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joigus

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Everything posted by joigus

  1. Trying very hard to picture Pope Francisco as a bouncer in a club --unsuccessful so far.
  2. I think I'm ready for a straight answer to what was, after all, a straight honest question: Could Moses, the Book of The Dead, the Greeks and early Christian writings conceal the scientific technology of gods? The answer is yes, they concealed it so well that nobody can find a trace of it.
  3. Yes, I've read the Epic of Gilgamesh, commented by Andrew George, and I don't remember anything about lasers.
  4. @Abhirao456 You may be interested in this: https://en.wikipedia.org/wiki/Sokal_affair It's very much related to what @iNow's point.
  5. Not a single useful rule to be applied empirically have I found there. Nor a single useful rule to be applied in an explanatory way. Many pompous words, that's all. You should have to find an expert in cosmogony, the mind, matter, ethology, and what not, to be 100% sure whether he's making any sense at all. For the time being, I will stick with other's opinions that it's mostly word salad. Just to clarify, I'm not a professional theoretical physicist, although I've had all the training, and keep up-to-date reasonably well. But my approach is very much on the mathematical/conceptual side. But don't go just by me, or any other theoretically-minded person. Science is heavily constrained by experiment. No matter how deep and far-reaching your theoretical analysis may appear, if you can't make a prediction or retrodiction (explanation of what's already known) pretty quickly, you're probably just playing freely with words or concepts. That's a good test.
  6. Very interesting, @beecee. Funny that this man probably saved millions of lives and yet nobody calls him "saviour".
  7. One thing strikes me: If the Egyptians, the Bronze-Age Hebrews, and the old Mycenaean Greeks had such technology, how come they fell under a wave of lowly dispossessed people circa 1250 BCE? Surely these people didn't sweep them away with their lasers, did they?
  8. Type "extraordinary claims" on Google interface and follow autocomplete... Sagan and Laplace have something to tell you. Or follow the frog at the top of the page.
  9. Oh, that ark... Only thing that comes to mind is Raiders of the Lost Ark; there was quite an impressive display of technology there. I'm sorry I can't be of more help.
  10. (my emphasis.) I'm not an expert, but I thought that was Noah's ark. His technologies for measuring water levels included the raven and the pigeon. Then there are other issues...
  11. Thanks a lot! That's certainly something to follow up on.
  12. I've been working on the idea for 37 years now. I'm glad you deem I'm getting closer. It means a lot. What's different is different; and what's the same is the same. Enough said.
  13. Fields (vector fields, tensor fields...) are neither covariant, nor contravariant. Covariant or contravariant character apply only to coordinates. The need for that distinction comes from having two bases, mutually dual \( \left(\boldsymbol{e}^{i},\boldsymbol{e}_{j}\right)=\delta^i_{j} \), whenever that distinction has to be made. Certainly not here.
  14. Fields are neither covariant, nor contravariant. Covariant or contravariant character apply only to coordinates. The need for that distinction comes from having two bases, mutually dual \( \left(\boldsymbol{e}^{i},\boldsymbol{e}_{j}\right)=\delta^i_{j} \), whenever that distinction has to be made. Certainly not here. I didn't say light speed is constant. I said photons don't slow down. It's different. I need a slow glass, lately.
  15. I'll repeat that last bit, as it didn't come out right. I meant: \( 2.998\times10^{8}\textrm{m}\textrm{s}^{-1} \)
  16. No. That must be it. This post will serve me to test. Thank you. Edit: It is. Thank you
  17. Hi, @Dave. Great work. Thank you. I've found some issues though: 1) I always seem to appear in anonymous mode. I've tried clearing cookies, but it doesn't seem to work. 2) I cannot edit my posts anymore 3) Some inline maths don't seem to compile after refreshing Point 3) seems to be due to introducing by copy and paste in rich-text format. Probably not an issue, but as I wasn't able to edit my comment, I couldn't fix it.
  18. Wow. That's quite a bunch of physical concepts completely wrongly understood. Let's leave aside the fact that "contravariant tangent fields" doesn't mean anything. Photons are never "slowed down", and light doesn't need any specific action on it in order to keep its original velocity. Light moves at fixed, universal speed \( 2.998\times10^{-8}\textrm{m}\textrm{s}^{-1} \), not as a consequence of being "stunt", but of space-time symmetries. I meant \( 2.998\times10^{8}\textrm{m}\textrm{s}^{-1} \). For some reason I can no longer edit, after the sofware update.
  19. joigus

    About Energy

    The short answer is yes. Energy in mechanics depends on position and velocity, and those are frame-dependent quantities. I hope that answers your question. How satisfactory the answer is depends on how general you want it to be.
  20. Rainbow mountains in China, Iceland, and Peru. China: Zhangye national geopark: https://en.wikipedia.org/wiki/Zhangye_National_Geopark https://en.wikipedia.org/wiki/Zhangye_National_Geopark Iceland: Landmannalaugar region. From https://www.kimkim.com/c/iceland-best-hiking-regions https://en.wikipedia.org/wiki/Landmannalaugar Peru: Vinicunca mountains: https://bookatrekking.com/en/trekking/peru/rainbow-mountain/ https://en.wikipedia.org/wiki/Vinicunca In all three cases I've provided links to both tourism-oriented websites, and a Wikipedia articles with more details about geological aspects. Some of the different colours can be attributed to differential oxidation/composition of the strata. In other cases, like the Icelandic one, sulfur from volcanic activity must be involved. The photos may be oversaturated in some cases.
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