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¤RunninginReverse¤¤RunninginReverse¤ Member, Friendly Posts: 15,828 ✭✭✭✭✭
I need something to do, and this forum's only life right now seems to be forum games and "ask me shit" threads.
SL_ND_R: __RS_S__N__
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Comments

  • YosukeHanamuraYosukeHanamura Member Posts: 894 ✭✭
    Are you ready to mario-cise?
    In modern physics, antimatter is defined as a material composed of the antiparticle (or "partners") to the corresponding particles of ordinary matter.

    In theory, a particle and its anti-particle have the same mass as one another, but opposite electric charge, and other differences in quantum numbers. For example, a proton has positive charge while an antiproton has negative charge. A collision between any particle and its anti-particle partner is known to lead to their mutual annihilation, giving rise to various proportions of intense photons (gamma rays), neutrinos, and sometimes less-massive particle–antiparticle pairs.

    Annihilation usually results in a release of energy that becomes available for heat or work. The amount of the released energy is usually proportional to the total mass of the collided matter and antimatter, in accord with the mass–energy equivalence equation, E = mc2.

    Antimatter particles bind with one another to form antimatter, just as ordinary particles bind to form normal matter. For example, a positron (the antiparticle of the electron) and an antiproton (the antiparticle of the proton) can form an antihydrogen atom. Physical principles indicate that complex antimatter atomic nuclei are possible, as well as anti-atoms corresponding to the known chemical elements.

    There is considerable speculation as to why the observable universe is composed almost entirely of ordinary matter, as opposed to an equal mixture of matter and antimatter. This asymmetry of matter and antimatter in the visible universe is one of the great unsolved problems in physics. The process by which this inequality between matter and antimatter particles developed is called baryogenesis.

    Antimatter in the form of anti-atoms is one of the most difficult materials to produce. Individual antimatter particles, however, are commonly produced by particle accelerators and in some types of radioactive decay. The nuclei of antihelium have been artificially produced with difficulty. These are the most complex anti-nuclei so far observed.

    Formally, antimatter particles can be defined by their negative baryon number or lepton number, while "normal" (non-antimatter) matter particles have a positive baryon or lepton number. These two classes of particles are the antiparticle partners of one another.

    The idea of negative matter appears in past theories of matter that have now been abandoned. Using the once popular vortex theory of gravity, the possibility of matter with negative gravity was discussed by William Hicks in the 1880s. Between the 1880s and the 1890s, Karl Pearson proposed the existence of "squirts" and sinks of the flow of aether. The squirts represented normal matter and the sinks represented negative matter. Pearson's theory required a fourth dimension for the aether to flow from and into.

    The term antimatter was first used by Arthur Schuster in two rather whimsical letters to Nature in 1898, in which he coined the term. He hypothesized antiatoms, as well as whole antimatter solar systems, and discussed the possibility of matter and antimatter annihilating each other. Schuster's ideas were not a serious theoretical proposal, merely speculation, and like the previous ideas, differed from the modern concept of antimatter in that it possessed negative gravity.

    The modern theory of antimatter began in 1928, with a paper by Paul Dirac. Dirac realised that his relativistic version of the Schrödinger wave equation for electrons predicted the possibility of antielectrons. These were discovered by Carl D. Anderson in 1932 and named positrons (a portmanteau of "positive electron"). Although Dirac did not himself use the term antimatter, its use follows on naturally enough from antielectrons, antiprotons, etc. A complete periodic table of antimatter was envisaged by Charles Janet in 1929.

    The Feynman–Stueckelberg interpretation states that antimatter and antiparticles are regular particles traveling backward in time.

    There are compelling theoretical reasons to believe that, aside from the fact that antiparticles have different signs on all charges (such as electric charge and spin), matter and antimatter have exactly the same properties. This means a particle and its corresponding antiparticle must have identical masses and decay lifetimes (if unstable). It also implies that, for example, a star made up of antimatter (an "antistar") will shine just like an ordinary star. This idea was tested experimentally in 2016 by the ALPHA experiment, which measured the transition between the two lowest energy states of antihydrogen. The results, which are identical to that of hydrogen, confirmed the validity of quantum mechanics for antimatter.

    Positrons were reported in November 2008 to have been generated by Lawrence Livermore National Laboratory in larger numbers than by any previous synthetic process. A laser drove electrons through a gold target's nuclei, which caused the incoming electrons to emit energy quanta that decayed into both matter and antimatter. Positrons were detected at a higher rate and in greater density than ever previously detected in a laboratory. Previous experiments made smaller quantities of positrons using lasers and paper-thin targets; however, new simulations showed that short, ultra-intense lasers and millimeter-thick gold are a far more effective source.

    Antimatter cannot be stored in a container made of ordinary matter because antimatter reacts with any matter it touches, annihilating itself and an equal amount of the container. Antimatter in the form of charged particles can be contained by a combination of electric and magnetic fields, in a device called a Penning trap. This device cannot, however, contain antimatter that consists of uncharged particles, for which atomic traps are used. In particular, such a trap may use the dipole moment (electric or magnetic) of the trapped particles. At high vacuum, the matter or antimatter particles can be trapped and cooled with slightly off-resonant laser radiation using a magneto-optical trap or magnetic trap. Small particles can also be suspended with optical tweezers, using a highly focused laser beam.

    In 2011, CERN scientists were able to preserve antihydrogen for approximately 17 minutes.

    Scientists claim that antimatter is the costliest material to make. In 2006, Gerald Smith estimated $250 million could produce 10 milligrams of positrons (equivalent to $25 billion per gram); in 1999, NASA gave a figure of $62.5 trillion per gram of antihydrogen. This is because production is difficult (only very few antiprotons are produced in reactions in particle accelerators), and because there is higher demand for other uses of particle accelerators. According to CERN, it has cost a few hundred million Swiss francs to produce about 1 billionth of a gram (the amount used so far for particle/antiparticle collisions). In comparison, to produce the first atomic weapon, the cost of the Manhattan Project was estimated at $23 billion with inflation during 2007.

    Several studies funded by the NASA Institute for Advanced Concepts are exploring whether it might be possible to use magnetic scoops to collect the antimatter that occurs naturally in the Van Allen belt of the Earth, and ultimately, the belts of gas giants, like Jupiter, hopefully at a lower cost per gram.

    Matter–antimatter reactions have practical applications in medical imaging, such as positron emission tomography (PET). In positive beta decay, a nuclide loses surplus positive charge by emitting a positron (in the same event, a proton becomes a neutron, and a neutrino is also emitted). Nuclides with surplus positive charge are easily made in a cyclotron and are widely generated for medical use. Antiprotons have also been shown within laboratory experiments to have the potential to treat certain cancers, in a similar method currently used for ion (proton) therapy.

    Antimatter has been considered as a trigger mechanism for nuclear weapons. A major obstacle is the difficulty of producing antimatter in large enough quantities, and there is no evidence that it will ever be feasible. However, the U.S. Air Force funded studies of the physics of antimatter in the Cold War, and began considering its possible use in weapons, not just as a trigger, but as the explosive itself.
  • ViniVini Member Posts: 3,572 ✭✭✭✭✭
    Ask me shit threads are the shit tho.
    ...Hm, usually I would add some quotes to that.

    Quotes or quotation marks? And if the former, why is that robot so heccing amazing?

  • MetronomeFanaticMetronomeFanatic Member Posts: 57 ✭✭
  • ¤RunninginReverse¤¤RunninginReverse¤ Member, Friendly Posts: 15,828 ✭✭✭✭✭

    Are you ready to mario-cise?

    I'm not even sure what exactly this is referencing. This is off to a fine and dandy start.
    Vini said:

    Ask me shit threads are the shit tho.
    ...Hm, usually I would add some quotes to that.

    Quotes or quotation marks? And if the former, why is that robot so heccing amazing?

    I'm not entirely sure what the latter question has to do with the first one?

    Nor am I entirely sure what the first question means, I'm gonna assume you're asking which one's the correct term for it. "Quotation marks" is the correct term (ironically placed in quotation marks.)


    The fact that every time humans are referred to as a "speices" consistently while the monsters are "species" is driving me nuts.
    SL_ND_R: __RS_S__N__
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  • SwingWingSwingWing Member Posts: 33 ✭✭
    edited September 13
    What would happen if Undertale's setting was in the multiverse of KILL 6 BILLION DEMONS?
  • ViniVini Member Posts: 3,572 ✭✭✭✭✭
    oh boy second question and I'm already explaining

    "Quotes or quotation marks" could go whichever way you saw fit, but if you want to know what I meant, that was which you prefer to use.

    Second part was about Quote. You know, Quote!

    Question is: Ever played Cave Story? Or any MetroidVania, for that matter.

    (also that was not ironic, but who the goose takes that word seriously anymore amirite)

  • ¤RunninginReverse¤¤RunninginReverse¤ Member, Friendly Posts: 15,828 ✭✭✭✭✭
    Vini said:

    oh boy second question and I'm already explaining

    "Quotes or quotation marks" could go whichever way you saw fit, but if you want to know what I meant, that was which you prefer to use.

    Second part was about Quote. You know, Quote!

    Question is: Ever played Cave Story? Or any MetroidVania, for that matter.

    (also that was not ironic, but who the goose takes that word seriously anymore amirite)

    I actually do not know who Quote is.

    I have not played Cave Story, nor have I played any Metroidvania-type game. They seem interesting, though.
    SwingWing said:

    What would happen if Undertale's setting was in the multiverse of KILL 6 BILLION DEMONS?

    This sounds like something worth it's own AU, but like, I don't know enough about the webcomic to go into too many details.
    SL_ND_R: __RS_S__N__
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  • SwingWingSwingWing Member Posts: 33 ✭✭


    SwingWing said:

    What would happen if Undertale's setting was in the multiverse of KILL 6 BILLION DEMONS?

    This sounds like something worth it's own AU, but like, I don't know enough about the webcomic to go into too many details.
    Not like "what if Asriel is the heir while Chara is mistaken for such", I was more into seeing how you'd reconcile the racial dynamics of both.
  • MetronomeFanaticMetronomeFanatic Member Posts: 57 ✭✭
    Are you getting around to doing that Level Of ViolencE chart if you're desperate for an excuse to be here?
  • ¤RunninginReverse¤¤RunninginReverse¤ Member, Friendly Posts: 15,828 ✭✭✭✭✭
    SwingWing said:


    SwingWing said:

    What would happen if Undertale's setting was in the multiverse of KILL 6 BILLION DEMONS?

    This sounds like something worth it's own AU, but like, I don't know enough about the webcomic to go into too many details.
    Not like "what if Asriel is the heir while Chara is mistaken for such", I was more into seeing how you'd reconcile the racial dynamics of both.
    I really don't know enough about the webcomic to go into detail for these things.

    Are you getting around to doing that Level Of ViolencE chart if you're desperate for an excuse to be here?

    Look, I'm just gonna be straightforward, dude: I don't really have interest in doing the LOVE Chart right now.

    If I do return to the LOVE Chart at some point, it's probably not going to be here, because this place is straight-up dead. I'd probably do it in a place that has more people around, y'know, so more than 5 people will read my shit.
    SL_ND_R: __RS_S__N__
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  • ViniVini Member Posts: 3,572 ✭✭✭✭✭
    Why do it for the people? Do it for yourself. Isn't having fun with your projects the most important part?

  • MetronomeFanaticMetronomeFanatic Member Posts: 57 ✭✭
    I used to crosspost a lot of my FLESHposting.
  • ¤RunninginReverse¤¤RunninginReverse¤ Member, Friendly Posts: 15,828 ✭✭✭✭✭
    Vini said:

    Why do it for the people? Do it for yourself. Isn't having fun with your projects the most important part?

    Yes, but like, at the same time, if I don't have anyone enjoying the project, that sort of starts to affect my own enjoyment of it after a while. It makes me feel like I could probably be doing something better instead of putting valuable time and effort into something nobody cares about. With enough of that, I just end up shutting the project down while feeling like I wasted my time.

    That's what happened with Dashnet City, for instance.

    I used to crosspost a lot of my FLESHposting.

    Meh... We'll see, maybe I'll put it here, too, if I start up LOVE Chart again.

    For now, though, I've got another project I'm working on. And boy howdy is this an interesting one... though I doubt a lot of people HERE specifically would be interested.
    SL_ND_R: __RS_S__N__
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  • ManiklasManiklas Member Posts: 2,827 ✭✭✭
  • ¤RunninginReverse¤¤RunninginReverse¤ Member, Friendly Posts: 15,828 ✭✭✭✭✭
    Maniklas said:

    How to revitalize dashnet?

    Get the fucking admins back here. There's nothing we, ourselves, can do.
    SL_ND_R: __RS_S__N__
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  • BrainstormBrainstorm Member Posts: 11,211 ✭✭✭✭✭
    Would you rather nut to a male, or to Bowsette?
    Choosing neither has lethal results, and will instead assign you with a bunch of cuddling toads
    "Calm your caps, bro." -Brainstorm

    the following link is the best thing that could happen to you: http://forum.dashnet.org/discussions/tagged/brainstormgame

    Currently managing a large-based forum game.. DashNet RPG! Play it now: http://forum.dashnet.org/discussion/15882/dashnet-rpg-dashnets-greatest-forum-game-of-all-time
    Dashnet RPG Pastebin: https://pastebin.com/6301gzzx
  • ¤RunninginReverse¤¤RunninginReverse¤ Member, Friendly Posts: 15,828 ✭✭✭✭✭

    Would you rather nut to a male, or to Bowsette?
    Choosing neither has lethal results, and will instead assign you with a bunch of cuddling toads

    ...

    I am bisexual. The first option is of no consequence to me what-so-ever.
    SL_ND_R: __RS_S__N__
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    SOUNDCLOUD
  • ViniVini Member Posts: 3,572 ✭✭✭✭✭
    Will you still call her Bowsette after learning that the correct portmanteau is Peachowser?

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