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Showing content with the highest reputation on 06/25/20 in all areas

  1. Disclaimer: Black hole not visible, southern hemisphere required. https://www.theregister.com/2020/05/06/nearest_black_hole_earth/
    3 points
  2. When people say "Well, the dictionary says..." they obviously don't realize that a modern dictionary is a contemporary record of usage and not an authority. The people at large determine the usage in any given period.
    2 points
  3. That is a really good question, because I still don't know what your position actually is. You seem to be saying that the concept of an evaporating Schwarzschild black hole is self-contradictory - which is trivially true, because Schwarzschild black holes are of course stationary by definition. But evaporating black holes aren't of the Schwarzschild kind, so where exactly is the issue? Then so you also seem to be saying that even ordinary Schwarzschild black holes are self-contradictory, because somehow event horizons can't exist? But I don't understand why you think this, because the reasons you give don't make any sense.
    2 points
  4. This is what I got from your posts: 1) A black hole and all the events in its interior can be described in the coordinates of an observer at infinity. 2) A Penrose diagram of an evaporating black hole shows that the formation and disappearance of a black hole have the same time coordinate. 3) If an event A has a coordinate time that is less than the coordinate time of an event B, then A happened before B (maybe even in B's past?). Problems with this: (1) The interior events do not have meaningful time coordinates for this observer. (2) If that's what the diagram really shows, then the coordinates used in that diagram can't be the same as for the observer in (1). (3) You're comparing coordinate times of events that have no causal connections, and their ordering is irrelevant, but you see "logic problems" by treating it as something physical.
    2 points
  5. Really ? Cosmic rays enter the atmosphere billions of times, yet not a single micro BH has ever been detected. Maybe you can produce a citation of a detected micro BH. I can certainly post numerous citations of cosmic ray detections.
    2 points
  6. +1. Very interesting. I find it amusing that in German spoons are boys, forks are girls, and knives are hermaphrodites.
    1 point
  7. You've not given any indication of what you've done or what your current understanding of these terms is, so I don't know where help is needed. If you don't know the difference between an interrupt and a subroutine call, it seems you have to re-read the chapter(s) preceding this question.
    1 point
  8. I found this article (quite long) how English mangled it's way to where it is now: https://erenow.net/common/our-magnificent-bastard-tongue/3.php
    1 point
  9. We can already invalidate Yanchilans theory as we have already tested different gravitational potentials for time dilation at different elevations. With precision atomic clocks. Even testing it a distance of one foot. The results agree with GRT. https://www.nist.gov/news-events/news/2010/09/nist-clock-experiment-demonstrates-your-head-older-your-feet This isn't the only experiment done at different elevations. I assisted at a University that also conducted similar experiments as part of the course curriculum. Though we used the coastal mountains of BC coast. It was pointless publishing the results. Nothing newsworthy or unexpected.
    1 point
  10. Just to be clear, because Michel has mentioned it a few times... In the far, far future the CMB will not just 'disappear', it will get weaker ( much less than 2.7 deg K ) and be 'buried in the noise', and, as a result, be much harder, if not impossible, to detect. But an advanced civilization will have various noise-cancelling techniques available to them ( just as we do )
    1 point
  11. That's one of the most fascinating features of English, which is, of course, a life-long project for me to understand. Another observation is: In English you have a sort of a nucleated but de-centralised structure of different authorities of several degree. Oxford prescriptions, Merriam-Webster prescriptions, etc. Quite different from Spanish, for example. That's at least my intuition of how it works and organizes itself, and interfaces. Maybe just coincidental, but this strongly parallels how the Protestant and the Catholic worlds have organised themselves throughout history. The Protestant, more multi-branched; the Catholic, more unified around a leader. It's only very recently that Spanish academies have clustered, so to speak, in a similar way.
    1 point
  12. That seems to be a constant in, most, religious text's/stories, when a great person explains why we don't need to be distressed. Edit/ and leads the way to a less stressful life. Nice post BTW +1
    1 point
  13. It's a bright sunny day her . (An bit too warm for my preferences but...) And I can see a star that's in orbit around a black hole. Next time I cross the equator I will try to remember to keep a look out.
    1 point
  14. It has been pointed out by Daniel Dennett that oral traditions become relatively reliable in preserving the fidelity of the message once the priestly class becomes numerous enough, society is more stable, and the chants and recitations acquire a form similar to what multiplexing is in Von Neumann's architecture of modern computers. The Brahmins playing the role of the neuron or the integrated circuit element. The Vedas have been recited for millennia by many generations of Brahmin after the Arians settled in northern India and Pakistan. IMO this multiplexing, helped by social stability, must contribute to the stability of the message too --whatever the initial amount of nonsense or altered-sense "bits" is in the initial message. But neither form is immune to the possibility of further additions, re-editings, and the like. Interesting case in point, what @Eise mentions: The Bible. It is well known today that the virgin birth of Jesus from Mary is a translation mistake from Hebrew to Greek that got stuck on the Septuagint. After that, the mis-translation was propagated with a high degree of fidelity. (Remember: multi-plexing and relatively high social stability for the priestly class.) But mis-translation it was. "Almah," the word for "young woman" was translated as "parthenos" (Greek for "virgin"), while the Hebrew "betulah" (the real word for "virgin") appears nowhere in the original, as corroborated against the Dead Sea Scrolls by numerous scholars. But the origins of the Vedas are shrouded in mystery. We do know that this kind of culture came from a people in distress, coming from the Andronovo region and in migration, because the course of their main rivers had changed (the Greek-Russian archaeologist Viktor Sarianidi has made extensive excavations of the area.) That is the time when the oldest Vedas could have been more susceptible to change IMO. Following the Vedas we learn that they fought battles against the peoples already living in northern India and Pakistan. Did they lose some of their first documents and decide to re-write them in their minds or in texts? We don't know, or I don't know if we know.
    1 point
  15. I think it makes no sense to say that the vedas were twisted or not. They have grown organically. There are so many reasons for a text to change, especially when it originally was an oral tradition. Without having the 'original' how would you see that the texts changed? There are methods to find out which of the present versions we have are probably the oldest, but of course we can have no idea what the first written down version of the vedas were. And then there are many reasons why texts change over time, just to name a few: errors when copying the texts corrections of (language) errors authors putting in their ideas into the texts, in good or ill faith I only know a little about the history of Christian texts, which are of course not so old as the vedas, and also here already the problem exists that we do not know exactly what the original texts were. But we know copyists made errors, corrected errors, put in sentences or even complete stories, often because these copyists had a theological agenda to promote their version of Christianity. From some texts we know that there must have been more original texts, but they did not survive. With the vedas this will be worse, because they were orally passed to others for a much longer time. In Christianity, especially the new testament, there are at most only about 100 years between the oral tradition and the first written down versions we have (often less: the gospels were written till about 100 years, the earliest one probably only 30 years, after Jesus' death). With the vedas it is several millennia before they were written down.
    1 point
  16. Not sure what you mean precisely, but the first step in my mind is to revise policies that result in racially divergent outcomes. I doubt that we can get to a level where everyone is truly raceblind and I see little value in pretending that the society is. One important reason for the push for reforms is that traditionally racial inequalities were equated with qualities of the race itself (there is a shift from the purely racial argument to a cultural one, but it amounts to the same thing with different words). With mounting evidence, there is now more scrutiny on policies, laws and their interaction with day-to-day decisions and how those may create segregation and racial inequality. This may range from how schools are funded to criminal justice, law enforcement and so on. There is, however, also a strong pushback from certain circles which often feels like being borne of a desire to deny systematic inequalities (and thereby putting the burden back on minorities again).
    1 point
  17. Stu the cockatoo is new at the zoo...
    1 point
  18. My little bother just ate all the Scrabble tiles and his poop made more sense than you do.
    1 point
  19. I'm on a keto diet. That's high in fat. Based on that definition, I'm eating mostly junk food. I eat very high-quality food. Junk food cannot be defined. It's about quality and quantity... it's like porn. What is porn? What is junk food? You know it when you see it. 😷
    1 point
  20. If ads are enabled, YouTube pays approximately $1 per each 1000 views. So 1 mln views = $1k. Professional musicians typically earn money on concerts and selling CD/MP3. (4000 hours per year, is quite a lot for newbie, it is almost half year of watching by single person, or 4h for each of subscribers)
    1 point
  21. Let’s say, the online university is overseas, is mailing still possible?
    1 point
  22. When you get admission in online degree courses then kindly enquire about it. Most of the universities mail the degrees or certificates on request of the student. But mostly you have to go to the universities to collect the certificate.
    1 point
  23. That means it will be unfair for everybody. But that is related. If you believe in Universal Now or not. One must be consistent: if you are refuting Universal Now you cannot invoke it for another explanation. You cannot cherry picking explanations that contradict the other in order to explain the universe. And i am glad that you feel uncomfortable about it.
    -1 points
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