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swansont

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Everything posted by swansont

  1. The Secret Service pounced on the pretzel and wrestled it to the ground before that could happen.
  2. You lose causality. Effect can precede the cause, in some frame of reference. Which is a contradiction. It's not "just because" relativity says it - relativity has been tested, so we are pretty confident that it's right.
  3. This is worded a tad awkwardly. The acceleration to large speeds gives the particles the energy. It isn't produced in the collision.
  4. The kicker with the larger planets is that I think it's the large gravitational forces that tear the moons apart and/or keep them from forming in the first place. Obviously with the Earth that's not happening. I'm not sure how much the moon sizes matter. It's possible that if the moon were destroyed, but the mass were kept in orbit, that it might gravitationally re-coelesce to some extent.
  5. The gravitational force varies as the inverse-square of r.
  6. swansont

    Enrichment

    grade 12 where? Curricula vary from country to country (and in the US, probably from state to state) And what one person means by grade 12 might be different as well. When I was in 12th grade, I was taking calculus. Is that what you want?
  7. swansont

    Gain

    Output/input > 1
  8. But...but...but...they use them on STAR TREK!
  9. I thought Time was a magazine...
  10. Yes, but that's part of the point. All things are not equal in this effect.
  11. Do you have any credible sources that equate dark energy with quantum fluctuations?
  12. In general, yes, you can tap into stored energy of a magnetic field. But in a permanent magnet I don't think it's so easy, because you'd have to be able to re-orient the domains to do so.
  13. Sticking to a magnetic floor doesn't simulate gravity for the whole body, so you'd still have the muscle atrophy and bone loss problems. It's not really different than a tether.
  14. Here is much of what I do, when I'm not pushing papers around my desk.
  15. I have generally better toys at work than I do at home.
  16. That's the atomic mass unit you are defining, not the electron mass. There are Avogadro's number of amu's in a gram.
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