Electronics > Beginners
A theoretical question about mater/antimatter and capacitors
Mechatrommer:
here what happens...
in short, nothing happens because some of the matter plate anihilates with the antimatter plate, and the energy produced burn down the rest of resistor, battery and the operator. leaving world in great recession after spending lots just to produce the antimatter plate and wire in the first place. even if it does something happen, electromagnetic from the antimatter trap tank will deviate electrons matter to unknown or irrelevant direction. and in both cases. no practical or usefull application. let the men do their job...
RoGeorge:
Any equation without explaining the terms can mean anything.
Care to explain it, or at least link where from did you took that?
The matter and antimatter plates are separated by vacuum.
How can matter and antimatter annihilate through vacuum?
Jwillis:
This of course puts aside all laws of physics .
Lets assume that you conquered matter/antimatter annihilation. So you now have an antimatter capacitor charged with positron's. And assume that you developed a way to transfer those positrons to a conventional circuit without causing a massive explosion ,the charge would flow opposite of a conventional capacitor so your polarities would have to be reversed. But you would not achieve anything better than a conventional capacitor.
atmfjstc:
Way I see it, as long as you can keep each capacitor's plates from touching each other (you'd have to use vacuum as a dielectric, of course), and not get the thing hot enough to start thermionic emission, everything should work just as in the "all normal matter" case. Electrostatically, a positron being pulled closer is the same as an electron being pushed away. And as someone mentioned before, electrons (or positrons) won't just fly off the metal into space by themselves.
Quite how you would go about keeping the plates separate is the real question, since in a capacitor the plates will attract each other when charged. In a real vacuum capacitor, the plates are secured against the same mechanical assembly, so they ARE touching each other, just not through anything conductive. This is not an option here. One side being made of antimatter pretty much means it must be kept floating in a void vis a vis the other side. For a moment I thought you could stabilize things with a geometry like this one:
-------| |--------------| |------
| ^antimatter^ |
| |
--------(~)---------[R]----------
With all wires being rigid. But this is an unstable equilibrium since the force between the plates increases quadratically. Only way you could keep this system in one piece is by dynamically adjusting the position of one side of the system with some rocket (anti-rocket?) system, or by pushing it with photons. All seems very impractical just to charge a capacitor...
CatalinaWOW:
You really have to carefully define your problem to get a sensible answer.
Case one. The left plate has conventional electrons. The right plate has a similar number of anti-matter electrons (positrons, which have a charge of +1). From an electric field standpoint this is identical to the conventional case. You can't talk about ohms law because any current which flows will result in anti-matter and matter coming in contact with large release of energy. The only way to construct such a capacitor in principal would be to make a normal matter capacitor and an anti-matter capacitor, and then pull the plates of each apart (either magnetically, or since this is a thought experiment, with tractor beams) and then bring the appropriate matter and anti-matter plates into proximity. One pair will have a surplus of electrons on one plate and a surplus of positrons on the other. The other pair will have similar deficiencies.
Case two. The left plate has conventional electrons. The right plate has a shortage of positrons. In terms of shortages and surpluses this is analogous to a conventional capacitor. This pair can be assembled in manner similar to that used in case one. In this case the electric field is zero between the plates (assuming the other pair of plates has been moved "infinitely" far away. But you still can't put a wire between the plates because it again will lead to an explosion. Even though there will be no large scale electrostatic forces bringing the two types of matter together, at some point in the wire the matter type has to change and that interface would be unstable.
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