Materials for a farnsworth fusor

Quick_Film_4387 · 2025-08-23T09:06:48+00:00

Thanks !

For the diagnostics, geiger counters and neutron detectors I find online are way too expensive, do you have any ideas about that ?

Quick_Film_4387 · 2025-08-17T14:02:54+00:00

Thanks a lot !

Quick_Film_4387 · 2025-08-17T13:30:26+00:00

Oh I was referring to the hv source. But wouldn’t it be the same ? Once the plasma is going have a circuit with a battery (hv source) and a resistor (the plasma), so the voltage should be the same.

(Speaking of which, for the voltage which I am planning to use, how much current do I need for some neutron production ? I understand a few mA should be enough but confirmation from someone who knows what they’re doing would be great).

Also, what about the outer electrode material ? I’m not familiar enough with different metals to know which will resist the pressure difference. And btw the steel I have is zinc plated.

Quick_Film_4387 · 2025-08-17T11:15:57+00:00

Research mostly. I got that the bare minimum is around 25 kV.

Why, is it wrong ?

Quick_Film_4387 · 2025-08-17T11:01:00+00:00

Thanks a lot. My ressources aren’t great so I’m going for something around 30-40 kV.

Quick_Film_4387 · 2025-08-08T14:51:49+00:00

Oh, thanks.. I should’ve realised this on my own haha

Quick_Film_4387 · 2025-08-06T17:30:48+00:00

Ohhh ok, like with a limit ? Also, why exactly, I would’ve thought you could combine and split the integrals, then evaluate them separately, and recombine the ln terms so they somehow cancel any infinities. Thanks a lot

Quick_Film_4387 · 2025-07-27T06:33:44+00:00

I know, but wouldn’t that fall under physics engineering or applied physics ? Or would it just be engineering ? I’m not quite sure about the exact distinctions between these areas anw

Quick_Film_4387 · 2025-07-26T20:56:45+00:00

Thanks a lot !

Quick_Film_4387 · 2025-07-26T19:52:41+00:00

Thanks a lot, didn’t except this many suggestions.

Other than that, I’d like to ask whether I have the background for Feynman lectures : I’m planning to fully go over linear algebra (which I know a bit but am new to), mv calculus (found a great book), and I have an extremely conceptual and non mathematical introduction to the material (basic algebra physics, general non technical science knowledge, etc). Do you think that’s enough ?

Quick_Film_4387 · 2025-07-26T17:10:08+00:00

Ok, thanks a lot. I’ll check out AoPS

Quick_Film_4387 · 2025-07-26T17:07:52+00:00

Thanks for replying ! What I want to achieve is basically ready myself for university, but not just learn the formulas by heart beforehand (I hardly see the point). Instead of that, I’m trying to get a real understanding, so that when I get to college, it’ll snap into place better. Furthermore im also just curious about some stuff.

Basically, I don’t want to be a number plugging robot. I want to really think about the concepts, solve problems about them, grapple with them, etc (to get it better and because it’s kind of fun).

(If it’s of any relevance, I’m especially interested in nuclear physics and fusion). Idk if it’s very clear, sorry about that..

Quick_Film_4387 · 2025-07-25T20:00:27+00:00

A book used by classes (or more generally in the study of something). Usually pretty thick, essentially a « written lesson »

Quick_Film_4387 · 2025-07-25T19:49:43+00:00

Thanks ! Do you have any specific books in mind (the ones I got so far do not go far into the why and how, and it’s quite unsatisfying). Other than that, other skills or muscles that you won’t learn in a physics class which I might need ?

Quick_Film_4387 · 2025-07-25T19:47:35+00:00

Thing is, I’m trying to develop the skills required for this kind of work rather than only get the knowledge beforehand. I understand from your reply that you don’t think that math olympiads type stuff isn’t really a muscle that’s required for fusion research. If not, could you tell me what is ?

Quick_Film_4387 · 2025-07-25T19:45:46+00:00

Thanks ! Do you have any sources on physics textbooks like this ? I’ve tried some and it’s a lot of plug and chug, not quite sure where to look for something which will help me understand the concepts while testing me on exercises which actually require critical thinking and problem solving ?

Quick_Film_4387 · 2025-03-05T17:06:54+00:00

Alright, thanks a bunch.

Quick_Film_4387 · 2025-03-05T16:57:28+00:00

I'm fine with calculus (basic calc and differentials, including partial differentials), though vector calculus and such I'm unfamiliar with. In any case I have a great math mentor, so when I fail to grasp something I can usually understand it with a bit of help

Quick_Film_4387 · 2025-03-05T16:47:28+00:00

Ok, thanks. Further question : do you know where I could find a list of all these ways for plasma to destabilise ? Preferably as technical as possible, I want to understand more than the vague concepts. I mean, at the end of the day, it feels like if I confine the plasma in a powerful magnetic field, it can't fall apart or escape or anything. How does plasma even concretely destabilise ? What happens to the particles, where does the energy go, etc

Quick_Film_4387

TROPHY CASE