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Everything posted by mathematic

  1. It is too soon to say. There are about 100 billion stars in the milky way. Only an infinitesimal number has been explored to determine whether life supporting planets exist.
  2. The Big Bang was less than 14 billion years ago. The speed up of the expansion was discovered during the 1990's by using supernova 1A /science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy https://www.e-education.psu.edu/astro801/content/l10_p9.html
  3. Gravity and e-m forces can be made 0 in isolation. Place object halfway in between attractions of equal strength. Also neutral things don't experience e-m.
  4. In the latest issue of American Scientist there is an article by Tony Rothman questioning E=mc^2. Are the assertions made in the article valid? Are there comments by other physicists available?
  5. Several rinses with small amount of water each time is better than one rinse with a lot of water.
  6. Usual definition of open - singleton is NOT open. Every neighborhood contains points outside the set.
  7. What do you have in mind? ' new mathematical model's of the formulas'
  8. That is the reason for fuses and circuit breakers. Cut off current when it gets too high.
  9. A major problem between them is trying to describe what goes on inside a black hole. GR ends up as a singularity. QM says impossible.
  10. 1. All evidence points to accelerated expansion. 2. Singularity is a mathematical artifact. Physics is unknown. 3. Pre-big bang is pure speculation.
  11. It looks like the min and max occur when sin = 0 (0 or 180).
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