Senior Members
  • Content count

  • Joined

  • Last visited

Community Reputation

182 Excellent

About pzkpfw

  • Rank

Profile Information

  • Gender
  • Location
    New Zealand
  • College Major/Degree
    B.Sc. Computing
  • Favorite Area of Science
  • Biography
    Born, grew, living, working.
  • Occupation
    Self employed programmer.

Recent Profile Visitors

5871 profile views
  1. Cross posting is considered rude/spamming in most forums.
  2. I have difficulties understanding relativity

    It's not really about the clock. It doesn't matter if the clock is a wind-up wristwatch, a battery operated quartz crystal controlled digital watch, a sand-filled egg timer, the beating of someone's heart, or the regular drip of water out of a small hole. It doesn't matter how the clock works, as long as the clock measures time, and time is affected, the clock is affected (from the point of view of some observer moving relative to that clock, or at some other gravitational potential).
  3. Taiwan Earthquake

    Can even be directional: http://www.ancient-origins.net/ancient-technology/incredible-earthquake-detector-invented-nearly-2000-years-ago-001377
  4. Small nitpick: first-line indents

    Personally I hate indenting (first lines of paragraphs) and just stick a blank link (or depending on line spacing used, half a line) between paragraphs. Does your institution/supervisor have a style guide? I recall pages and pages of instruction on citation formatting, do they say nothing about the text itself?
  5. That science is about proving things. That science doesn't know everything about something, so any idea about that something has equal weight. The misuse of "theory" (as in "Evolution is only a ...").
  6. why lepton?

    Like most forums, you get an automatically assigned group or type name. The exact names depend on the forum, these are sciency ones. It'll change as you make more posts; look at different people, their post count and their title. Never to be taken seriously. (Unless it says "moderator" or "administrator").
  7. 3 Choices, pick one:

    I was thinking not just how we'd screw it all up again afterwards, but how these hypothetical aliens dealt with the issues of now. As in, would they kill 50% of us, and force the survivors to live a pre-industrial agrarian life. Would we choose option 1 then?
  8. 3 Choices, pick one:

    Exactly how would 1 be accomplished? That would affect whether it's a good choice.
  9. Original Solution to the “Liars Paradox”

    I think the OP misses the point. In day to day English I might say "I am seven feet tall, well, actually, I am lying". Clearly the bit I'm saying is a lie, is the "7 feet tall", bit, and saying that I'm lying is not itself intended to be a lie. But as a logic exercise, thinking about what "I am lying" - by itself, and referring to itself - really means, is a very different thing.
  10. What color is the sky on Mars?

    Wikipedia has a bunch of stuff: https://en.wikipedia.org/wiki/Mars#Climate
  11. Is the past infinite?

    You should watch "The last tango in Paris" (And do that course in logic.)
  12. Aperture and Field of View

    It's not about "defending", it's about "discussion". Nobody wants your apologies, we want to understand why you think what you do, and help you. You wrote: 4) extra light off. Lasers on. Only three beams go through diaphragms 5) five bright spots visible from screen Nobody here understands how you get step 5 after 4. It's very simple, all you need to do is draw a diagram showing how you can see all five spots in step 5. What path is the light following? (Move the discussion along, instead of getting upset and defensive.) Your earlier diagram is a good start.
  13. Aperture and Field of View

    There is no discussion if you can't explain (or diagram, or whatever) why you think your result would occur. Why would you see all five spots? (If you think that your step 5 would show 5 spots, given your step 4; it should be possible for you to draw a diagram showing the path you think the light is taking. Does the light do a loop-de-loop? A figure 8? How do you see all five spots when, given your step 4, two of the beams were blocked?)
  14. Aperture and Field of View

    Step 5 (of your latest set) is still wrong.
  15. Aperture and Field of View

    Step 5 - wrong. How do you get the five bright spots if 2 of the beams are blocked?