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Quote:Since there is no external referent against which the expansion is measured, how do we know from the red-shift evidence that the universe is not, instead, going through some process of universal-diminution (everything receding from everything else and reducing in size)?
--------------------- --------------------- "Nothing exists but atoms and empty space. Everything else is opinion." Titus Lucretius Carus 99-55 B.C.
Quote:Another good book I want to recommend. I've used it as a basis for lectures on your question, and I always highly recommend it, in ways one of the least mathmatistic for the absolute gems it contains."Geometry, Relativity, and the Fourth Dimesion" by R. Rucker.I have to admit I'm confused Otto about what you're after. Enuf is enuf. It's possible to ask questions effortlessly without the least effort to discover the multitude of 'low hanging fruit'. You are getting some great answeres but seem uninterested in expending the least effort to even take the time any reasonable person might do to 'discover' the true terrain of any of this. I and others are spending time to try and steer you in the directions to help understand the questions you are asking (NOT THE ANSWERS, THE QUESTIONS) but YOU need to take some time and effort to do at least the very basic legwork any reasonable person might do that had a genuine interest in the many topics you seem to traverse without taking the least time to fathom even in a very shallow the implications and directions the previous question generates?For anyone really interested there is a significant amount out there on the web and paper composed specifically for you. IMO it takes very little effort to wade into the shallow end of the pool, but you have to actually be interested.For that reason, I'll let rest any more input here by me. I hope you find what you are after, but more importantly learn to respect the effort others have spent in their respective diciplines to try and answer your questions. More importantly that you put some effort into it.What concerns me is you might 'parrot' some of it without taking the effort to understand it, research it, make some effort. It's that sort of thing that confuses the heck out of casual bystanders, and leads to some less than desirable opinions about modern physics and mathematics, logic and philosophy. I see this as a recurring theme in this endless series of questions.This last one about 'space' sort makes my point. It's a personal choice, but I don't and have never tutored anyone who will not take their own time and effort. Asking continual questions IMO takes no talent whatsoever. Asking a good question shows that at least the effort I and others are putting out is being respected and returned in kind. So my request to the Otto among us is to please slow down and try and spend at least some minor effort in understanding the questions you are asking to us physics folks, reward us with that. How can anyone possibly answer when IMO you don't understand the question you ask, dont want to take the least time and effort to understand it yourself before asking.Again best of luck to you.
"Scientists aren't perfect, just peer reviewed.""Eye of Sauron Observatory", featuring "Sauron's Other Eye", 16" dob, conical Royce mirror.
Quote:To what degree can human (non-mathematical) speech accurately display the most important and current facts about sub-atomic and cosmic realities? I would appreciate hearing your response to this question.
"After the Laws of Physics, everything else is opinion" -Neil deGrasse Tyson
Elmira-Corning Astronomical Society
Quote:Was she, the physics teacher, correct?
Quote:If she is correct, does her statement apply to relativistic phenomena as well.
Quote:EJN, I am fascinated by your "no" to the relativity one. In light of Dave's comment which followed yours, the clock-metaphor is not like the baking-soda-volcano, but actually getting at what relativity is?