Recent content by berkeman

  1. berkeman

    Hobby physicist

    Welcome to PF. :smile: Fixed that for you. :wink:
  2. berkeman

    Graduate Rotating Disk Method to Attain Light Speed?

    Thread is closed for Moderation...
  3. berkeman

    "A good big man will beat a good little man" (boxing)

  4. berkeman

    Undergrad Higher magnification calibration slide

    @Andrew Mason
  5. berkeman

    New Member, Mech. Eng. Sophomore

    Welcome to PF! :smile:
  6. berkeman

    Collection of Lame Jokes

  7. berkeman

    When it's published in an acceptable peer-reviewed journal, then I'll read it. From the PF...

    When it's published in an acceptable peer-reviewed journal, then I'll read it. From the PF Rules (see INFO at the top of the page):
    • berkeman
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  8. berkeman

    Collection of Lame Jokes

    Honoring Sensei Norris. :smile:
  9. berkeman

    Graduate Quaternionic Rays instead of Complex

    Thread is closed for Moderation.
  10. berkeman

    Introduction: penghongjiao - Physics Enthusiast

    Welcome to PF. :smile: Please be sure to read the PF Rules (see INFO at the top of the page). We do not allow personal speculation or discussing unpublished work here. We discuss mainstream science as published in the scientific literature (peer-reviewed journals and mainstream textbooks).
  11. berkeman

    Why do my 2-pin TV and HT systems give shocks on ports when ON together?

    Do you have a voltmeter or can you borrow/buy one? It only needs to read DC and AC (at Mains frequency). It would probably help you quantify the issues.
  12. berkeman

    Collection of Lame Jokes

  13. berkeman

    Valsalva and Eustachian tube

    Okay, fair enough. I've moved your thread from the Classical Physics forum to the Biology/Medical forum where it fits better. Can you give a scientific/medical reference for this premise? Thanks.
  14. berkeman

    Valsalva and Eustachian tube

    @Kiv -- is this question for schoolwork? What is the motivation for the question?
  15. berkeman

    Why do my 2-pin TV and HT systems give shocks on ports when ON together?

    Welcome to PF. What's a "2-pin TV and HT system"? There are two pins in what way? How do you get the shock? When you touch what or when you touch what two things? Can you say what country you are in? What do the AC Mains power cords and wall receptacles look like? Are they grounded?