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Moreno

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Everything posted by Moreno

  1. So, you believe that safety issues is not a problem at modern stage of tech.?
  2. What prevents government incentives to make all garages supply it and make all cars bi-fuel? Or even completely transfer from gasoline to LPG?
  3. Why LPG is so unpopular in majority of countries as a motor fuel? Because of safety problems?
  4. Gravitation waves, antigravity, quantum gravity theory, Big Bang.
  5. For now only one physical effect is know which can suite to this purpose - the quantum tunneling effect.
  6. Doesn't it seem to you that ultimately the time came for EU to make the most decisive step in its history and accept Ukraine, Moldova, Belarus and Russia making economic unification of Europe complete in this way?
  7. Aluminum is much more convenient way to store energy than hydrogen. This is if you're not satisfied with biofuel which is as well conditionally carbon neutral as hydrogen. So why hydrogen?
  8. Does exist some kind of liquid by drinking which a human can make its body dielectric? It suppose to work like an "anti-electrolyte". Desirably it suppose to make body invulnerable to hundreds of volts and from low to high frequencies. Desirably this liquid suppose to have zero effect on any body functions.
  9. What if plant rotates in two dimensions simultaneously, around the axes and perpendicular to them? In this case there would be no permanent equator.
  10. Can there exist an unusual planet where according to some strange pattern of rotation no seasons of year and no significant difference in temperature between different places on the planet? It means there is days and nights but all places on the planet are illuminated by the star with the same intensity and periodicity. For example, what if planet exhibits very fast and large axe precession?
  11. Among all the mammals humans have the longest hair and beard. The apes are claimed to be closest to humans physiologically. But they have scarce hair on their faces. A bonobos A Chimpanzee A male gorilla A gibbon A An orangutan male At least non of them have such thing as a fully-developed mustache. Someone can argue that non of the apes live in a cold climate in difference from humans. But here are some representatives of a nations who always lived in a hot climate. g
  12. I think a good example of the effect I talk about is watching movies or listening music. Hardly some person will watch even the most interesting movie every day during the years or listen the most beautiful song whole days for a years around.
  13. What is the neurophysiologic mechanism which stands behind the tolerance? For example, if we offer a good cake to a person who didn't eat any confectionary for a while, majority of people will find it tasty. However, if we will feed the same person with a good cake every day, majority of people will find it not as pleasurable let say after a year of the regular cake consumption. What happens to the brains of people when phycological response to some stimulus dulls with time? Can we do something to the brain, so it will always excite with the same strength to some particular stimulus? I think the same thing can be related not necessarily to the sensory perceptions, but also to the world of fantasies. For example, it is difficult to find a man who would be obsessed with idea to purchase some particular make of the car for all his life and wouldn't give preference to a newer and better model when he will ultimately get money to purchase a high class auto. Etc.
  14. How can it be explained that Platinum has the smallest Seebeck coefficient among pure metals which is conditionally taken for zero? https://en.wikipedia.org/wiki/Seebeck_coefficient#Definition
  15. Well, obviously I meant: "all the valence electrons are free". Though this is a rude approximation.
  16. It seems that some thermoelectric effects (such as Seebeck and Peltier effects) can be associated with carriers (electrons and holes) generation and recombination. But thermoelectric effects can be observed in many metals as well, not only in semiconductors. Can there be such effects as carrier generation and recombination in metals? It doesn't seem to be possible as all electrons in metals are typically free electrons even at 0 K, at elevated temperatures all the more so. How then could there be an electron-hole recombination in metals? For example in Bismuth, Antimony, etc.?
  17. Why there exist a large discrepancy between electrochemical potentials (Fermi levels) and standard electrode potentials? For example difference of Fermi energies between Sodium (3.24 eV) and Aluminum (11.7 eV) is larger than between Sodium and Copper (7 eV). http://hyperphysics.phy-astr.gsu.edu/hbase/Tables/fermi.html#c1 However if we look at standard electrode potentials we will see that potential difference between Sodium (-2.71 V) and Copper (+0.33 V) is much larger than between Sodium (-2.7 V) and Aluminum (-1.6). https://en.wikipedia.org/wiki/Standard_electrode_potential_(data_page) So, if we take in account difference between electrochemical potentials (Fermi levels) we would expect that reaction between Sodium and Aluminum will give us much more energy than reaction between Sodium and Copper. But if we look at standard electrode potentials we would expect otherwise. How can we explain it?
  18. Some solvation reactions are quite energetic (either endothermic or exothermic). Does it allow us to create an energy storage (similar to battery) in which energy would be generated when metal atoms pass to a solution through an ion-conducting membrane? If yes, how much energy may we expect to obtain and what about reverse-ability?
  19. I think that a fundamental physical laws similar to "energy conservation law" can be perceived on intuitive level only, no any algebra can be attempted to prove or disprove them. This is just a completely wrong approach. The laws of that kind as majority of other fundamental physical notions are rather philosophical than mathematical categories. And therefore belong to the realm of philosophy (and metaphysics).
  20. FLiBe is a molten salt made from a mixture of lithium fluoride (LiF) and beryllium fluoride (BeF2). It is both a nuclear reactor coolant and solvent for fertile or fissile material. It served both purposes in the Molten-Salt Reactor Experiment (MSRE). https://en.wikipedia.org/wiki/FLiBe During reactor operation Beryllium and Lithium are converted to other chemical elements by process of nuclear mutation, it seems.
  21. Sure, you can discuss them. Or any other kind of nuclear reactors. If I no make mistake LFTR's use thermal neutron spectrum rather than fast neutrons? What is bad about LFTR, I think, is they waste Lithium and Beryllium - a valuable metals. And other expenses are huge. I think accelerator driven reactors look more attractive.
  22. Not necessarily. For example this article describes a method of solid state refrigeration which doesn't involve a semiconductors. Word "solid state" in technics typically means there are no gases, liquids, or mechanicaly moving parts involved. http://journals.sagepub.com/doi/abs/10.1243/0954406042369062?journalCode=picb Direct charging generators[edit] In the first type, the primary generator consists of a capacitor which is charged by the current of charged particles from a radioactive layer deposited on one of the electrodes. Spacing can be either vacuum or dielectric. Negatively charged beta particles or positively charged alpha particles, positrons or fission fragments may be utilized. Although this form of nuclear-electric generator dates back to 1913, few applications have been found in the past for the extremely low currents and inconveniently high voltages provided by direct charging generators. Oscillator/transformer systems are employed to reduce the voltages, then rectifiers are used to transform the AC power back to direct current. English physicist H.G.J. Moseley constructed the first of these. Moseley’s apparatus consisted of a glass globe silvered on the inside with a radium emitter mounted on the tip of a wire at the center. The charged particles from the radium created a flow of electricity as they moved quickly from the radium to the inside surface of the sphere. As late as 1945 the Moseley model guided other efforts to build experimental batteries generating electricity from the emissions of radioactive elements. https://en.wikipedia.org/wiki/Atomic_battery#Direct_charging_generators
  23. No macroscopic quantities of liquid or gas inside of reactor is needed.
  24. I've already mentioned how. Some substances, such as boron-10 are capable to capture neutrons, convert to Lithium and radiate protons. Proton radiation subsequently can be easily converted to electricity with help of electrostatic converter. In this way no liquid or gaseous heat carrier is needed, potentially.
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