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Showing content with the highest reputation on 05/14/21 in all areas

  1. https://phys.org/news/2021-05-physicists-neutron-stars-bigger-previously.html Physicists predict neutron stars may be bigger than previously imagined: When a massive star dies, first there is a supernova explosion. Then, what's left over becomes either a black hole or a neutron star. That neutron star is the densest celestial body that astronomers can observe, with a mass about 1.4 times the size of the sun. However, there is still little known about these impressive objects. Now, a Florida State University researcher has published a piece in Physical Review Letters arguing that new measurements related to the neutron skin of a lead nucleus may require scientists to rethink theories regarding the overall size of neutron stars. In short, neutron stars may be larger than scientists previously predicted. more at link............... the paper: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.172503 Implications of PREX-2 on the Equation of State of Neutron-Rich Matter: ABSTRACT: Laboratory experiments sensitive to the equation of state of neutron rich matter in the vicinity of nuclear saturation density provide the first rung in a “density ladder” that connects terrestrial experiments to astronomical observations. In this context, the neutron skin thickness of 208Pb (R208skin) provides a stringent laboratory constraint on the density dependence of the symmetry energy. In turn, an improved value of R208skin has been reported recently by the PREX collaboration. Exploiting the strong correlation between R208skin and the slope of the symmetry energy L within a specific class of relativistic energy density functionals, we report a value of L=(106±37)  MeV—which systematically overestimates current limits based on both theoretical approaches and experimental measurements. The impact of such a stiff symmetry energy on some critical neutron-star observables is also examined.
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  2. Would this be made of unobtanium, or impervium? Infinitely strong or infinitely rigid materials do not exist. Citation needed. Literature I find all say that these high pressures are only achievable with diamond anvil cells. Is a factor of ~7 big enough? "the researchers investigated the behaviour of the metal osmium at pressures of up to 770 Gigapascals (GPa)" https://phys.org/news/2015-08-high-pressure-secrets-osmium.html
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  3. This is problematic, the pars compacta dopaminergic D1 path going into the striatum is only running at 8Hz whereas the gabaergic path from the pars reticulata going into the thalamus is running at 68Hz. If you think about the human consciousness it cannot be running at 8Hz for the striatum, but it is more likely to be 68Hz for the thalamus. Did I make a mistake about the seat of consciousness being the striatum? Should it be the thalamus instead? I apologize, you might be correct on the matter. P.S. I only look for the truth, but it takes a while to convince me.
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  4. Discovered an interesting group called the Scientific Coalition for UAP Studies. Looks like they have a conference coming up. https://scu.regfox.com/2021-scu-aapc Here's their twitter feed: https://mobile.twitter.com/explorescu
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  5. I dunno. I kinda appreciate being able to so easily tell when I’m interacting with a deluded paste eater who STILL after all these decades continues rejecting the absurdly obvious truth of evolution by natural selection. It keeps things more authentic and efficient that way.
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  6. This is what happens when you take YouTube videos too seriously ... You are conflating the 2D analog of 4D space-time, the rubber sheet, and assuming it is stretched around a huge mass ( the Earth, in the analog ) composed of exotic or dark matter ( exotic matter makes no sense ), such that the dimples in the analog sheet are reproduced in space-time. While this might reproduce some of the effects of gravity, it most certainly cannot reproduce some of the more exotic effects of GR. ( lets see you try to model a Black Hole from the ubber sheet analogy ) Further, what is the separation between the exotic/dark matter core, and the reduced dimensionality universe of 'real' matter ? Can matter ( and properties ) be exchanged through this separation ? ( exotic matter has negative energy, and 'repels' gravitationally; that is why it doesn't make sense ) I think you have taken the 'rubber sheet' analogy waaaay too far ...
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  7. This is a weasel tactic. Rand Paul did not provide any trackable information on: - the name of the researcher (installing calling them dismissively bat woman) - the specific grant he alludes to - any reference on the paper. This could just be sloppy, but more realistically it gives him and his ilk the ability to then continue to say that there is 'reasonable' doubt, or 'some' have said that and so on. If Fauci responds to that, there will be something else next week. It is not an honest inquiry. Rather the goal is to discredit the person and spin a narrative that suits their base.
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  8. The entire NIH grants database is searchable. Here's the results for Wuhan University. Two R01's awarded to the same PI for AIDS related immunology research. Here's the Chinese Academy of Sciences results. None awarded by the NIAID. That took all of two minutes to disprove. Unless, another institution gave the a subaward from their NIAID grant, but the fact the author's name is not given, the paper not cited and the grant number isn't stated, it's rather impossible to verify that situation.
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  9. Even if you take the claim at face value, it does not make sense. If I give the local university money to research hair restorer, and that university also does research on chemical weapons, am I funding chemical weapons? If they say they spent my money on the weapons, does that mean I funded them, or does it mean they stole my money and misused it? So the interesting question is why is Rand Paul making allegations which do not even make sense? And the other question is why is the OP repeating them?
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  10. The 'Dark side' can be geographical location if that is how we decide to name the other side of the Moon. For sure it is not always dark, but language moves in mysterious ways (Greenland is not always green)... In fact, the 'Dark side' seems to be so widespread that we might start putting it into dictionaries. ... I understand there are constantly dark spots on the bottom of some deep craters on the Moon. Did we confirm ice there? Is this in form of ice sheets or something that I wouldn't recognize as ice when looking at it?
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  11. I know that there is a rather controversial debate raging about the benefits and negatives of Open Access policies. Can anybody share your opinions about Open Access?
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