> No.2948806
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2948806

>>2948795

>> No.2948819

>>2948738
By the way, do antiparticles have negative mass and negative energy?

>> No.2948845
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2948845

>>2948819
Yeah, and they have anti-gravity properties too

>> No.2950386

bump

>> No.2950406

>>2948819

No, in fact they're almost exactly the same as normal particles, except that they have positrons instead of electrons.

>> No.2950414

>>2950406

Sorry I meant to say that they simply have the opposite electric charge of their respective particle, electrons/positrons being just one example.

>> No.2950428

>>2948819
they have positive energy and positive inertial mass, but if CPT symmetry holds in curved spacetime then that implys it will attract each other, put mater and antimater will repel one another.

>> No.2950440

>>2948845
Then, the'yre not really "anti" particles. Just a different kind that exhibit similarities, only negative.

I don't like binary thinking...

>> No.2950447

Do positrons react with protons? Do they strong force each other?

>> No.2950449

THE ANTI-PROTON SHOULD BE RENAMED THE NEGATRON.

>> No.2950455

scientists recently discovered antikryptonite which goes a long way to explain Krypton's destruction

>> No.2950474

>>2948738

lol @ OP's pic.

seen a few of those economic guys in my classes

>> No.2950479

Thank you for the image OP