Everything posted by exchemist
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Magnetic propulsion (split from How does quantum mechanics affect man-made space exploration?)
What do you mean by "quantum magnetism" in this context?
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Particles Being Points is in Conflict With Them Being Something! [WRONG AGAIN]
But they are NOT physically realisable. Field lines are a construct, as I said in my previous post, rather like the contours on a relief map. Like field lines, contours are not allowed to cross, but they can touch (at precipices and cliffs). Field lines are a way for us to picture how the field is distributed in space, that's all. They are not really there. When you go walking in the hills, you don't seen any contour lines, do you?
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Particles Being Points is in Conflict With Them Being Something! [WRONG AGAIN]
No. Don't forget these "lines" (which are just a construct to show how the field behaves) are deemed to be of zero thickness. So they cannot "overlap", unless they actually cross. Which they obviously don't if they emanate from a single point. They simply "tend towards" touching, as you trace them back to the origin.
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Particles Being Points is in Conflict With Them Being Something! [WRONG AGAIN]
Ballocks. If they start from a common origin of course they don't cross.
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g/G = 1 AU. Discuss
Can you show how you get these results?
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g/G = 1 AU. Discuss
No, let's start at the beginning. Why did you start this thread with g/G = 1 AU? What relation does it bear to any of the above?
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g/G = 1 AU. Discuss
Nobody thinks g is universal. It quite obviously isn't. F=mg leads to different F for a given m, depending on where you are in relation to the centre of the Earth. In fact that is one of the things Newton's Law of Gravitation correctly predicts. It is beginning to look as if you do not understand the difference between Newton's 2nd Law of Motion and his Law of Gravitation. You seem to be confusing g and G, in other words. This is fairly - how shall I put this? - strange for someone claiming to be doing research on gravitation.
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Neutrino Disconnect
I was wondering that.
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Neutrino Disconnect
This looks quite mad. To pick two of the most obviously wrong-headed assertions:- - There obviously is evidence, all around us, of attraction between masses. If there were not, what would stop objects on the Earth's surface, including you, from floating off? Invisible velcro? - Zero point energy has nothing to do with neutrinos. It is a quantum mechanical concept that in many bound states there is a ground state which has a non-zero energy associated with it. For instance, you have zero point energy the electronic ground state of an atom. You also have zero point energy in the ground vibrational state of a molecule. No neutrinos involved.
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g/G = 1 AU. Discuss
Aha, now we have it. Thanks for coming clean at last. So you are trying to pick orbital mechanics apart, to see if variable G can explain dark matter. Fine. I'm slightly intrigued, though as to what a nonsense equation like g/G = 1 AU has to do with that. It does not bode well for your study.
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Particles Being Points is in Conflict With Them Being Something! [WRONG AGAIN]
Diverging lines can perfectly well diverge from a common origin, surely?
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We’re Slow-walking Our Way to WWIII (Agree/Disagree)
Or indeed a Russian conscript, thrust into the "meat grinder".
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calcium acetate layer on evaporation
Maybe protein then. Especially if it is a skin on top. I would expect CaOAc crystals to settle out at the bottom, I think. But you must expect to have impurities if you use a a source of minerals from the environment around you. Almost nothing is pure.
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g/G = 1 AU. Discuss
You can think what you like, of course. Normally when I make a scientific error, people here will jump in and correct me, just as I and others have done with you. That's how we improve one another's knowledge. If and when you decide to let us know what you are doing on this forum, I may take a further interest. For now, I'll leave you, while I nip out and buy some popcorn, just in case. 😀
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g/G = 1 AU. Discuss
How about you revealing your agenda, instead of asking tiresome questions?
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g/G = 1 AU. Discuss
Yeah I thought apples and oranges was getting a bit hackneyed, and that sink plungers would also obviate the tiresome rejoinder that both are at least types of fruit. 😁
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g/G = 1 AU. Discuss
That deserves some sort of prize!
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g/G = 1 AU. Discuss
Temperature of domestic fridge, in C deg / number of digits on one hand = 1.
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calcium acetate layer on evaporation
Hard to say but eggs most likely. There is some protein in eggshells. Also if the shells are brown, there is a protoporphyrin pigment present, which may perhaps generate a yellow colour.
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g/G = 1 AU. Discuss
Down some crank rabbit hole, by the look of it.😄 But as you are having trouble with fairly simple concepts, I am not expecting a particularly sophisticated form of crankery. Nevertheless, you can stop being coy and reveal your agenda now, Ta-Daa!
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g/G = 1 AU. Discuss
No need to be sarky😀. Look, there have been half a dozen posts explaining why your equation is not valid, yet it is clear from your response that you have not taken in what was being said. So I've just been trying to explain it to you again, as clearly as I can. G is the proportionality constant relating the force of gravity to the mass of the two objects concerned and the distance between them. It is observed that the force is proportional to the size of both masses, i.e. F is proportional to m x M and that it is inversely proportional to the square of the distance between them , i.e. F is proportional to 1/r². Putting the two observations together F is proportional to mM/r². G is the scaling factor that tells you how much F you get for given values of m, M and r. So the whole expression is F=GmM/r². This was worked out by Isaac Newton and is known as Newton's Law of Gravitation. The dimensions of G are L³/MT², so in the SI system the units are m³/kg-sec². This funny collection of units is the result of relating force, which has dimensions of ML/T² (per F=ma), to the expression on the right which, apart from G, has dimensions of M²/L². So we have L³/MT² x M²/L², which after simplifying by cancelling powers top and bottom as appropriate gives us ML/T², which is what we want. Only wrong ones, like yours. If a formula giving the ratio of two physical quantities has a result that depends on the units chosen, then it must be dimensionally incorrect and tells you nothing about the world. SI is used in science because it is universal and simple to use.
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g/G = 1 AU. Discuss
No. Your equation makes no sense, because you are trying to divide apples by sink plungers. G and g are different sorts of quantity. As has been pointed out, if you were to use different units the numerical relationship you have found would not arise. That means there is no significance in it. What you are doing is like noting the approx height of a man is 6ft and there are 6 sides to dice. Coincidence! Whereas if you work in metres, the height of a man is a bit less than 2metres and the coincidence disappears.
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We’re Slow-walking Our Way to WWIII (Agree/Disagree)
What do you think would be the consequences for the relationship with Europe if it did? Can Europe afford to cut off China?
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We’re Slow-walking Our Way to WWIII (Agree/Disagree)
Nobody can know. But if China starts supplying weapons to Russia then it could snowball, certainly. Very important that the US finds a way to make it not worth China's while to try that.
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Particles Being Points is in Conflict With Them Being Something! [WRONG AGAIN]
My hovercraft is full of eels.