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11-13-2015, 09:01 PM | #31 | |
BOTTLEG ILLEGAL
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11-13-2015, 10:07 PM | #32 | ||
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Also, I assume you'll be looking at brain chemistry? I was never good at biology on the micro scale. Things like neurochemicals and synapses, I could never make sense of. |
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11-13-2015, 10:39 PM | #33 |
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Yes, I'm assuming the bio basis of behavior will be a lot about neurotransmission in brain synapses. I already have a grip on some of the chemicals so that should help me. Plus we went over some basics about synapses in anatomy 1 as well as the macro anatomy of the brain itself
As for the biological/evolutionary bases of psychological adaptation, I'm not sure what to expect of the course. I'm assuming some very basics like why humans get together in groups etc, but also stuff like the evolutionary aspects of higher level emotional-type behaviors, like sentimentality for instance, and what psychological advantages it brings to the species not exactly sure though, could go in a lot of directions |
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11-15-2015, 02:25 PM | #34 |
Just Hook it to My Veins!
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hey DATS WHAT SHE SED!!!!!
lolol |
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11-20-2015, 12:04 PM | #35 |
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Just learned that the sunlight we see today was cooked 30,000 years ago. That's how long it takes to get from the core where it's made to the surface...then only 8 minutes to Earth.
Not a planet, but still! Fuckn wow!!! |
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11-20-2015, 05:32 PM | #36 |
Just Hook it to My Veins!
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that's really fascinating, why does the energy take so long to make it to the surface of the sun? I knew the bit about the sun being 8 light minutes from Earth. So the sun turns hydrogen to helium at its core and then it takes 30,000 years for the energy from that process to crawl out to space?
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11-21-2015, 02:12 AM | #37 |
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11-21-2015, 12:48 PM | #38 |
Minion of Satan
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i always liked stars more than planets myself.
Pure energy. The closest thing to a god in this universe. It's awe inspiring to consider. I especially like white dwarfs. All this compacted mass. Some white dwarfs are the size of a planet and yet much heavier than our sun. This is Ik pegasi B at the bottom of this pic. This is our sun to the right (the one the left is IK pegasi A) that small thing at the bottom is 1.15 times the weight of our sun. Also, consider this tidbit of trivia: "Over a very long time, a white dwarf will cool to temperatures at which it will no longer emit significant heat or light, and it will become a cold black dwarf. However, the length of time it takes for a white dwarf to reach this state is calculated to be longer than the current age of the universe (approximately 13.8 billion years), and since no white dwarf can be older than the age of the universe, it is thought that no black dwarfs yet exist. The oldest white dwarfs still radiate at temperatures of a few thousand kelvins." And then you've got supernovas. A supernova happening even at 3000 light years away would be close enough to affect our atmosphere and deplete the ozone layer enough to expose us to unhealthy amounts of solar radiation. It has been theorized this happened before and caused some extinctions of species. At something like less than 30 lights years it would pretty much kill us by destroying most of the ozone layer. IK Pegasi B, seen in the above picture, is actually the closest currently known star (150 light years away) with the potential to go supernova. Though this is many millions of yeas away. Whenever i consider these things i tend to get moved. Perhaps in the way one would look at a god if they existed. It makes me feel so small and yet so amazed that such power exists. We spend this absolutely insignificantly minuscule amount of time we are allowed to move our atoms about, affecting the universe at such a hypermicroscopic scale while out there there's movements of energy that can wipe the life out of entire star systems And then there's black holes...... |
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11-21-2015, 12:48 PM | #39 |
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11-21-2015, 03:29 PM | #40 |
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the craziest thing of all is that there is no fundamental difference between stars and planets, they are both just big clumps of matter held together by gravity. one just happens to have enough mass to start nuclear fusion.
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11-21-2015, 03:35 PM | #41 |
Minion of Satan
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in essence there is not much different between anything in the universe.. clumps of matter.
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11-21-2015, 04:39 PM | #42 | |
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Time for my very own "I'm done" thread, hope to see you all there... |
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11-21-2015, 04:42 PM | #43 | |
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11-22-2015, 02:35 AM | #44 |
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This thread gives me anxiety. I have a space phobia. I often have nightmares about getting lost in space. I get sweaty palms and increased heart rate watching space movies but I do it to try to break the phobia
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11-22-2015, 02:37 AM | #45 |
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11-22-2015, 03:02 AM | #46 |
Just Hook it to My Veins!
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just think of all the crazy shit in space we don't even have any conception of yet.
I read an article a hot minute ago about a hypothesis that the universe is a projection from a 4 dimensional black hole. |
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11-22-2015, 04:33 AM | #47 |
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I know there was some kind of theory of the universe actually being some kind of 2D hologram but I believe it got disproven. It was an interesting theory because it sorta allowed for some kind of "other world" like, heaven or hell or insert whatever here. Though this is just what I remember and it might be totally wrong.
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11-22-2015, 04:36 AM | #48 |
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nevermind, according to wiki it's still open as a possibility https://en.wikipedia.org/wiki/Holographic_principle
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11-22-2015, 04:31 PM | #49 | ||
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I recently came across information that totally fucked with everything I thought I knew about black holes. I envisioned them as an infinitely-dense point in space so massive, its escape velocity would be equal to or greater than the speed of light, meaning anything that goes into its event horizon would get sucked in. Then I read that black holes aren't necessarily "infinitely-dense." The larger they are, the less dense they are, so some of the larger ones are around the density of water. But I guess that's if they calculate its density as its mass divided by the volume within the event horizon. If we're just talking about the "singularity," well, that word is just apparently used to describe the fact that relativistic equations break down, and we can't use them to predict anything. So, we use "singularity" to mean "we don't have a fucking clue." Another thing that's been bothering me recently about black holes: so, from the perspective of anyone outside the black hole, it should take an infinite amount of time for anything to fall in. So, we would only see things hovering just outside the event horizon, but never falling in. If we can never observe any mass go inside a black hole, from out perspective, how can we detect black holes at all? I mean, we can only indirectly detect them anyway through gravitational effects on other bodies and quasars and stuff, but why should we see things that indicate black holes, when it is impossible from out perspective for any mass to fall within the Schwarzschild radius in the first place? Mass has to fall in for the black hole to be a black hole, making the question of whether things can fall into a black hole that already exists seem to be moot. I mean, the only response I can think of is that anything just on the edge of the event horizon will be red-shifted so much that it would become invisible, anyway. So, to us, we wouldn't be able to tell the difference between a body with it's mass inside the event horizon, and a body with all its mass just outside of it. It would interact with other bodies in the same way. So everything we call a "black hole" is really just a body functionally equivalent to a black hole for our purposes. I have no idea if I'm right or not, though. |
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11-22-2015, 07:22 PM | #50 |
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I didn't realize it would appear as if nothing ever entered a black hole, I thought it would just take millions of years for a black hole to say swallow a star.
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11-22-2015, 08:43 PM | #51 |
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Don't we detect them basically by the pull they have
And you would not be able to observe something going into a black hole for the same reason you can't observe a black hole at all |
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11-22-2015, 08:57 PM | #52 | |
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I'm not really sure, but I always thought that you would be able to see matter entering a black hole, all ripped apart and stretched over huge amounts of space. I've also heard that black holes may emit beams of visible energy. |
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11-22-2015, 08:59 PM | #53 |
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Doing a google search tells me that gasses are swirled around the hole so fast that they emit X-rays that, unlike light, we can still see
The most obvious way to see them though really is just by looking at the stars that are physically positioned in a swirl around an invisible point Last edited by Elphenor : 11-22-2015 at 09:05 PM. |
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11-22-2015, 09:05 PM | #54 |
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Right, I meant like if you were actually up close and personal with one and not an inconceivable distance away. Obviously it's all theory since probably no one will ever see one IRL.
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11-22-2015, 09:12 PM | #55 |
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Oh, I see
Yeah I have no real idea, but I think that's just how it's illustrated for understanding and that you wouldn't see anything like that even if you could be right there Because that's how it usually is |
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11-22-2015, 09:19 PM | #56 |
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I don't know why you wouldn't be able to see matter get pulled in though, until it actually passes the rubicon where light cannot escape, where the matter should just disappear I think? Except for those x-rays, which I guess are not visible to the human eye but could be detected.
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11-22-2015, 09:27 PM | #57 |
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you know I'm always disappointed in how limited science fictional visions of the universe seem to be compared to the mind-bending nature of actual astrophysics and quantum physics and astronomy. There is so much crazy shit in the universe, but it seems all science fiction stories just jump to this place where all the science and mystery is like so passé, and the only thing left to talk about is human drama and evil super weapons
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11-22-2015, 09:35 PM | #58 |
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That's fiction for you, I'm hardly ever interested in it anymore
It's true for like history as well, things that have happened in the past are actually infinitely crazier than anything the human imagination can come up with |
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11-22-2015, 09:39 PM | #59 |
Braindead
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The density of black holes thing is indeed nuts I can't comprehend it, google can not explain it to me
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11-22-2015, 09:54 PM | #60 |
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yeah, there are a near-infinite number of nutty stories from history that would could translate into amazing works of fiction, but our interests focus on the same few events over and over and over and over and over. Let's make ANOTHER WWII FILM!!!!
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