Jump to content

Reaper

Senior Members
  • Content Count

    1152
  • Joined

  • Last visited

Community Reputation

90 Excellent

About Reaper

  • Rank
    Previously Lockheed
  1. Is there anybody here familiar with the philosophy of David Hume? I've been particularly interested in reading some of his works lately, especially with regards to his treatise on skepticism. In particular, his Natural History of Religion seems to lay the fundamental logical and moral framework for both agnosticism and atheism... Thanks!
  2. Yeah, ok so I realized very quickly that 750 problems a week would be physically impossible to do. I thus scaled it down to a more reasonable number. It will be more realistic goal, like 40 problems a week instead. This equates to about 6 problems per day on average. It will still be quite masochistic (at least at first, when it starts to become trivial I will seek out harder problems or increase the number of them), but at least it is possible and worthwhile.
  3. Hey! It's been a while since I've posted here. Anyways, I've been contemplating on how to create a "training" course, so to speak. It would be designed to help facilitate my learning of topics such as physics, as well as to become very proficient at them. Much like the way people train for physical sport, but instead applied to the mind. The reason I would consider it a "training course from hell" has largely to do with the fact that it is designed to be, well, hellish. Some ideas include: -Doing 750 physics problems a week, in order of increasing difficulty. One wrong answer mean
  4. Exactly. As counter-intuitive as that might seem, there is no reason that it can't behave (at least on a large scale) like any other object without an event horizon. Like Swansont said, gravity is gravity; it's influence depends only on it's mass. Did you even read through any of the articles that I presented to you? That statement is wrong on so many levels. The truth is, we don't really know what goes on black hole (although I can tell you what it is not, a wormhole). General relativity suggests that there should be a singularity at the center, but such objects only represent a fai
  5. I don't really think you are understanding what I'm saying. First, your nitpicking terms (it could be semi-fluid or super dense plasma, same difference. Though the word "frozen star" implies solid object....). Besides which, since black holes have no hair, we might as well just treat it as a solid object anyway. So what, exactly, a black hole is made of is irrelevant. And second, transfer of kinetic energy doesn't mean that things will "bounce off" the event horizon. It just means that when things collide, some of that energy will be transferred. A black hole is the same as any other
  6. Well, lets see. According to Berekely University: http://cosmology.berkeley.edu/Education/BHfaq.html How is what he is describing not a solid object? More generally, a black hole is the result of a giant star collapsing in on itself. The mass gets compacted into such a small space that the resulting escape velocity near it's surface is greater then that of the speed of light. Thus forming a "black hole" in a metaphorical sense. A much more accurate term is actually a "dark star", but the word black hole sounded so much cooler, so that's what we use. It is not a hole in any sens
  7. Oh yeah it does. Especially if we are considering one that is not that big and moving at extreme velocities. Or much bigger objects (Although with bigger/more massive objects, what would happen is that the matter would warp around the black hole, thereby tearing it apart...)
  8. That doesn't matter though. You are assuming that at black hole is some "hole" in space that just sucks everything up. A black hole is a solid object, like anything else. And like all objects in the universe, it has a speed, a mass, and momentum. Thus, it can carry and transfer energy to other objects, whether they are black holes or not. Just because it can "suck" in light doesn't mean that it can't collide like any other solid object. Any other action would be a violation of the laws of physics, and as far as I know, even black holes are bound by them. As well, black holes only have the
  9. Why? A black hole is just like any other object, except really, really dense. Conservation of momentum still applies; if it crashes into some object, at least some of its kinetic energy will be transferred into the planet. It's the same as shooting an asteroid or a neutron star into a planet at relativistic speeds (except that a black hole is much more massive, and thus has a great deal more kinetic energy at those speeds). If black hole that sized collided with our planet at that speed, the Earth would probably be vaporized. Merged post follows: Consecutive posts merged I k
  10. If it was very small, then yes. But I think the OP was referring to any sized black hole, not just very small (i.e. subatomic sized) ones.
  11. But if you make it impossible for intelligent AI's to turn against their creators, then I don't see what the problem is. Virtually every machine we have in existence has built in safety features to ensure that it is safe for humans, it follows that robots and super-intelligent AI's will have them too. For your fear to be not unfounded, you would first have to show that 1) The safety features can be overridden 2) That, if truly independent, that they would even want to turn against us ala Skynet or Cylons.
  12. It will depend on how big the black hole is. If it is moving at 99999999999c with respect to Earth, I wouldn't want to be in the way. Such an object would have an enormous kinetic energy, and if it crashed into our planet, even a small one would turn the crust into slag. A bigger one would just blow it apart (and probably ruin the entire solar system with it...), and a supermassive black hole would just gobble our planet up. I don't think we would have time to perceive it if such a black hole was headed our way. The only thing we would see is planets being flung right out of their orbits,
  13. Well, I'm actually a bit skeptical about intergalactic travel, simply because of the enormous distance between galaxies (the Andromeda galaxy, one of the closest galaxies to us, is more than 2 million light years away). Even if we just send unmanned probes or even Von-Neumann probes, I doubt they would remain functional for very long. To put it in perspective, we've already built probes that can last for decades. We could probably make space-craft that can remain functional for hundreds of years. It's pretty unlikely that we could design anything that can last more that a few thousan
  14. Nope, I'm afraid Issac Asimov would disagree with you: Source: "Caves of Steel", Introduction, pg. viii-x They were designed precisely to guard against some sort of Terminator scenario. Of course, he went further in later novels to talk about their implications and various loopholes. But in no instance did the robots ever waged a full scale genocidal war against all of humanity, nor did they kill human beings out of malice or rage; the robots did not have any such desires, and such actions were just simply impossible in any case. Issac Asimov reasoned that since intelligent machin
  15. Speaking of interstellar travel, there is an article out there that claims that it may be possible develop the ability to manufacture sufficient amounts of antimatter in a couple of decades: http://www.engr.psu.edu/antimatter/Papers/NASA_anti.pdf There is not too much math in it, other than basic algebra and simple formulas. And a couple of graphs. So, if you want to read it, then go ahead and enjoy. One thing I found interesting is that antimatter production does seem to be expanding exponentially, so who knows, maybe late in the 21st century we might be able to build a relativistic space
×
×
  • 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.