Jump to content

pzkpfw

Senior Members
 View Profile  See their activity

  • Posts

    747

  • Joined

  • Last visited

  • Days Won

    4

 Content Type 

Everything posted by pzkpfw

  1. pzkpfw
    Lack of proof there is a god of some kind, isn't proof that this god doesn't exist. There are also plenty of reasons why reasonable people find comfort in some kind of belief, including upbringing (indoctrination?) and nervousness at the unknown. Not that I'm agnostic, I personally go with "there is none", but I think it's a bit too strong to say "delusion". It did sell some books, though. (dimreepr, is the incorrect "you're" in your signature ironic?)
  2. pzkpfw
    No, because your math is gibberish. Yes. And you don't even need math to see it. You are missing the point. Top half of image: In the rest frame of the light clock (i.e. anything at rest with it: in the same train - in your unattributed image) the pulse of light is bouncing between A and B, travelling L back and forth. This is not about seeing the pulse of light, it's just doing what the pulse is doing. Bottom half of image: Considered from a different inertial frame, one where the train and the light clock are moving from left to right, the pulse of light makes a different path, travelling D back and forth. D is longer than L. But the speed of light was earlier shown to be invariant. For the same pulses of light to travel from A to B at the same speed, over different distances: it must be that time is relative.
  3. pzkpfw
    Where it would be, is non-flat space. Edit: snap
  4. pzkpfw
    Did they pay you, or did you pay them? Who reviewed it?
  5. pzkpfw
    (For what it's worth, in English I've only ever heard "nickname", not "nick". YMMV.)
  6. pzkpfw
    That's also how you ended your last thread on this topic. Nobody is disturbed. I remember many many years ago at school, sitting on the step of a building watching someone about 150m away bouncing a basketball on the footpath. Thanks to the brick wall of the building they were outside, I was also hearing the ball hit the concrete. They stopped bouncing the ball. And I heard one more bounce. Slightly jarring at first. The distance was such that (like watching a movie where they sync up visuals and sound and ignore reality) I was seeing and hearing the bounce at the "same time", but of course the sound of each bounce was getting to me later than the sight. None of this is new.
  7. pzkpfw
    Did the Universe exist before brains?
  8. pzkpfw
    I don't know about that, but if we treat 55 and 145 as lengths in metres, you could fit 450 average bananas between them.
  9. pzkpfw
    Do authors pay to be published by them?
  10. pzkpfw
    Web forums are more dangerous than the printed word, I'd say.
  11. pzkpfw
    Nothing that big would have stayed secret. https://en.wikipedia.org/wiki/Atomic_spies
  12. pzkpfw
    Can you use pipeclamps and bolts? Glue is pretty one-way. (Though drilling polycarbonate sheet for bolt holes can be tricky.)
  13. pzkpfw
    As a rule of thumb (i.e. close enough), you'd block Proxima Centauri from all viewers on Earth at the same time with a disk the diameter of Earth, if the disk is next to Earth, or the diameter of Proxima Centauri if the disk is next to that star. Anywhere in between would be a ratio. (Give or take a little gravitational lensing, and assuming everything stays still ... etc ...)
  14. pzkpfw
    Did you abandon your previous thread? I'm assuming (not "suing"!) you mean JavaScript not POstScript here, too. JavaScript has no sleep. The idea of blocking code in something built for the UI is an anathema. However, you can fake it. The following works. It wraps the setTimeout in a promise, then uses await to block on it. <html> <head><title>Not a great general purpose programming environment</title></head> <body> <script> ShowLine("You can't always get what you want."); function sleep(ms = 0) { return new Promise(resolve => setTimeout(resolve, ms)); } async function ShowLine(input) { for (let i = 0; i < input.length; i++) { await sleep(250); document.write(input[i]); }; } </script> </body> </html> It seems to me you're really needing something else to do your programming with. (But you don't provide much detail to work with.)
  15. pzkpfw
    setTimeout is async, i.e. it's non-blocking and will never work like this. The for loop would race ahead and make 100 setTimeouts all at once, then they'd all fire at more or less the same time, not 100 ms after each other. Also, Endy0816 is right that the null cannot be used. You do need to call a function, or have a string that evaluates to code, or use a lambda (arrow function). This works: <html> <head></head> <body> <p>Test:</p> <script> let i = 100; setTimeout(ShowDot, 100); function ShowDot() { document.write("."); if (i-- > 1) { setTimeout(ShowDot, 100); } } </script> </body> </html> If you want the first dot to show immediately, just replace the first: setTimeout(ShowDot, 100); With: ShowDot(); See: https://developer.mozilla.org/en-US/docs/Web/API/setTimeout
  16. pzkpfw
    Don't you already have a thread on this stuff over in Medical Science | Anatomy, Physiology and Neuroscience ?
  17. pzkpfw
    This sounds like homework.
  18. pzkpfw
    It's just sloppy language. From the point of view of a person anchored to the ground, another person might appear to lift in this scenario. But it's not lift, it's more that the ground is "falling away from" the un-anchored person, and they continue to move as they did.
  19. pzkpfw
    Just let it go. It doesn't matter.
  20. pzkpfw
    Occams' razor suggests that bigfoot isn't people wearing bigfoot costumes, it's bigfoot hiding by wearing black bear costumes.
  21. pzkpfw
    If new physics is required, how do you then answer the question in post #1 ?
  22. pzkpfw
    Pareidolia https://en.wikipedia.org/wiki/Pareidolia
  23. pzkpfw
    From this post, it looks like you don't actually know the big bang theory. It might be good to start with understanding current science, before deciding it's wrong.
  24. pzkpfw
    Mostly I really hate time travel in any show. I generally can excuse one or two bits of magic in something (e.g. faster than light travel is pretty much required to make most Science Fiction work), but the implications of time travel are just too much for me. Having said that, I recently watched Eureka. Pretty much all of the science in that show was just silly. But that then made it easier to accept the time travel episodes. It was all really just fantasy. And the interesting bit of the time travel was that they kept the "timeline changes" in the show. That is, around half way through the run they altered their present by something they changed in the past ... never reverted it. So some characters went on in the show knowing about the "other timeline" and others only knew one. It was like the show was rebooted, with some characters knowing about the reboot.
  25. pzkpfw
    I see we can add probability to the list of things you don't (can't?) understand.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.