joigus

I'll give you a simpler numerical example. Suppose you've got, \[2x-t=5\] \[x-2t=3\] and you want to solve in x and t. You can do the 1st equation minus twice the second: \[-t+4t=5-6=-1\Rightarrow3t=-1\] (you get only an equation in t) And the second equation minus twice the first: \[x-4x=3-10=-7\Rightarrow-3x=-7\] So the solution is, \[t=-1/3\] \[x=7/3\] Now, you've got to do the same, but instead of 5 and 3 on the right-hand side; you've got t' and x' involved. But it's the same idea. You must eliminate t in one equation and x in the other. Does that help?

Hey, just to let you know I had the Russian Covid-19 vaccination yesterday and can tell you there are absolutely no negative sideffski efectovski secundariosvki Кто может это прочитать, это уродливый парень .Привет друг Антонио !!

Good question. Recent hypothesis suggests part of it may have formed from minerals already here. Some mantle processes can release water apparently: https://www.pri.org/stories/2015-01-10/how-earth-made-its-own-water-out-rocks This came from a quick Google search, but I've heard about this idea in a documentary, and I think experts are considering it as a distinct possibility. I suppose, as any complex phenomenon, calls for a complex answer. We humans tend to search for unique cause, while many natural phenomena resist simple analysis because may have complex causation. But Studiot has hedged the bets when he's said,

Where you write y, it should be (in standard notation), \[\gamma=\frac{1}{\sqrt{1-v^{2}/c^{2}}}\] Then you would have, \[\sqrt{1-v^{2}/c^{2}}t'=t-vx/c^{2}\] \[\sqrt{1-v^{2}/c^{2}}x'=x-vt\] It's Gauss reduction of linear equations from here quite straightforwardly. If you need more clues, tell me. Edit: Maybe Gauss elimination is a more familiar name...

A good question is worth somewhere between 5 and 10 good answers. I think this is a good question. In my next-to-blank-slate mind, the Sun's magnetosphere could potentially protect us from supernova radiation, when the time comes. As the situation stands, the most potentially harmful radiation that we get comes precisely from the Sun. But it's not inconceivable to me that its magnetosphere could act as a screen for us.

I've been imprecise here and John especially, and others too, have been gentle enough not to correct me, because the point wasn't really essential. Hydrogen bonds are bonds between hydrogen an polar molecules, rather than ions. But anyway. No. Nothing which deserves the name "hydrogenesis" and nothing having to do with ferromagnetism, or hydrogen bonding to charges would be the panacea for anything that has been pointed to. The OP is far too vague and assumes too many inconsistent/unproven assertions to be worth considering an explanation or serious proposal of anything IMO. At the very least, many claims, all unsubstantiated.

There still is a need for the BB. Extrapolation backwards of receding galaxies makes inevitable some kind of bang. The cosmic background radiation, the remnant of the explosion, is the best evidence. It has exactly the frequency spectrum of light filling all of space and continually cooling off (at different rates following known phases of cooling) for 13.7 billion years give or take. So yes, there must have been a big bang.

Another Dali factoid: He doodled on the cheques so they would never be cashed: https://theuijunkie.com/salvador-dali-cheque-restaurants/

Hype is rampant.

Asserting that a nuclear bomb or any other human activity would change the Earth's magnetic field is ridiculous. The field depends on currents within the core. How would a bomb affect that? Bonding of hydrogen to ions does have a name; it's hydrogen bonds, and life relies heavily on it. Nobody would call it hydrogenesis because it's nothing to do with creation of anything, much less creation of hydrogen. Nothing to do with ferromagnets. And I concur with questions listed above.

Because the main arguments have been established more than satisfactorily enough by Hanke, Eise, Janus, and Swansont, IMO, I would like to concentrate on the fact that the world michel123456 is trying to picture would be awfully incongruous and we wouldn't have an invariant picture of phenomena. Relationships between events would be distorted depending on how fast you're moving with respect to particles/fields. For some collisions, we would see one particle bouncing off before the other colliding particle reached there. The underlying mathematical reason is that the Lorentz group with the choice c=infinity is perfectly reasonable and gives homogeneous transformations of intervals that make timings and placings of phenomena mutually consistent. Relationships between events would be congruences. c finite and invariant would be OK (Einstein's relativity) c infinite (thereby invariant) would be OK (Galilean relativity) But taking c finite and observer-dependent is not. It does not produce anything in the way of congruences of events.

Just to add to the geologist/geophysics POV, that's been suggested, explained/given references for by other members: Cross checks make for a very robust understanding. Formation of Pangaea is related to the biggest extinction event on record besides snow-ball Earth: The Permian extinction. Intuitively, it's not hard to understand that the formation of a supercontinent the size of Pangaea would have resulted in, at least: 1) Most of the inland extension being desert (little or no rain) 2) High-intensity long-term vulcanism (the so-called Siberian traps) 3) Water circulation in the oceans reduced to a very-little-local-variation, very-slow pattern Very, very dramatic change in global climate for sure. That could and would have done it. This becomes the more compelling as you realise how much present and recent-past biodiversity depends on water circulation patterns in the oceans. https://www.nationalgeographic.com/science/prehistoric-world/permian/ https://phys.org/news/2013-11-biggest-mass-extinction-pangea.html https://www.science20.com/news_articles/pangaea_formation_linked_permian_mass_extinction-123693

Anyone in mind? Though I think we need much more than that to deal with Qanon. Ideological/mythological detox is the hardest.

I would have chosen "understanding," "empathy" => "sympathy," etc. Looking at the world with the other person's glasses, if only for a moment of consideration. I totally agree that "love" is a good stand-for in the thinking. My problem with "love" is that it's been such an overused word, and it's just too easy a substitute for many different human emotions. Most people are really full of it, but try and do the experiment of telling them to be more concrete, to really put their actions where their mouth is: help, empathy, forgiveness, understanding, etc. Those are so much harder to master, because they require you to go from the abstract to the concrete. Remember Oliver Cromwell? "Love the sheep, love the Sun, blah, blah" In the meantime he was sending soldiers and police to keep people's thoughts and actions under control. "Love" is a very suspect word for me. Absolutely, and back on topic. I'm sure the Spanish Inquisition was full of the word love too!

I had to. I must deal with both delinquents and academics. Humour has helped me with both. For Qanon believers, I don't know what kind of humour would do the trick.

LOL. I'm not sure that would help: https://en.wikipedia.org/wiki/Adolf_Hitler#Early_adulthood_in_Vienna_and_Munich Part of the problem seems to have been that he was a frustrated artist. https://en.wikipedia.org/wiki/Paintings_by_Adolf_Hitler

Maybe not all that revealing, as it looks very much like the caustics of clusters and superclusters of galaxies, and these are supposed to have clustered around DM, but beautiful to look at nonetheless. https://sciencesprings.wordpress.com/2020/09/07/from-harvard-smithsonian-center-for-astrophysics-scientists-zoom-in-on-dark-matter-revealing-the-invisible-skeleton-of-the-universe/ The possibility of detecting radiation from collisions seems the most interesting claim:

So do I. I have nothing against my grandpas. I never met any of them. Chances are even if I met them I'd leave them alone. Corolary: Einstein-Rosen bridges are possible in my world-line. Just to be useful: https://www.scienceforums.net/search/?q="time travel"&quick=1&type=forums_topic

Mathologer (maths)

I don't think so. It is an honest question and it makes sense. The only issues that I see are that it's been asked before in these forums (if I remember correctly) and that rather than Other Sciences it may belong in Speculations or Relativity. I will pass on the physics part and concentrate on your question: That's easy. I'd go back to my youth and become the best inside-trader of all time, become rich and do all within my power to make Donald Trump go bust. Then I'd go to Hitler's teenage years and make him addicted to pot. Then... You get the idea.

None of those is very usual in my neighbourhood. Where I grew up, I would've been beaten to within an inch of my life just for saying "I don't care for your schadenfreude." "Don't be so epicaricacious" wouldn't have fared much better, TBH. The problem with humour that tries to be too "gentle", "inclusive", "non-discriminatory", politically correct, etc.; is that it's not very funny; nor is it very convincing, IMO. Maybe that's why humour is an art, perhaps. I do believe in its power to convince, though, if done right.

The last thing you want is for them to be able to concentrate. Distraction camps would be better.

I found this beauty on the web today: https://www.freshdaily.ca/travel/2020/01/pingualuit-crater-quebec-canada/ ------------------------------------------------- Some facts from http://craterexplorer.ca/pingualuit-impact-crater/: Pingualuit Crater Lake, Québec. Pingualuit ᐱᖑᐊᓗᐃᑦ is an Inuit word meaning pimple. Ironically, Pingualuit Crater Lake is said to have the purest freshwater on earth. The crater surrounding the lake was formed by a meteorite over 1.4 million years ago in the Pleistocene Epoch. The meteorite evaporated on impact in an explosion which melted thousands of tons of stone and wiped away all life for hundreds of kilometres around the crater. Local Inuit people consider this unusually calm place to be a site of extreme power, where one comes to revitalize oneself. In order to protect this unique impact crater, Pingualuit National Park was established in 2004. Photo Credit: NASA -------------------------------------------------- List of lakes that formed as a consequence of meteorite impacts: https://time.com/4371446/these-tranquil-lakes-are-actually-ancient-impact-craters/#:~:text=Clearwater%20Lakes%20(Lac%20%C3%A0%20l,Eau%20Claire)%2C%20Quebec%2C%20Canada&text=About%20290%20million%20years%20ago,in%20Quebec's%20largest%20national%20park. If anybody has been there or has anything more to say, I'd be very interested to read about it.

I was a little confused when he started talking about fighting height with height. It became clear when I started listening to it from an Antipodean point of view. 🤣 "Love" is perhaps not the word I would have chosen for the brilliant point he makes, but I understand. As to Trump and his only-too-obvious scratching anybody's back as long as they scratch his... The only possible antidote I see is education. Not his, it's too late for that. As to his ilk, it's too late too: Once people are in their forties+ they're just too set in their ways. I hope it's not too late for the upcoming generations. Good standards of education that only the most ignorant of course will fear as indoctrination, ignoring the extent to which they have been indoctrinated by others. Education in critical thinking is critical.