tag:blogger.com,1999:blog-22973357.post2151335990140377633..comments2023-09-27T07:44:19.769-04:00Comments on Sabine Hossenfelder: Backreaction: Where do atoms come from?Sabine Hossenfelderhttp://www.blogger.com/profile/06151209308084588985noreply@blogger.comBlogger106125tag:blogger.com,1999:blog-22973357.post-10643146495252442952021-02-22T16:49:12.541-05:002021-02-22T16:49:12.541-05:00Notice though that this cannot be considered a tru...Notice though that this cannot be considered a truly 'independent' test of GR, since the results are compared to predictions obtained through a formula that includes M(sun) as a factor. (Which was derived from Std gravity/relativity equations).<br />In other words, either M(sun) and gravitational redshift are both correct, or they are both wrong.<br />It is an amazingly precise and Tonibathttps://www.blogger.com/profile/09121855653272327956noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-60262431395112999062021-02-21T12:30:50.482-05:002021-02-21T12:30:50.482-05:00Let me please retract the question, recent observa...Let me please retract the question, recent observations in good accordance with predictions:<br />Gonzalez et at, Arxiv 2020: The solar gravitational redshift from HARPS-LFC Moon spectra - A test of the general theory of relativity.Tonibathttps://www.blogger.com/profile/09121855653272327956noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-63797026451883396872021-02-21T10:23:52.937-05:002021-02-21T10:23:52.937-05:00In a 2005 lecture celebrating the 100 years of Ein...In a 2005 lecture celebrating the 100 years of Einstein's Special Relativity, Kip Thorne states that the slowing of time predicted by SR was measured and confirmed in 1976 on earth. However, the results of a similar attempt in 1955 to check it at the sun's surface (using emission spectra for known elements from light emitted by the sun) ended up in 'controversial results', Tonibathttps://www.blogger.com/profile/09121855653272327956noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-40725396044889860702021-02-16T17:14:04.771-05:002021-02-16T17:14:04.771-05:00To put it bluntly, on black holes (BH):
Where does...To put it bluntly, on black holes (BH):<br />Where does the energy come from, what is the fuel for the huge amount of energy transfer that takes place in and around BHs?<br />BHs have been called the largest energy plants in the univers. And no nuclear reaction is occurring there. What does drive it?<br />Not what generated it, which we know, but what actually drives it once it has been formed.<Tonibathttps://www.blogger.com/profile/09121855653272327956noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-41596366362744873322021-02-15T13:17:43.832-05:002021-02-15T13:17:43.832-05:00Nice reference!
But useless FOPP. 90+ prooblems? N...Nice reference!<br />But useless FOPP. 90+ prooblems? No way.<br />Some of them are not really actual burning problems, like the problem of time, or the size of the universe. They are important questions that we might answer some day, but we do not need to urgently solve them now to make any progress.<br /><br />Maybe we could work a better list of those problems that are really puzzling AND thatTonibathttps://www.blogger.com/profile/09121855653272327956noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-20776721830654183222021-02-15T01:44:47.227-05:002021-02-15T01:44:47.227-05:00List of unsolved problems in physics<a href="https://en.wikipedia.org/wiki/List_of_unsolved_problems_in_physics" rel="nofollow">List of unsolved problems in physics</a>Sabine Hossenfelderhttps://www.blogger.com/profile/06151209308084588985noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-55782108133041366682021-02-14T21:56:32.487-05:002021-02-14T21:56:32.487-05:00Has anyone worked out the list of currently unexpl...Has anyone worked out the list of currently unexplained, paradoxical findings and results in fundamental (particle) physics and astrophysics?<br />Black matter (BM) and black energy (BE) are the main ones and could liderate the list. So...<br /><br />1 and 2: BM, BE.<br />3. Spiral galaxies' Winding Problem<br />4. Anomalous high prevalence of symmetric (vs asymmetric) double systems of starsTonibathttps://www.blogger.com/profile/09121855653272327956noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-41713392973232006192021-02-13T20:10:32.698-05:002021-02-13T20:10:32.698-05:00Sabine, You don't seem to consider the very cr...Sabine, You don't seem to consider the very credible work concluding that or sun (and likely most in our neck of the sequence) is a '4th generation star'. Cyclic models such as Turok's, 'Conformal', 'DFM' etc. re able to provide the mechanism for how and also overcome the 'pre BB state' problem. Do you dismiss the Solar science work, if so why? or have you Peter Jacksonhttps://www.blogger.com/profile/13905359947213961259noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-4883820087945186272021-02-04T07:10:29.350-05:002021-02-04T07:10:29.350-05:00Thanks! That is a really great picture and article...Thanks! That is a really great picture and articleRollohttps://www.blogger.com/profile/00322514700429344549noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-21122302540905097922021-02-02T13:07:09.152-05:002021-02-02T13:07:09.152-05:00Some of the elements heavier than iron were formed...<i>Some</i> of the elements heavier than iron <i>were</i> formed in supernovae, but how much depends on the individual element. For example, most of the titanium and lead were formed by the "slow neutron capture" process in aging, low-mass stars, while most of the iridium, platinum, and gold were formed by neutron-star mergers, as were all of the thorium and uranium.<br /><br />There&#Peter Erwinhttps://www.blogger.com/profile/18415612458902079584noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-51462345771053259892021-02-02T08:24:23.484-05:002021-02-02T08:24:23.484-05:00Thanks as ever for this, most interesting.
Specif...Thanks as ever for this, most interesting.<br /><br />Specifically - I have spent most of my life since I was about 10 or 11 thinking that elements heavier than iron were formed in supernovae. <br /><br />I learned this from the book Please Explain by Isaac Asimov, which I loved as a child. The book is still wonderful and I heartily recommend to anyone with children; it is out of print but you Rollohttps://www.blogger.com/profile/00322514700429344549noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-11987498736268886872021-02-01T07:14:12.865-05:002021-02-01T07:14:12.865-05:00"then catch electrons to make atoms" -- ..."then catch electrons to make atoms" -- Where they got electrons from?<br />Are the numbers of existing protons and electrons equal at the early beginning of Universe?Alexhttps://www.blogger.com/profile/16716563350465238544noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-56043475654202544862021-02-01T00:01:12.820-05:002021-02-01T00:01:12.820-05:00Sorry, turned out I completely misunderstood EPR, ...Sorry, turned out I completely misunderstood EPR, Bell's theorem and its connection to the measurement process (and statistics). Went on to read some books-papers... <br />The paper still seems to be interesting (and superdeterminism acquires colors). <br /><br />Thanks for the clarification.Vadimhttps://www.blogger.com/profile/17350813784317789818noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-14429300710634126882021-01-31T12:18:01.274-05:002021-01-31T12:18:01.274-05:00This comment has been removed by the author.Vadimhttps://www.blogger.com/profile/17350813784317789818noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-84988495826945435952021-01-30T09:43:37.984-05:002021-01-30T09:43:37.984-05:00If QM were subMarkovian then Bell's theorem wo...If QM were subMarkovian then Bell's theorem would be violated. There would be some hidden variable that carries this subquantum information. <br /><br />I would have to look at the Glick and Adami paper. I am familiar with work by both. First off, Markovian statistics in effect does not generate information, but it does not create any either. SubMarkovian statistics creates information, and Lawrence Crowellhttps://www.blogger.com/profile/12090839464038445335noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-42356021746864530842021-01-29T22:14:01.134-05:002021-01-29T22:14:01.134-05:00Statistical independence is not an issue as such. ...Statistical independence is not an issue as such. An example came to mind, which I think is in accord with what the paper claims. <br /><br />There is a bucket of water. Up to some error bar I can use a class of scoops to empty the bucket. Then I choose the first scoop and start the process. It is not so relevant whether or not the scoops in between are drawn independently or not. But it is Vadimhttps://www.blogger.com/profile/17350813784317789818noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-83720061468411265162021-01-29T20:37:15.080-05:002021-01-29T20:37:15.080-05:00@ Lawrence a noob question here and an unrelated o...@ Lawrence a noob question here and an unrelated one to this particular discussion. <br /><br />How do we positively know that quantum states are Markovian? That is, what is the best place to check in order to understand this (the simpler, the better)? Is it back to Bell's theorem and statistical independence questions? <br /><br />I searched and the first paper it gave me is quite curious - Vadimhttps://www.blogger.com/profile/17350813784317789818noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-21553967116450155882021-01-29T15:37:41.904-05:002021-01-29T15:37:41.904-05:00"Chance vs. design." (Another one of my ..."Chance vs. design." (Another one of my buttons pushed.)<br /><br />I designed turbines for a living for most of my professional career. My company, GE, sold turbines for power generation but did not make boilers or feedwater heaters. Also, specific site conditions such as feedwater temperature were other input variables we did not control. So most turbines we built were custom designs JimVhttps://www.blogger.com/profile/10198704789965278981noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-56471084266468657322021-01-29T06:06:03.733-05:002021-01-29T06:06:03.733-05:00@ Keith D. Gill: I think to put it somewhat more p...@ Keith D. Gill: I think to put it somewhat more precisely, the question is how is a world built from quantum states or waves, that are Markovian, gives rise to a large scale world that is subMarkovian. Markovian statistics is where a fluctuation, or random occurrences, at one time have not memory carried to a subsequent time. Yet clearly with biological systems processes are subMarkovian, which Lawrence Crowellhttps://www.blogger.com/profile/12090839464038445335noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-66677315446948160282021-01-28T21:56:18.781-05:002021-01-28T21:56:18.781-05:00Keith D. Gill12:48 PM, January 28, 2021
Again, ev...Keith D. Gill12:48 PM, January 28, 2021<br /><br />Again, everything you write is complete gobbledegook.<br /><br />The blog post literally explains where atoms come from. It answers the questions.<br />It is well understood why nature on a very small scale (quantum) and on a very large scale (GR) transcend human intuition - human intuition is based on local, coarse perception. But the quantum isSteven Evanshttps://www.blogger.com/profile/13898046706669437332noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-16512957438065575432021-01-28T17:08:35.166-05:002021-01-28T17:08:35.166-05:00"clearly, given enough time, science will no ..."clearly, given enough time, science will no doubt give us control over the fabric of matter to the point of almost being able to manipulate it with the same ease by which we manipulate the fabric of our own thoughts and dreams."<br /><br />We have even less control over thoughts (and especially less so of dreams, which represent a strange dance between cortical and limbic regions), Vadimhttps://www.blogger.com/profile/17350813784317789818noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-55766545266595411572021-01-28T12:48:33.502-05:002021-01-28T12:48:33.502-05:00Steven Evans wrote:
“Everything that you claim is ...Steven Evans wrote:<br />“Everything that you claim is mysterious is not. It is explained by science.”<br /><br />If such were truly the case, then why has it been suggested to physicists that they shouldn’t ask too many questions as to why quantum mechanics works, but instead they should simply “shut up and calculate”?<br /><br />Or why did a premier physicist such as Richard Feynman say:<br /><Keith D. Gillhttps://www.blogger.com/profile/13630496579402615153noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-76023137176204167192021-01-27T21:32:37.623-05:002021-01-27T21:32:37.623-05:00Keith D. Gill11:41 AM, January 27, 2021
" *w...Keith D. Gill11:41 AM, January 27, 2021<br /><br />" *wonder* how it is possible that the blind and mindless meanderings of chance could have created the complex biological processes inherent in our bodies?"<br /><br />Errrmmm, yes, that's exactly what Newton, Darwin and Einstein wondered, and they have provided the answers. In fact, many of the answers are described in the several Steven Evanshttps://www.blogger.com/profile/13898046706669437332noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-63187718750436076812021-01-27T19:08:18.516-05:002021-01-27T19:08:18.516-05:00For example, you cannot properly answer "why ...For example, you cannot properly answer "why is it raining?" as you will end up with "how has it all begun?" There are too many relations - vapor, pressure-temperature, magnetic field, air currents, dew points - to find one and only cause for rain to happen. As in actuality rain is not some phenomenon with its separate and independent nature - not a thing, not a state but it&#Vadimhttps://www.blogger.com/profile/17350813784317789818noreply@blogger.comtag:blogger.com,1999:blog-22973357.post-41341056848434854842021-01-27T19:07:44.396-05:002021-01-27T19:07:44.396-05:00Oh, don't get me wrong - I'm constantly in...Oh, don't get me wrong - I'm constantly in awe, especially in nature. It's the semantics. Yet, in that case, I don't mean "the word doesn't matter in the end", but that the word can be used as a mirror for reflection, examination of our cognitive models. That is, yes, the word is not the thing. Yet, it can point to contradictions and where to look. <br /><br />You Vadimhttps://www.blogger.com/profile/17350813784317789818noreply@blogger.com