swansont

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?

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?

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?

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.

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.

How do you capture it?

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.

It’s descriptive. 3 meters is not the same thing as 3 kg or 3 seconds. Arguing about “truth” is a red herring.

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.

We know that classical descriptions fail at small scales. That’s the mathematical nature of singularities. GR is a classical theory.

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.

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

But relativity does not “turn the earth into a pancake” because that implies something is happening to the earth. The earth is a pancake in certain frames of reference. That’s always the case.

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.

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.

That’s not being refused treatment. That’s refusing treatment.

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

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/

Different observers will measure different shapes for anything that’s not a point particle. Nuclei in accelerators (such as the RHIC) will be more “pancake” than spherical, and this affects the charge distribution when modeling the interaction in the frame where the nucleus is moving. The claim is not wrong, but it doesn’t demonstrate the point they are claiming. I would go a step further and say that we can transform between frames, so the notion that it’s a “different location” is likely another manifestation of the fundamental misunderstanding of relativity. Transforming from (x,t) to (x’, t’) is an acknowledgment that it’s the same location, but each observer has their own coordinate system. The particle is not in two places at once. One person can say a location is 123 Main St while another describes it in terms of latitude and longitude. One location, two ways of describing it.

It’s not like this is a new phenomenon that appeared with COVID.

True of any relative property.

They are.

And yet we do it all the time. We tell them to drive under the speed limit and stay off the grass, and punish them when we catch them doing those things. Laws and regulations are part of the equation. I agree, but that’s not the only leverage. Get vaccinated or we fire you. If you’re not vaccinated your work-related health care won’t cover your COVID treatment (probably only applies to the US system).

That’s nonsensical. There is one particle, and “relative to itself” isn’t a thing. “Relative” requires two frames.

A muon being shaped like a worldline is not “well known” and not a true statement. It doesn’t have a physical effect. That’s your persistent misconception. Length contraction does not involve stress or strain or compression or any physical effect. A length is shorter when measured from a moving frame. No, it means you continue to misunderstand what superposition is, and what length contraction entails.