Recent content by marcusl

  1. M

    I Large Synoptic Survey Telescope -> Vera C. Rubin Observatory

    That app in the previous post has a nice guided tour, with more to come. Here's a link to a short news story with some additional amazing images https://physics.aps.org/articles/v18/122
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    Other NDAs as a consultant/contractor

    In my experience, it's common for the client to own everything they've paid for without having to acknowledge the source (consultant). The "non-disclosure" part of the NDA's that I've seen and/or been party to expire after a certain time, however, usually five years.
  3. M

    I Road crossing problem from AEH Love's text

    If the breadth of the road is c, normal to its length, then the breadth b of a bus must also be measured normal to its direction of travel. (Thus b is bus width, not length.)
  4. M

    B Can a filter based on the photoelectric effect reduce the noise floor?

    You seem to be mixing up concepts that are unrelated. The photoelectric effect is a quantum phenomenon while antennas, signals and filters are classical.
  5. M

    Superconductor at room temp

    So you’ve invented a room-temperature superconductor?
  6. M

    Superconductor at room temp

    You may not be aware that there are no room temperature superconductors—yet. Superconductors expel magnetic fields, so one way to tell if you have a superconductor is to place it in a uniform magnetic field, cool it through the transition temperature, and watch the external fields change.
  7. M

    History Memorable quotes in the history of physics

    See also this thread for other quotes: https://www.physicsforums.com/threads/what-do-these-famous-quotes-reveal-about-the-minds-of-great-scientists.767804/
  8. M

    Modern Digital Audio: Understanding Dither and Oversampling in Hi-Res Age

    This is correct. A finite sequence sampled from a longer continuous waveform cannot be exactly reconstructed. The energy lost can be calculated by setting up an eigenvalue problem whose kernel is a sinc function (of course!). Eigenfunctions in the continuous case are the prolate spheroidal wave...
  9. M

    So a chemist walked into a physics forum .....

    How does the rest of the joke go? 😊
  10. M

    News Gerard't Hooft Interview

    Who besides Josephson?
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