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  1. J

    I Clock hypothesis, gravity time dilation and Equivalence Principle

    Also, if acceleration can be decided just by the distance between endpoints, which is a result of different parts of the spring being at rest in different frames, then if we were to consider 3 balls connected with a simple string, giving no resistance, as in to consider this system an "object"...
  2. J

    I Clock hypothesis, gravity time dilation and Equivalence Principle

    Maybe it isn't. I am currently in the process of figuring if measuring an object which does not have all its parts at rest within one frame is going to give me the proper results. I guess what i am looking for is the exact process to get the acceleration value a spring like accelerometer would...
  3. J

    I Clock hypothesis, gravity time dilation and Equivalence Principle

    well yes, what i meant is that not every part of the spring is in the same rest frame but in a different one during the acceleration process.
  4. J

    I Clock hypothesis, gravity time dilation and Equivalence Principle

    Is a spring with a mass attached to it a properly designed accelerometer? If yes, then which spring's part reference frame would you use to measure the contraction of the spring while it is under acceleration as the various parts aren't in the same frame during the acceleration process, or at...
  5. J

    I Clock hypothesis, gravity time dilation and Equivalence Principle

    Ok, but how does one prove that? For example. If i imagine a spring with a mass on it, and consider this my accelerometer, then as i understand it, by design, this accelerometer works by checking the distance between the front and the back of the spring's body. For the accelerometer, the...
  6. J

    I Clock hypothesis, gravity time dilation and Equivalence Principle

    I am puzzled myself about this. Einstein seems to have made a distinction between pairs of two cases. pair A) accelerating rocket with an observer inside and some observer on the surface of a planet "feeling gravity" (whatever feeling gravity means - a very unscientific expression IMO) pair...
  7. J

    Ball bouncing on a planet (no atmosphere) follow up questions

    There is just one thing that puzzles me still. If we can look at this from any reference frame and both energy and momentum are to be conserved. How is momentum conserved when we look at the case where the ball just turned all it's kinetic energy into potential and is at it's highest point...
  8. J

    Ball bouncing on a planet (no atmosphere) follow up questions

    Energy is never lost. The question is, if a ball hits another bigger ball (in this case, the planet) in an elastic collision, then does the smaller ball transfer some of it's energy to the bigger ball because of energy and momentum conservation? The answer to that, is yes I believe. It being an...
  9. J

    Ball bouncing on a planet (no atmosphere) follow up questions

    So my next question. On the same planet with no atmosphere, the ball was bouncing on and came to a halt after some time, we now place a long, closed at the bottom, hollow cylinder/pipe, extending far into space. We are not concerned on if such a material to sustain the pipe without breaking...
  10. J

    Ball bouncing on a planet (no atmosphere) follow up questions

    This is what I thought would happen as well. If no one objects to this after some time, I will continue with my follow up questions.
  11. J

    Ball bouncing on a planet (no atmosphere) follow up questions

    This thread will contain several follow up questions, but let me start with the most simple one. Imagine a planet with no atmosphere and a ball in empty space. The ball is dropped on the planet from a certain height and starts bouncing. We ignore friction and consider this to be the fully...
  12. J

    Would this device(pic inside) work for boiling cold water?

    This should be easy to confirm experimentally. Surely, if the earth's atmosphere pressure was less, such that it would be close to the boiling point of water at room temperature, it wouldn't make a difference to the experimental outcome as you describe it, I would think. So all we would need...
  13. J

    Would this device(pic inside) work for boiling cold water?

    Maybe a better way to explain it by going macroscopic. Let's say we have a bunch of cannon balls with springs attached to them. Those cannon balls also have solar panels attached to them along with a pressure-meter. When the sun shines, the energy generated by the solar panels, is used to...
  14. J

    Would this device(pic inside) work for boiling cold water?

    So you agree that if we thinned the atmosphere of earth to the point it would resemble the dome atmosphere, we could extract energy out of this system, but for the dome you believe that we would actually have to put more energy in into maintaining the vacuum or pressure to be more precise. Well...
  15. J

    Would this device(pic inside) work for boiling cold water?

    The last part comes from experiments like this one In a vacuum water boils and turns into ice later. You end up with colder water if you somehow would extract the kinetic energy out of the steam, would you not? Or let me put it differently. If let's say our atmosphere was much thinner, to a...
  16. J

    Would this device(pic inside) work for boiling cold water?

    I will first state my follow up question independent of the dome, as depending on the answer to it, it might become irrelevant. Imagine a long cylinder with a piston. We fill the cylinder with some water. The piston is right on top of the water. Now we pull the piston, creating a vacuum inside...
  17. J

    Would this device(pic inside) work for boiling cold water?

    Yes, the vacuum should be greater at the domes inside the way I imagined it. However, if as you say, you could get a great enough vacuum to boil water at room temperatures with a tall enough dome, with enough "vacuum space" on top of the water level, then I guess only 1 dome is required for my...
  18. J

    Would this device(pic inside) work for boiling cold water?

    Because the water levels would be too high otherwise, and there would not be enough space left above the water level.
  19. J

    Would this device(pic inside) work for boiling cold water?

    Imagine some giant glass(or other material) dome placed on top of some ocean or lake. Then pump some air out of this dome, until the water level rises a few meters under the dome. Place another dome below the first dome, and repeat the process, resulting in a little less pressure in the second...
  20. J

    B Quantum tunneling - Questions about some pop-science claims

    I don't understand why you say that instantaneous becomes meaningless in the context of SR/GR, just because it is frame dependent. Simultaneous is also frame dependent in SR but not meaningless. I can observe someone traveling to the moon at 0.5c, reaching the moon in 2 seconds. Another at...
  21. J

    Getting energy from deep ocean pressure

    Tell that to the people that lived near Chernobyl or Fukushima. You are really going to use the placement of a power plant as a design difference in the context I mentioned it? Have fun trolling someone else...
  22. J

    Getting energy from deep ocean pressure

    Part of the plan was to get clean distilled water out of this, which you do with the molten salt solar power plant for example. This is why I mentioned sahara desert etc. So how would this work in your "thermodynamic closed system". Do you have any better design to propose which is cost...
  23. J

    Getting energy from deep ocean pressure

    Sure, if you ignore the "among other methods" part, like having an array of mirrors heat up the water and turn it into steam etc. But we are past the first post anyway. I already agreed with other posters here based on the input that it wouldn't be efficient enough.
  24. J

    Getting energy from deep ocean pressure

    No it doesn't. At all points one of my main goals was to think about how to get the water out of the hole. Be it just by the sun shinning passively etc. If I can build a solar power plant on ground level, which requires water as well, that has to be pumped there, How is my design worse, if...
  25. J

    B Quantum tunneling - Questions about some pop-science claims

    So basically, if I am interpreting this comment correctly, there are many different models of QM which give different predictions when it comes to tunneling, plus we do not have any experimental data (we can trust) related to tunneling which could tell us if or not particles/molecules/larger...
  26. J

    B Quantum tunneling - Questions about some pop-science claims

    Maybe one last question to clear things up. I was asking specifically for __instantaneous__ tunneling which you seemingly agreed on is possible, but then went on to contradict yourself as it appears to me. This means that if that note is next to you at x=0, t=0 (you placed yourself in the...
  27. J

    Getting energy from deep ocean pressure

    Compare your system which requires water pumped towards it, in order to create steam to the system I proposed. The molten salt is just required if you want to store energy, to use at night. In my case I proposed two extra basins which have a similar functionality but also can be used for tidal...
  28. J

    Getting energy from deep ocean pressure

    Another question related to the above. What would happen if we dug the deepest hole possible technically, and supposed that we would not hit on any oil or water etc pockets, we would just pipe all incoming water after extracting the energy into said deep hole.. preferably one that reaches...
  29. J

    Getting energy from deep ocean pressure

    For the record, I DID notice that my initial deep ocean water pressure power plant turned into a water pressure/solar/tidal power plant.
  30. J

    Getting energy from deep ocean pressure

    On rethinking it, it might be a stupid idea to use the energy you got from the water pressure to evaporate the water out. Instead the mirrors inside the dish should do the job well enough. Another advantage of such a system would be as I see it, that at night when there is no sun, you could fill...
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