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Showing content with the highest reputation on 08/25/23 in all areas

  1. They released his fingerprints
    2 points
  2. I reject this point on at least two distinct fronts: 1) We CAN, and very often do, teach things to others about a topic even when lacking a full understanding ourselves. It happens all of the time and every day across the world. We teach the parts we DO understand even if our own understanding is limited... even at the university level this is true (case in point: we don't "fully understand" blackholes nor QM, either) 2) I posit that there is no such thing as "full understanding" and that there is ALWAYS room to learn more and grow and add to our existing knowledge. The wisest students recognize that the more they learn the more they realize they don't yet know. Our understanding is always fractional and provisional, so your threshold criteria for teaching here is itself impossible to achieve.
    2 points
  3. Yes, mitochondrial DNA comes only from mother.
    1 point
  4. Charlie Daniels weighs in on yesterday's news...
    1 point
  5. Go for C if you want to become an electrical engineer, to learn basics or create operating systems. C++ is best for game development. C# is best for enterprise applications. My advice is to don't develop games in unreal engine, gamemaker or godot, instead use a rpg maker when making a game, it is more rewarding and more fun.
    1 point
  6. Found the paper I was looking for. Bunn and Hogg examines cosmological redshift in context of both gravitational redshift (would thus include time dilation) and Doppler shift. (Only involves time dilation in the relativistic scenario). He concludes that as free fall observers and emitters apply, then the latter case is more accurate than the previous. https://arxiv.org/abs/0808.1081 One of the problems with the former and latter case is that you end up applying a large number of infinitesimal calculations between observer and emitter.
    1 point
  7. That has been looked into, if you run the time dilation calculations using cosmological redshift as gravitational redshift. You will hit infinity at the Hubble horizon as that is also the point where recessive velocity which is an apparent but not actual kinetic velocity will exceed c. It may help to consider that the other major evidence of expansion isn't simply redshift. The most important evidence is the temperature decrease due to an increasing volume. The other detail to consider is extreme efforts have been made from all the steady state supporters that didn't Like the idea of the BB. Nearly every possible effort to find counter arguments have been tried. They all failed. Time dilation aspects included. If your really looking into an aspect of expansion with a time dilation effect. Look into the integrated Sache Wolfe effect. It should give you some indication of some of the time dilation aspects many aren't fully aware of. It directly involves the stages where the universe switched from radiation dominant to matter to Lambda dominant and the surface of last scattering (CMB) Another detail is the typical cosmological redshift equation ie the one I posted earlier in the article isn't the one a professional cosmologist uses It doesn't take into consideration the evolution of radiation, matter and Lambda
    1 point
  8. (url deleted The Chelyabinsk event in 2013 stands as a stark reminder. A relatively small asteroid resulted in extensive damage, injuring over 1,200 people. On a more colossal scale, the catastrophic asteroid impact 65 million years ago disrupted Earth's ecosystem and led to the extinction of the dinosaurs. In responding to this challenge, agencies like NASA's Planetary Defense Coordination Office have been at the forefront. Their mission? Detect, track, and strategize against these celestial threats. The advanced techniques employed, from kinetic impactors to gravity tractors, are a testament to human ingenuity in safeguarding our planet. Furthermore, this defense is a collective endeavor. Renowned global organizations, including the UN's Office for Outer Space Affairs and the International Asteroid Warning Network, collaborate to create an integrated response to asteroid threats. In essence, while the vastness of space presents uncertainties, our commitment to planetary defense and collaborative efforts ensure a proactive stance against potential dangers. Dive into this exploration to grasp the seriousness and science of preserving Earth's safety in the face of celestial challenges. #asteroidimpact #asteroidhittingearth #planetarydefense #nearearthasteroid #asteroidlive #nasa
    -1 points
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