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Jester's license in Germany: Zölle = Trade Tariffs Klima ... = climate change(?) Massendeportationen (?) = Mass deportations And no, Annex-Ionen are no ions of annex, but annexations It is said jesters say the truth... And yes, I am very angry and very worried. WW2 is forgotten...

Trump would like to carve up the world between three strongmen leaders: himself, Xi and Putin. So he wants to annex Canada and Greenland, take back the Panama Canal for strategic access to both coasts and oceans by sea, get out of entanglements in Europe, which he sees an economic rival and nuisance with all its pathetic concerns over outmoded ideas like democracy and social welfare - and let Xi have Taiwan, once he has got the chips being made in Arizona. If Putin fights with the EU, so much the better. It's Orwell's vision of Oceania, Eurasia and Eastasia.

That's nice for them. But not really important. https://en.wikipedia.org/wiki/List_of_countries_by_thorium_resources Plenty of countries have large stocks of it. (Even the UK has a bit)

I think you’re right. With their last post it’s clearer to me what their misconception is. The wire’s length is only contracted in the electron’s frame, not the lab frame, so there’s no reason to expect the result they claim.

Have you misunderstood what the post you quoted was saying? I felt it was criticizing Trump's greedy eyes and likening his approach to that of Russia.

Yes, the good thing (if there is anything "good" about this disaster) is this shows German people are alive to the seriousness of the sudden switch in alliances. We will all (and I mean the UK and Norway plus the EU) need to put our hand in our pocket to fund a rapid rearmament of Europe. Taxes must rise and we need a lot more of those excellent German panzers. Not only to help Ukraine but to defend the eastern boundary of the EU, especially Poland and the Baltics. The USA is no longer an ally and could easily become the enemy, at least in terms of intelligence sharing and cyber warfare. We have to kick the US out of the Five Eyes system. Anything we tell them may go straight to Moscow.

I can see your point, and you are of course right. The kind of density I had in mind though was a different one - I took the balls to be extended objects, and mentally considered the ratio between ball radius and tube length, ie which proportion of the tube volume is occupied by each ball. Since both are length-contracted by the same factor, this ratio does not change. In my defense, I tend to have a tendency to seek out invariant quantities when looking at relativistic scenarios. But I don’t think that’s what the OP has in mind, unless I’m still misunderstanding him. He is comparing the same circuit from the same frame, only with current off and on, and argues that because the electrons are in motion, the distance between them decreases, and thus there’s a larger net negative charge in that section of the circuit because there are more electrons in that same length of wire. He never mentions the rest frame of the electrons, nor the EM fields. What I’m saying here is that the distance between the electrons doesn’t change just because you turn on the current, because the observer is still stationary with respect to the circuit; there’s no length contraction of distances in the wire in the observer’s frame. In other words, the total amount of charge is the same, it’s just that this charge is flowing rather than standing still. I have, but I don’t think that’s what the OP had in mind, see my comments above.

Sorry, I don't understand why you are asking such stupid questions. The prices of smartphones are decreasing because of the growth of technologies, but this does not mean that the people are becoming richer. Since the technologies are unable to produce space, the prices of earth and houses still indicate the real incomes of people.