Recent content by Psnarf

  1. Psnarf

    I Why does light travel slower in water?

    All this time I thought light was a stream of photons. Maxwell's equations predict the probability of finding a photon. So, we're back to waves now?
  2. Psnarf

    B Defining 1 Second: The History and Science Behind Time Measurement

    "this is a chicken or egg situation" Obquote: "What is time to a chicken?" -Roy Blunt, Jr. GPS satellites have to keep a different time. Is the difference in time on Earth vs time in Earth orbit due to relativity or gravity? I read that one second to an observer near the center of a black...
  3. Psnarf

    I Follow an object into a black hole

    Thank you for being gentle to this retired systems analyst and lifelong learner. It's been over 40 years since I aced my 3-semester physics course. I'm starting over with Dr.Susskind's lectures from Stanford. First I have to forget everything I picked up reading physics-related twaddle published...
  4. Psnarf

    I Follow an object into a black hole

    I forgot about time vs. gravity. Time does not propagate at one second per second everywhere. I like the notion of collapse then exlode, that is, the center of a supermassive black hole is exploding outward, but one second near the center is a billion years outside the Schwartzchild radius. In a...
  5. Psnarf

    I Follow an object into a black hole

    Thank you for your reply. I was wrong to think there was empty space beyond the event horizon. I understand that mass accelerated to the speed of light would behave much like the common description of the singularity, stationary, formless, with infinite mass. I was wrong to picture two iron...
  6. Psnarf

    I Follow an object into a black hole

    Is there a theoretical model of what exists between the event horizon and the spacetime singularity?
  7. Psnarf

    I Follow an object into a black hole

    Forget about the astronaut. What happens when two streams of fermions are forced to converge? Can two electrons or two quarks fuse together? What if the object were a ball of iron? Would not iron fusion draw energy from the black hole?
  8. Psnarf

    I Follow an object into a black hole

    In Stephen Hawking's Brief History of Time, an astronaut is stretched head to toe by the gravitational gradient of a black hole. Let us replace the astronaut with a large object and follow it inside as it travels along a radial line toward the center. I assume the gradient increases with, say...
  9. Psnarf

    Stargazing Is There a Common Pattern in Einstein Crosses?

    An elliptic lens has two foci. Photons from one distant galaxy passing through the gravitational lens of two merging galaxies forming an ellipse with a super-massive black hole at each focus could produce two of the points of the cross. What could produce the other two? Another dual black hole...
  10. Psnarf

    I Quantum Entanglement: What I Know

    Forget about Pauli. I know not exactly how or why entangled particles have opposite metrics. |ud> - |du> We know that in the quantum world an observer affects the state of affairs. We know entangled pairs have opposite characteristics. We cannot know if those measurable characteristics were...
  11. Psnarf

    I Quantum Entanglement: What I Know

    Thank you for your kind replies. I was expecting: "You must be new!" As Dr. Feynman once suggested regarding QED, you cannot ask why it is, you must accept that is the way it is. Back to the books I go.
  12. Psnarf

    I Quantum Entanglement: What I Know

    I'm a casual observer. From my feeble understanding, I have come to think that the Pauli Exclusion Principal applies the moment two particles become "entangled." Both particles, due to their close proximity as entanglement arises, cannot have the same quantum state. We cannot predict the quantum...
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