Recent content by jedishrfu

  1. jedishrfu

    History Underwater Acoustics: Brief Historical Overview Through WWII

    There is one story in there about a Russian sub and American sub grazing one another. Somehow the Russian sub lost its propeller stuck in the sail of the American sub. The American sub waited around hoping the Russians would surface for a rescue but they never did. The American captain felt...
  2. jedishrfu

    History Underwater Acoustics: Brief Historical Overview Through WWII

    There's a great book on this called Blind Man's Bluff: https://en.wikipedia.org/wiki/Blind_Man%27s_Bluff:_The_Untold_Story_of_American_Submarine_Espionage
  3. jedishrfu

    High School Which technique has been used? (drowning victim recovery in a lake)

    One thing not mentioned here is that sonar and side-scan sonar operate on very different frequencies. High-frequency side-scan sonar (HFSS) operates at 900kHz to 1600kHz. HFSS produces near-photographic images of the lake floor, clearly resolving body outlines separate from rocks. It detects...
  4. jedishrfu

    Undergrad One does not “prove” the basic principles of Quantum Mechanics

    I guess I'm late to the party. I struggled with this as an undergrad until I read somewhere that there is no connection between math and physics. We intrinsically use our math, define some axioms, and apply them to a problem. When difficulties arise, we adjust our math to cover them. When the...
  5. jedishrfu

    High School Two interesting number theory tricks

    I liked a card trick that the YouTube channel Scam Nation streamed. The host is a magician, and a friend stopped by to show the host a new card trick. The host was blown away by it and asked how he did it because, as a magician, he couldn't figure it out. The trick was the trick didn't...
  6. jedishrfu

    PF is a different place with higher moderation than most websites. We are passionate about...

    PF is a different place with higher moderation than most websites. We are passionate about mainstream STEM topics and enjoy discussing papers, provided they have been published in reputable journals. Bottom line: review our site's global guidelines and avoid personal theories, speculation, and...
  7. jedishrfu

    Trail - vscode extension for research projects

    Be careful about discussing your ideas here if you plan to commercialize them as it can torpedo any patents you might file since it was discussed beforehand online. Also any ideas you gather must be carefully considered as you likely will bake them into your ideas. There is an episode on This...
  8. jedishrfu

    For those who ask: "What programming language should I learn?"

    For zeroMQ having zig wrapper the calls is okay but for CUDA I'm not sure what you’d be missing using the zig approaches. Fun times to look at what can be done.
  9. jedishrfu

    For those who ask: "What programming language should I learn?"

    My first few experiments with zig were impressive but apparently there is still API churn in the versions released since it is at the 0.15.2 version. The churn caused some confusion and issues to be debugged. Not as smooth as learning C.
  10. jedishrfu

    For those who ask: "What programming language should I learn?"

    Yes, there are other Unix tools, and that's why I ditched them: they could all be replicated in AWK with minimal effort. The Zig benchmark is just incredible. Dave didn't really get into why that was the case though but I suspect it was the compile-time functions prepping the way. For his...
  11. jedishrfu

    Trail - vscode extension for research projects

    This is an interesting idea. I recently completed a small project for grad studies and didn't worry about naming until I took a break for a few days, came back and couldn't decide which program was my latest version. At work, this wouldn't have been an issue since I would've checked my code...
  12. jedishrfu

    For those who ask: "What programming language should I learn?"

    Many years ago, while programming under PC DOS, I wanted a Unix-style environment and found a company that made DOS-based Unix tools, Thompson Automation. They had a kit of the most valuable tools and another featuring AWK. I got both, not knowing anything about AWK. For me, it was a...
  13. jedishrfu

    hi

    Welcome to PF! Please take some time to read our site global guidelines as we are a highly moderated site. (see link in my signature below) Jedi
  14. jedishrfu

    Bill Murphy

    Welcome to PF! What have you learned so far about Quantum Computing? There's a lot of hype going around. The latest significant news I heard was that Nvidia has partnered with a QC startup. The news sent shockwaves through the industry, and several well-known QC ventures suffered a serious dip...
  15. jedishrfu

    For those who ask: "What programming language should I learn?"

    I'm always interested in new programming languages, and Zig looks pretty interesting. I've traveled a similar path from FORTRAN IV to later fortrans, to C then C++ then doing C++ with SOM for DOS and OS/2. Taligent C++ frameworks. Then took a java track for the past 25 years. My most recent...