Jump to content

swansont

Moderators
  • Joined

  • Last visited

Everything posted by swansont

  1. ! Moderator Note Threads merged Deja vu all over again
  2. A charged particle in a B field will move in a circular (or spiral) path. The force is perpendicular to the velocity (F = qv x B). No work.
  3. He’s already made campaign promises based on it, and it’s not like he can stick to a script, so good luck avoiding all the hot-button issues.
  4. ! Moderator Note Advertising is not permitted. Link removed.
  5. Thus far there is zero content that complies with the speculations rules regarding a new idea, so there’s nothing to stitch together
  6. ! Moderator Note You are free to ask questions about dark matter, but if you have no model to present, then please refrain from mentioning your “theory”
  7. Field lines aren’t physically real, they are a convenient way of describing the value of the field, like elevation contour lines on a map. Interaction with field lines is just a way of looking at an equation the depends on E or B, or on a derivative, which is sometimes referred to as “cutting” a flux line. It’s conceptual only.
  8. I think this is moot; this isn’t a lecture, it’s a discussion forum. I think it’s an unreasonable expectation. I don’t see where you’ve typed in all that many equations in these discussions. I wonder, if you had done so, if your typing skill would stand up to the same scrutiny and criticism you have offered up.
  9. Much the same way you “fix” a pet
  10. But if they have positive energy, when they annihilate you have energy where you had none before, which means energy is not conserved. It’s not what I require, it’s what the description of Hawking radiation requires. Not sure where this comes from We’re talking about the virtual pair, though, without other constraints. IIRC the magnitude of the gravitational PE is less than the mass energy in this situation, so one particle escaping has to result in a loss of energy from the BH. The coordinate system isn’t going to matter (it can’t; you can’t have something that happens in one frame be impossible in another) It’s not a weird, fake theory. This is a common description of Hawking radiation. https://www.sciencealert.com/hawking-radiation# http://www.physics.hmc.edu/student_projects/astro62/hawking_radiation/radiation.html
  11. Do you have a model and/or evidence for this?
  12. You learned that virtual particles have positive energy? What happens when the pair annihilates?
  13. I took that as differentiating between the particle and the antiparticle. matter vs antimatter.
  14. You don’t quote (including enough for proper context) or link to this claim. That’s what I mean by not bringing the receipts. The mention that I saw was here, in the context of Hawking radiation, and the particle that reduces the mass of the BH is indeed associated with a negative energy, because it’s a virtual particle/antiparticle pair. That’s why the mass decreases, and how you get real particles emitted as radiation.
  15. At least two of the objections above are likely typos; = instead of + and n instead of N are issues of not hitting the “shift” key at the right time. If you can’t be charitable about typos, you might not have the right temperament for online discussion. I can’t fathom how one gets from that to “pseudoscience” And as I’ve suggested before, complaining without bringing the receipts? No. It’s just whining.
  16. What’s the made-up part? What is your support for the claim? And what is your definition of pseudoscience? It must differ from mine.
  17. Horrible89 banned as a sockpuppet of ImplicitDemands
  18. As I said, we use the earth because that’s where we are. That makes it best purely from a practical standpoint, much like choosing a particular frame of reference makes it easier to solve a problem. You won’t get a different answer by using another frame, as Mordred notes above.
  19. I agree that this isn’t going to affect anything. Points of fact can be discussed in their own threads. I don’t know what axe there is to grind here, but that’s what this feels like. “Is this word salad?” smacks of argument by personal incredulity. If it was, one should be able to point out why. If you don’t know, it means you don’t have sufficient knowledge to tell. Labeling it as pseudoscience is similar - you should be able to show that it is, and nothing close to that has happened
  20. How does time running slower in the past mean that it is expanding? Doesn’t that imply a longer duration? i.e. slowing down?
  21. Doesn't matter; the expansion is not from a single point. We use the earth because that's where we are.
  22. Thread bumping is something we discourage. Other people probably feel similarly about some of their own threads, and if they all get bumped, nothing changes - a thread on page 4 is still on page 4.
  23. it’s not offered as a definition; as I said, you assume certain knowledge on the part of the thread originator. The context of the statement was in response to a claim about reference frames - “A worldline cannot be associated with two different reference frames” The issue is whether the statement is correct or not. An answer to a post is not expected to be a tutorial on the topic. It certainly does not rise to the level of pseudoscience
  24. And yet there are manufactured controversies.

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.