[delt0r]

Err not really. I read the original paper. Its a lot of assumptions and hopeful engineering. Lets not forget that these designs haven’t even done as well as tokamaks in experiments.

Show me the data. They don’t have any that back up or otherwise support the claims.

[delt0r]

What does “no black holes” have to do with no big bang. Right from the get go, the idea of a mathematical singularity being something that is not physically real has always been around. Black holes are interesting from that perspective in that you don’t need a singularity for them to exist. Consider the density of a black hole as a function of mass.

There is nothing about the big bang that requires black holes to exist.

[delt0r]

Why doesn’t anyone read the dam thing. No they reported the same force. Since the only force they measured was only twice what the force meter could measure there isn’t any force measured at an order of magnitude less.

Also the force was so small that it is just not credible with an atmosphere.

It is very sloppy experimental work at the very least, and not even close to extraordinary evidence required by the claims. The original claims and theory may as well be a free energy youtube video with just how bad they get it wrong.

[delt0r]

It is very flawed. The paper is just a mess and wrong (they leave out forces). The experiment was also flawed to the point of credibility of those involved. You can’t measure that sort of force without a vacuum. Also the control also produced a force. So the experiment didn’t prove anything.

[delt0r]

Right. Yea power-station level cooling is about overall lifetime costs, in fact location of modern power plants is often selected based around cooling. Typically using more area does not cost much compared to using say bigger heaver, but cheaper and easier to maintain cooling solutions.

[delt0r]

It absolutely is not clear it can be done at all. Missions of amps, 10kV or more. And certainly not without maintenance. HVDC substations and systems are not maintenance free.

[delt0r]

You mean the liquid hydrogen cooled combined cycle engine? Yea does not solve the same problem.

[delt0r]

Industrial scale cooling is indeed not small and also not light, mostly because that’s the cheapest way to make it on the ground. If fact far to many people here obsess over the FF being able to fit in a garage or some such. Even the required shielding would preclude that. So yea the kind of heat that needs to be dissipated is significant and won’t result in a compact design. But on its own it should not be a problem.

The problem will be if all that heat is in hard to remove places. ie in the Onion for example.

Assuming it works of course.

[delt0r]

This is *nothing* like a water heater. If you can’t see that then there is nothing i can do that will convince you otherwise.

Just show me a high voltage high current high rep rate switch with a life time in the Millions of firings… You can’t because at best these sort of switches have lifetimes in the 1000s of reps.

[delt0r]

markrh wrote:

Like most things, one of the larger costs for an FF generating station will be personnel, and the way to minimize that cost is to centrally locate multiple devices, and have those overseen by a small staff, rather to have many distributed small generation stations that each need their own staff.

One or two reactors for a small community would not require a full time staff to maintain. The system can be monitored remotely and maintenance would only require periodic refueling and electrode replacement.

Yes it would. You are not going to get a bunch of highly qualified persoanl to only work part time, or train up for just a part time job. These things need maintenance no matter how idealistically auto-magic you make them. Just a pulse power supply to run these things is something that doesn’t even exist right now, and any currently plausible design is going to need a lot of maintenance. The circulating power is much larger than the output so you have a lot of high power, high voltage electronics. This stuff doesn’t just run like in some movie. It needs maintenance.

It will need maintenance by highly specialized and qualified staff, and they will have plenty to do.

On the other note. I don’t really understand the whole “centralized power is evil corporations and stuff” mindset. We have centralized power because it make a *lot* of economic sense. FF would not change that.

Assuming FF even works of course. And that is still a big IF.

[delt0r]

Well you could learn some electrostatics yourself you know. Its not that hard and any stage one uni book or higher level school text book would have everything you need to know. Both about fusion and cross sections and electrostatics. There are some free ones online these days as well.

|But sigh. Understanding and learning the problems is something so many people just don’t want to do. They have all these “good ideas” as if no one else has thought of them.

Long story short non neutral plasma means there are (in this case) more ions than electrons, and they repel each other. The net charge enclosed in a sphere gives you the electric field at that surface, and ions will be forced out of the sphere by that electric field. To “heat” ions and propel them into this sphere would need at less this much electric potential. You calculate that potential using Gaussian surface. That is left as an exercise for the reader.

You could add more electrons. But then the ions hit the electrons and convert all that energy into xrays, cooling the plasma. Even with no electrons it still doesn’t work. Quite simply you scatter off the ion far more often than you fuse. As a result the ions quickly thermalize and your back to Lawson criteria.

[delt0r]

As a side note. The current trend with grids its moving towards HVDC at least for the trunk lines. These days solid state DC DC converters are not that much more expensive than similar rated transformers. ps i did 3 years EE and spent time working on the Grid back in my home country.

[delt0r]

Beam fusion, which what the Farnsworth is, can’t get around the simple fact that your more likely to bounce of other ions rather than fuse. Many many times more likely. This is the so called star mode, and I have not read any credible reports on anything working after power down, that is not even consistent with its claimed working principals.

Non neutral plasma has a well defined potential you need for confinement. Its scales with the amount of charge enclosed and the surface area. Even the size of the moon is not enough for any reasonable fusion rate.

[delt0r]

On of the reasons the capital of a power station is so high is that .1% gain in efficiency is worth a lot of money over its life time. If the fuel becomes cheap then you don’t need to worry about that .1%.

I know people here like to think that steam thermal cycles etc are primitive. They are not. They are highly optimized and rather efficient these days. And lets not forget the FF *needs* direct conversion efficiencies just to break even.

[delt0r]

Err guys, we are talking about something as small as 60 atoms. Even stuff full of hydrogen its gonna be nothing for fusion. At the temperatures you need its not going to be a bucky ball anymore either.

Also Hohlraum don’t reflect xrays in the “mirror” sense. They absorb xrays or other energy and get so hot they radiate in xrays.

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