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StringJunky

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Everything posted by StringJunky

  1. Yes, I'm talking about simple 3D space, as we know it, with time. Basically, if we remove all the fields, is time still there?
  2. I am prompted by something mordred said: space is volume. I have no problem with this but I was wondering, when we see the co-ordinates xyzt, does this mean that time is a part of space or just that it is treated in conjunction with space but time is actually a property of the fields within space, bearing in mind the prior assumption that space is just volume? Hope this makes sense. I didn't know where to put this as it's a general question rather than necessarily to do with Relativity specifically; quantum physics may have a position on it.
  3. I'm fascinated by emergence and would love to give you a clear explanation but I can't; it's a work in progress for me. I ask myself really simple questions like "When does a chair become a chair, when constructing it?", in the process of my learning. Emergence is an observable fact that is not so easily defined. I think, in order to get a grip on complex, self-organising systems, like our minds, we need to understand simpler systems, like termite mounds and slime moulds, first.
  4. Even so, a forum like this is a source of knowledge and whether the conversation is current doesn't really matter. Any addition of information, like you've just done, will be useful for someone looking into the subject. I'm sure you have knowingly read long-finished conversations trying to find information.
  5. [stringJunky #208] It can predict the time difference between two points 8 inches apart in altitude; cant argue with that. I reckon it (STR) can predict a time difference for a 1 inch difference in altitude, or even 1/8". Perhaps your meaning was a prediction that could be tested, & that modern testing is limited to about 8" of altitude. I am uneasy about the wording "the" time difference. In STR there is no time, thusly there can be no "the" time difference. It might be better to say "a" time difference -- even here i prefer "a ticking difference" (to steer clear of using the word "time"). Time is relative, as per STR, so it should have been apparent that I meant relative time difference from some arbitrary reference. There is, apparently, a test/experimental clock that can measure an inch (or a centimetre, can't remember which) difference but I was referring to a standard atomic clock that is in use in the GPS system. Swansont can clarify.because he designs and works with them. Edit: Found it. It's a strontium clock that can measure 2cm difference of altitude:
  6. Would it help to say that consciousness/awareness results from a contiguous set of functions that , subjectively, gives us the impression that we are a continuum because we can't sense the 'joints' between all our functions; we feel as one piece.
  7. Yes, I think the consensus is that GR's not working when you get too close to T=0
  8. iIve no idea. Does the notion of location even mean anything in that state? Was anything discrete in that state?
  9. My OP was specifically related to the pre-inflationary universe, as a unique case, when everything was connected physically as one unit and homogenous in substance, like at the quark-gluon plasma stage; there was no free space. Once inflation started and photons could travel, then you would have notions of 'past' because it would take time for a signal to travel across empty space and different parts of the expanding universe would be behaving differently as it expanded. This is a clarification of my thought at the time I wrote it and not of the actual science. It's a speculation but it's something that I was happy to have corrected in order to learn something.
  10. I would say, fundamentally, language is information embedded in a set of signals that can be used by another
  11. This is a science forum not Facebook.
  12. We sometimes forget that we are "divided by a common language".
  13. Yes, legal age of consent and actual age of people starting rarely align in practice. The legal age is there as a legally-defined boundary in the event of things going wrong or for when a young person needs protecting in the event of abuse. At the legal age, society has defined that a person is permitted to have sexual autonomy and assumes they can handle such activity with others; in Western terms.
  14. At least you starting to think for yourself, but yes, as long as any mutual activity is consensual and they are of an age, legally, to give consent then it's ok.
  15. He's probably been subliminally or overtly indoctrinated to believe that it's wrong and that love, in all it's forms, is between a man and a woman only.
  16. Let's not forget, he's only 14, so his judgements/assessments are based from that perspective.
  17. Note that the operative word is 'incomplete' and not 'wrong' when talking about theories that have been superseded.
  18. He's just being pedantic over a word. He has a problem with abiogenesis as well. Llke dark energy and dark matter were thought of as placeholders, string theory is being worked on because there's a problem with GR.
  19. Since when did a pdf become a video? It doesn't have an iota of proof or evidence yet but quite a few of the brightest scientists are working on it, not least Edward Witten.
  20. Yes. It's a different way of thinking. I never quite mastered the Zone System when developing and printing and I'm getting a bit of an itch to remedy that. I like digital but I've already got the dark room gear and my MO is anticipating and capturing the shot with one shot so it suits me fine. The difference is that the old style forces you to think more about what you are doing and, hence, you will more likely produce your intent rather than producing an accidentally-great photograph amongst the myriad exposures from a multi-frame job. A good picture is a good picture but a pre-conceived picture is more personally rewarding than one that just happens because one actually creates it; it's an artistic statement. This is my take on it and i respect anybody's take that might be different. Different strokes... My idea of gear-heaven is an FM2 or FM2n; mechanical with a separate light-meter.
  21. How timely, I've just been thinking about pulling my dark room gear out and going 35mm again. He was a great photographer.
  22. The forces of repulsion between adjacent atoms would have to be infinite and yet still attracted... a tall order.
  23. Yes, not everyone wants to be part of another's life. Some people like solitude and don't equate it with loneliness.
  24. Is 'fake news' and 'alternative facts' 21st century-speak for propaganda.
  25. What history tells us is that theories eventually become incomplete with new discoveries, so new ones are needed to extend their explanation. Old theories aren't wrong as such, it's just that their domain of validity is found to be limited; they are still useful within their domain e.g. you can still use Newtonian gravity to land on the Moon. Nothing can be written in stone, in terms of any particular theory's explanatory completeness..
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