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  1. S

    A Trapping the sun in a perfect insulator

    so fusion or solar dynamics isn't real science? Also you know sci fi means science fiction right? Sci fi is literally based on real science.
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    A Trapping the sun in a perfect insulator

    Its a magical barrier. It has no temperature. If it absorbed heat then it would be draining heat from the system, which therefore means it doesn't have heat capacity. All energy that strikes the magical barrier is reflected back to the direction it came from. Because the energy is reflected...
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    A Trapping the sun in a perfect insulator

    The physics are the same except that there is a magical barrier which prevents most energy from leaving the system. What if I said that instead of a magical barrier it was a small, closed bubble of space time where expansion was equal to gravity.
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    A Trapping the sun in a perfect insulator

    It means that no energy is lost from the system. I also specified that the perfect insulator "prevents anything from leaving". I also never said there is a material that exists with these properties. I'm not asking if its realistic. Read the op again please. I think you're confused. "One of...
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    A Trapping the sun in a perfect insulator

    A hypothetical is anything where you posulate an assumption to be true. But anyways say that 1 photon every million years is released so that entropy is non zero. But if fusion stops then that means the core isn't pushing outwards against the force of gravity. Then gravity causes the fusion to...
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    A Trapping the sun in a perfect insulator

    So this is kind of a crazy hypothetical, but what would happen if you surrounded the sun in an invulnerable, perfectly insulating sphere that prevents anything from leaving. I imagine that as the sun heats up, the rate of fusion increases and the life time of the sun decreases. But that's about...
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    B Can a black hole event horizon grow at the speed of light?

    I'm confused on how a null surface, where light falls into the black hole, is moving at all. This is like saying that a shadow is moving; a shadow is just the lack of light though and doesn't exist in any physical sense.
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    I Black hole orbits

    why did you decide to do this project in python?
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    A What are the implications of a new 750GEV particle to GUTs?

    What's the probability that this particle isn't a statistical fluke? Are there good odds that this is the real deal?
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    A What are the implications of a new 750GEV particle to GUTs?

    How would this particle imply other particles? If its a new particle that the standard model didn't predict, then how could you possibly know it implies anything at all? Why couldn't it just be one particle on its own?
  11. S

    Lines of code and speed?

    What did I say that was inconsistent with that? I already explained that.
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    Lines of code and speed?

    I didn't say it had to do with code optimization. All I was suggesting was the lines of code does, in fact, have an impact on performance and speed (in web development), which is what the topic is. The topic isn't necessarily about making the code execute more efficiently based on the title.
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    Need an explanation of sliding window for networking

    So I have a school project that requires me to use a sliding window in order to transmit a file to a server, but I'm having trouble understanding how sliding window works. I don't really understand how rejects are done and how the program knows to send a new packet and then move onto the next...
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    Lines of code and speed?

    In web programming your code gets minified, which means all the superfluous junk and formatting is erased. This gives performance advantages and lowers the amount of bandwidth required to transfer the web code to the user.
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    B What would a supernova sound like?

    I obviously realize that sound requires a medium to go through. However, suppose that there was a supernova and it was magically surrounded by an atmosphere that has the same composition and density as earth's atmosphere. Now, if you were far enough away so you didn't get wiped out, then what...
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    Naive Question about Dark Matter

    I doubt its that general relativity needs to be modified. Cosmologists and astrophysicsts have shown that the distribution of dark matter isn't even, and you would expect the effect of dark matter to be directly proportional to the galaxy's mass if it was a problem with general relativity...
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    Theoretical meson beam weapon

    There's this game called sword of the stars and one of the most interesting weapons is the meson beam. Essentially what happens is that mesons are generated and accelerated close to the speed of light so that they decay once they're inside an enemy ship, thus bypassing all defenses and creating...
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    How much could the Earth's rotation speed up?

    I've noticed there are a lot of documentaries and youtube videos about what would happen if the Earth stopped spinning. However, I would like to know what would happen if the Earth kept speeding up, what would happen if it did, and the approximate maximum rotational velocity before the Earth...
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    Falling into a black hole and time dilation

    So for an outside observer it appears someone falling into is slowing down and then gets redder and redder. But what about for the local observer? From the perspective of the person falling I would imagine that the universe would appear to speed up tremendously. Is it possible you could survive...
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    B Can a Black hole also be a wormhole?

    In theory you would see the universe speeding up if you were falling into a black hole since for your frame of reference the universe would appear to experience time more quickly. Its possible you would see the entire duration of the universe pass before your eyes, and it would becoming...
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    Why is NASA and curiosity still looking for water evidence?

    But why wasn't the primary objective to find life? I mean I would trade all the evidence of past water and all of the dirt analyses and all of the atmospheric tests for just one clearcut example that life was on mars. Minerology is laughably insignificant compared to the search for extra...
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    Why is NASA and curiosity still looking for water evidence?

    I think it might be worth it to try rather than confirming for the umpteenth time that "ZOMG WATER WAS ON MARS". I don't understand why we need to confirm that there was water when the evidence is basically undeniable. Its worth the effort to sample the actual content of water and perhaps see...
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    Why is NASA and curiosity still looking for water evidence?

    Thanks for your reply. Don't we already know how when and where water existed on mars? And don't we already know the soil composition since the days of the 1970s? I thought the viking lander figured out a good chunk of stuff in the 70's. Then i'm pretty sure the two rovers before curiosity found...
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    Why is NASA and curiosity still looking for water evidence?

    They had a satellite which saw water streaks on the surface. If they could some how use curiosity to intercept those streaks and investigate the liquid composition then that sounds more useful than re confirming that water is and has been on mars.
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    Why is NASA and curiosity still looking for water evidence?

    Look for life of course. Or focus on a europa mission, or focus on sending a probe to investigate titan's methane lakes, or check our enceladus' under water ocean, etc, etc. I mean I can think of an infinite number of superior missions. We already know there was water on mars approximately up to...
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    Why is NASA and curiosity still looking for water evidence?

    there's an entire branch of philosophy devoted towards that question but the limestone deposits, the silicates, and the dried up rivers, deltas, canyons, etc are all conclusive enough in my submission. I might ask you though how much evidence is needed to constitute proof for gravity? Or do we...
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    Why is NASA and curiosity still looking for water evidence?

    So I always see in the news that the curiosity rover or some nasa study of previous data discovered evidence of water like its actually news. Wasn't it shown a decade ago that there is conclusive evidence that lots of water existed on mars? I don't get why they're still spending so much time...
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    Confused about black holes and Hawking radiation

    Thanks, but black holes don't really have a temperature right, and doesn't this black body equation only relate to a regular object that emits light? The black hole itself might have temperature but the event horizon is not a black body in the traditional sense because its a boundary where the...
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    How can I deal with such an integral?

    If you're only dealing with the relationship between x and y as specified by dy and dx, then Z is just a constant i would image. Its like when you integrate and you get the + c constant added, but that C variable isn't one of the relationships in the equations. so if you integrate z*dx then...
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    Confused about black holes and Hawking radiation

    Why is it that the smaller the black hole is, the more quickly it supposedly evaporates? It seems like a black hole should radiate energy proportional to the surface area of the event horizon. To me it seems like the evaporation should slow down the more the black hole shrinks because the energy...
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