michel123456

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michel123456 last won the day on May 7 2016

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About michel123456

  • Rank
    Molecule
  • Birthday 06/08/60

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  • Gender
    Male
  • Location
    Athens Greece
  • Interests
    everything
  • Favorite Area of Science
    time & space
  • Occupation
    Architect

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  1. What are you listening to right now?

  2. What are you listening to right now?

  3. What are you listening to right now?

  4. What are you listening to right now?

    and
  5. What are you listening to right now?

    http://nigelstanford.com/TimeScapes/
  6. Length Contraction

    Is it an established fact that objects are 4D? Can't you interpret Relativity with 3D objects diving in a 4D continuum?
  7. Is the Hubble Shift a relativistic illusion?

    The part Bolded by me. You could use your math skills to explain why the spiral galaxy is spiral. Maybe using the equations together with some principle, like the principle of minimum energy, or the principle of least action. That would be nice.
  8. Is the Hubble Shift a relativistic illusion?

    If you are correct, doesn't that mean that what we call the Big Bang is in fact a relativistic illusion? A phenomenon that appears for any observer in the Universe, no matter where he is, no matter when?
  9. The time keeper chandelier, how does it work?

    OK The bottles are connected with a circular pipe. The bottles are placed at different height, low and lower at regular interval. They cannot be moved because there are 2 openings in it for the horizontal pipe. It looks to me the horizontal connecting pipe plays the role of communicating vessels. In this case the pink oil in the lamps is too low in the pictures, it should go over the horizontal pipe. That would mean that the system is designed in such a way that all lamps have the same level of oil when filled. The lamps will burn a different amount of oil (and time) because the lamps are positioned at different height. Now we have the radial pipes. Are they pipes? Or simply a structural hanging system. The fact that the same configuration, with a central "tank" is common to both pictures (and to a 3rd not posted here) makes me think that the radial system is made up of pipes. It means each bottle has 3 side holes (2 for the horizontal pipes + 1 for the radial) It looks like the oil filling procedure is done by filling the central tank. The oil flows by gravity from the central tank into the bottles, equally filled because of the communicating vessel effect. But then, why are the radial pipes connected to the central tank at mid height and to its bottom? Is this a kind of decantor? How do you open the central tank? (it is hanged) Do you need to take the whole chandelier down? If one fills the central tank, it may happen that the quantity inside the bottles gets much higher than expected. There is no apparent system to regulate the quantity of oil in the bottles, only that the quantity is the same. IOW if I understand clearly the system is made to regulate the gap between the extinction of the bottles. It determines a duration, but does not determine when this duration will begin. Any comments? And when you fill the system, How does the air go out? I mean, the air that is in the closed bottles, does it go out through the cap of the bottle?
  10. I stumbled upon this ancient time-keeping device,The Chandelier Clock of Ibn Yūnis , The principle is simple, each lamp is burning a certain amount of time. You have to put in each lamp a specific quantity of oil in order to burn, the first for 2 hours, the second for 4 hours etc. With the subtility that in antiquity (& medieval times) the hour was not standard but it was a portion of daytime. When the day was short, the hours in sunlight were short & in night time were long. Here below the description of the object And here a couple of images I am seeing that the lamps are not at the same height. i see they are all connected (for same air pressure? I don't understand the central container and the tubes that join the one with the other. Has anyone an idea? Thanks
  11. Welcome to the upgraded SFN

    What is the LeaderBoard? http://www.scienceforums.net/leaderboard/
  12. What are you listening to right now?

  13. What are you listening to right now?

  14. What are you listening to right now?

  15. What are you listening to right now?