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Everything posted by swansont
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! Moderator Note Unsupported guesswork is not a theory. More rigor was requested and none supplied, so this is closed.
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That’s what the quoted part said - it’s lower than the unconfined (i.e. free-space) vacuum. Which is not zero.
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They have energy, so they would, but likely their contribution would be far smaller than whatever the source of the field was ! Moderator Note This discussion needs far more rigor than is in the OP. Formatting fixed. Also, link removed in accordance with rule 2.7
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If you must respond to obvious spammers, for the love of Zeus, don’t quote the spam link. You’re helping them by padding the SEO they seek with a second link, and since we’re going to ban them anyway, you’re just creating extra work for the mods because now we have to go and hide your post, too. So not only aren’t you helping, you’re actively making things worse. We would rather you just report the post, and beyond that, ignore it.
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No, that’s not correct. The pressure under water will be the atmospheric pressure plus the pressure from the weight of the water, pgh (p is the density) You add 1 atmosphere with a column of water of about 10.3 meters, or ~33 feet. Water is almost incompressible, so you add another atmosphere for each 33 feet.
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For the first time in 12 years tourists are in space
swansont replied to Kevin_Hall's topic in Science News
…in space -
! Moderator Note No, assertions are not evidence. Repeating yourself does not make things true. As you have not presented us with a model or testable scientific predictions, as the rules require, this is closed. Do not re-introduce this topic.
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Neutron absorption in Li-7 requires ~2.5 MeV to produce tritium. It’s endothermic. That energy is not available for heating anything. Wait. “Ask the designers” implies that this system is in place somewhere. I though this was your proposal. What reactor is doing this?
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If it’s endothermic (Li-7), the Q of the reaction is not available. The energy of neutrons not absorbed is not available. Lithium melts at 180.5 °C What happens if the water line shuts down? Are you going to run the risk of it getting hot enough to generate steam, and then have the lithium melt when a pump fails?
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That thermal energy is not captured by the plasma. Neutron absorption by Li-7 is endothermic. AFAIK no fusion reactors have incorporated these components. Why would they, when we’re so far from break-even?
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Which field physics does this fall under? Your definitions are related to models, not reality. If it’s truth you seek, Dr. Tyree's philosophy class is right down the hall. And you need to provide evidence of an infinite universe.
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Yes, and the point is…what? Mass, length and time are separate concepts, and are used differently in physics. Accuracy and precision have nothing to do with units. This remains irrelevant to the discussion.
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How do you capture it?
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Physics isn’t in the business of telling us about reality. It tells us how nature behaves. If it actually describes reality that’s a happy accident, because how do you test for that? If your experiment is at the highest precision you can achieve, there’s no way to discern an underlying behavior. There’s always a “black box” and we can’t see inside.
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It’s descriptive. 3 meters is not the same thing as 3 kg or 3 seconds. Arguing about “truth” is a red herring.
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If your resolution was one meter, you could not have a result that’s exactly one meter. That’s an issue of significant digits and precision, though, not units. There used to be. Made of platinum and iridium. It was, by definition, one meter. One problem is that copies are not perfect. ! Moderator Note This is off-topic and would need to be argued (and supported) in its own thread.
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We know that classical descriptions fail at small scales. That’s the mathematical nature of singularities. GR is a classical theory.
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Logic is not a substitute for evidence, and evidence is interpreted via models that allow for comparison and prediction. It’s not enough to just be logical. Newtonian/Galilean physics, for example, is logical, but it doesn’t match experiment, so at best it’s an approximation You can do whatever helps you to gain insight, but relativity would not have been accepted without experimental confirmation.
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Here’s an interesting take on the Fermi problem that’s related to this - the dark forest. Not bringing attention to yourself because someone out there might annihilate you. https://kottke.org/21/12/the-dark-forest-or-why-we-should-keep-still-and-not-look-for-aliens
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The length is different, but nothing has changed. Should have? There’s no situation where they should have decayed, because that’s not in accordance with the laws of physics. You can’t make the comparison to what happens if the laws of physics are different. That’s ridiculous. It’s not a change in the shape. The shape depends on the frame of reference. But you’re arguing based on one set of physics laws and some other set of laws. Surely I get to fabricate the same thing.
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Not according to relativity, which is what we’re discussing. Why not? The contraction of the length doesn’t affect the “structure of the universe” As you have acknowledged, length is not a physical object. It’s merely the distance between tow points, which is shorter when there is relative motion. Tell that to an object in its path. As I explained, it’s not in a different position, and also please review the explanations about superposition. Ignoring everyone and repeating your misconceptions is not a path forward here. You don’t understand relativity and you don’t appear interested in fixing that.
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That’s not being refused treatment. That’s refusing treatment.
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A systemic refusal? Citation needed. Continued smoking might e.g. rank them lower for a lung transplant, (similar to an alcoholic and a liver transplant) but that’s not the same as being refused treatment
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Gravitational sources? If that means hydroelectric, then the reliability can be impacted by drought conditions, as the US is seeing. https://www.smithsonianmag.com/smart-news/western-drought-drives-decline-in-hydroelectric-power-generation-180978862/