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  1. bob012345 replied to the thread I How does observation affect reality.

    Good points! Glad you agree that the theories need to be testable. I assume you mean beyond computer 'experiments'.

    Apr 28, 2017 at 1:25 PM
  2. Tommy R liked Biker's post in the thread B Deriving the ionization energy of a hydrogen atom.

    You forget to add the kinetic energy of the electron :)

    Apr 28, 2017 at 1:20 PM
  3. Tommy R replied to the thread B Deriving the ionization energy of a hydrogen atom.

    I tried this out and got it working! And it made a lot of sense, Thanks! Assuming the electron is obeying bohr's model of the atom its...

    Apr 28, 2017 at 1:19 PM
  4. nigelscott posted a new thread.

    A Dimensional Regularization of Feynman Integrals

    I am looking at Appendix A Equation 52 (Loop Integrals and Dimensional Regularization) in Peskin and Schroeder's book....

    Forum: High Energy, Nuclear, Particle Physics

    Apr 28, 2017 at 1:15 PM
  5. 256bits replied to the thread Airliner engineering questions.

    You probably have a misunderstanding of what an EMP is, as do most people. An EMP can be generated from a spark from static electricity...

    Apr 28, 2017 at 1:15 PM
  6. kimbyd replied to the thread I Cosmic background radiation.

    The scale factor 6.8 billion years ago was at roughly ##a=0.55##, which means the CMB temperature would have been ##2.725K/0.55=4.9K##....

    Apr 28, 2017 at 1:13 PM
  7. PeterDonis replied to the thread I How does observation affect reality.

    Only if we assume we will never see any evidence that contradicts them. Physicists anticipate that we will: that at some point, when we...

    Apr 28, 2017 at 1:12 PM
  8. Gianmarco posted a new thread.

    Interpolating data of a bandpass filter with Q=10.4

    Hello everyone. I'm trying to interpolate the data taken (frequency in Hz vs A in dB) from a bandpass filter with Q = 10.4. The problem...

    BPoutput.png

    Forum: Electrical Engineering

    Apr 28, 2017 at 1:10 PM
  9. tony873004 replied to the thread I How far are the probes that were sent out.

    Or Press "L" on your keyboard. I don't think you timed it right on my simulator. Try this. 1. Open the simulation. 2. Press Pause [||]...

    Apr 28, 2017 at 1:09 PM
  10. George Jones replied to the thread A Supplementary material for standard model.

    Section 31.2 of discusses this specific example, but not in any great detail.

    Apr 28, 2017 at 1:09 PM
  11. PeterDonis replied to the thread I Time experience of light in Minkowski Diagram.

    Your question in post #6 is meaningless. It's not "physically impossible". It's meaningless. It doesn't have an answer "according" to...

    Apr 28, 2017 at 1:09 PM
  12. bob012345 replied to the thread I How does observation affect reality.

    If that were true there would be little enthusiasm for the push for more basic unification theories. Separate theories adequately...

    Apr 28, 2017 at 1:08 PM
  13. DrChinese replied to the thread B entangled particles and lorentz contraction?.

    The remote particle can be acted on by the black hole, sure. It just does have any particular back reaction that could be observed on...

    Apr 28, 2017 at 1:07 PM
  14. JohnnyGui attached a file to the thread I Time experience of light in Minkowski Diagram.

    Yes exactly, that's what I indeed realised and stated in my OP as a second question. Got confused there. Thanks! As for my question in...

    Minkowski.png Apr 28, 2017 at 1:07 PM
  15. DrChinese replied to the thread B entangled particles and lorentz contraction?.

    OK, a couple of more facets on entanglement and your black hole idea. 1. The particle going into the black hole does not send any...

    Apr 28, 2017 at 1:06 PM
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