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Posts posted by Gilded

  1. Take a look at the first two firecrackers in this movie. Both tubes are the same size and filled by the same amount of blackpowder (red) and flash powder (blue) and you'll see/hear the difference in report.




    Aaagh, cellphone camera videos! The goggles, they do nothing! The sound quality isn't exactly awesome either. Also, nice necromancy, seeing how this thread had been dead for over four years


    Somewhat related,

    filmed with a digital photo/video camera. The "intense bass" of the report is more apparent, imo. And that's just perchlorate and aluminum, rather than nitrate + Mg.

  2. I like the fact that in those dense articles one can often find this notice at the top:


    "This article may be too technical for most readers to understand, and needs attention from an expert on its subject. Please expand it to make it accessible to non-experts, without removing the technical details."


    It's a very visible indicator of the "denseness", encouraging further edits, rather than just something hidden in the article history.

  3. Relativity "works" always. Actually, effects of relativity are especially evident at small scales, particles' lifetimes affected by their extreme velocities and so forth.

  4. Very little English spam lately, but I keep getting tons of mail in languages I'm not the least bit fluent in. There's no fun in spam if you can't tell what they're trying to use as an excuse to give them money or download a virus or two. :|


    For example "Josh Woodcock" is trying to tell me something very important, but my Turkish is a bit rusty.

  5. to extend into this thread; is it possible to make a gas so that it's dense enough to be able to slow human fall through it, something like swimming in the water but swimming in the gas instead, just like the boat on sulfur hexafluoride? I can imagine that being very hard and my guess would be a no, but that's why I'm asking..


    Seems like tungsten hexafluoride is pretty much as dense as a gas can be at STP, and it has a density of 13.1g/L vs. water's ~1kg/L. While an object will fall much slower through such a gas than it would through air the density would have to be dozens of times higher for swimming.

  6. There is no center of the universe in the same sense as there is a center of a conventional explosion. Current evidence indicates that space itself is expanding, much like a balloon's surface expands when it is inflated, sort of dragging matter with it, which makes it possible for the universe to have a diameter greater than 27.4 billion light years.


    Edit: Severian's link covers the more technical aspects of this.

  7. thats the ONLY reason i go to the mall. not entirely sure what else there is to do there. the only other use i can think of is as an impromptu fortress when the zombie uprising happens.


    Especially around the holidays there's lots to do at the mall. Like tackling the mall pianist and playing the Star Wars Cantina Band theme on the piano until security comes to drag you away.

  8. Too... many... games. While a huge game rush just before the holiday season is nothing new, this year amazingly many of the games are actually good. I'm looking forward to the PC release of Mirror's Edge, but I'm guessing it won't be any time soon.

  9. Chemistry was pretty much always my strongest subject in school, but eventually I decided that it wasn't going to be a career for me, at least not on an academic level. I like music as well, but the actual studies would probably be too mechanical for me. Starting a career in something can take a lot of fun and freedom out of it, so you should really think it over carefully. I don't want to sound too materialistic but one thing to consider is whether you can make a living out of it. But I agree it's OK to study something just for the sake of getting better at it or learning more about it in general, before deciding whether to go for a related career.

  10. UTFSE is an acronym. It is crucial to remember that there is a search option. While the indicator for said search field is quite small (much smaller than a football field, depending on your monitor resolution of course), not using it can cause unnecessary threads.


    In other words, I think we have like over nine thousand threads about this.

  11. The newest Simpsons episode's intro was hilarious. :D

    "Six votes for President McCain."

    "Hey, I only meant one of those votes for McCain... this machine is rigged!"


    Anyway, the statistics support Obama's victory to such an extent that should he lose some people are likely to expel blocks of masonry-related ceramic material from their rectal cavities, so to speak.

  12. I'm not a particle physisist, but I think I see the answer.


    The Idea of anti-matter is reliant on the concept of matter, i.e matter and particles thereof are massive; they have mass.

    As I understand it, a photon is mass-less, therefore the idea of an anti-photon is unintelegable.


    Antimatter is just an extension of sorts, from antiparticles, so that's not a very good reasoning.

  13. IIRC the diamagnetism goes away on melting so it's to do with the odd crystal structure,


    You're probably confusing it with the Curie temperature, at which a material's ferromagnetism fades (beyond the Curie point the material is just paramagnetic). I'm not sure if it affects diamagnetism.


    On diamagnetism, it is affected by the material's structure to some extent. For example diamond is more diamagnetic than normal, randomly oriented graphite, where as pyrolytic graphite is more diamagnetic than diamond.

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