What's the highest compression ratio that I could get out of a plastic compressor? I want to 3D print a centrifugal one. I intend to put this value into pic related in order to find out what flow rate I can get from a given power input. My book said centrifuges compress air isentropically so I worked with that.
>>7638001 >isentropic efficiency Tell me more, my book says nothing about this. > figuring shit out empirically. Of course I'll take readings from the finished product but I need to know if it's feasible first before building anything. 3D printing filament is actually quite expensive, ball bearings even more so. Just need a rough idea
If black holes are such a cluster fuck of what the fuck, why doesnt it just consume the universe all at once given it's "properties"?
Is it possible black holes arent actually "holes" just extremely dim balls with extremely dense mass and high gravity? maybe rather than it consuming anything it's simply just destroying/ripping apart particles that get sucked near it?
>>7637933 >>7637933 Matter cannot be created nor destroyed by a physical or chemical reaction.
Don't you think the entire world community of astrophysicists who devote their entire lives into studying things like this would have already thought of this? The existing definition for black holes is backed by countless hours of research.
What you just proposed a black hole "might be" is pop science bullshit you literally made up in maybe 5 minutes. Fuckoff... Comment too long. Click here to view the full text.
>>7637933 >why doesnt it just consume the universe all at once given it's "properties"? You can do better than that. First give us your explanation for why something having counter-intuitive properties instantly destroys the universe.
>>7637809 An extremely complex, text based with some visual graphics, diplomacy/political climate simulator. You start off as one country, could be our world, could also be a randomly generated one to keep things interesting, but that increases the overall complexity by huge margins, so stay on Earth for now. I guess your goal is to become the richest and most powerful country or something.
Good intentions, retarded execution. Yes we should teach kids to think and abstract with maths, not only crunch numbers. But teaching kids to abstract arithmetic ina different way is fucking retarded when the problem is with the curriculum itself.
Stop with this pragmatic obsession of mathematics and start showing what mathematicians actually do. Make mathematics an enjoyable and engaging class with basic proofs, challenges, interesting theorems and a constructivist approach to math. Literally start with the Greeks and go building many subjects until calculus.
and let's say that I'm 'blinded'--meaning that I can't explicitly take any two values and perform anything other than an equality comparison (this means that I can't compute piece-wise or branching functions, nor can I explicitly check for x > y).
If somebody gives me three example points a, b, c, is there any way I can determine whether my system is satisfied? I had originally thought to attempt to derive a single system of equalities... Comment too long. Click here to view the full text.
Sure, you can find a lot of counterarguments, but this is the only thing that makes sense. Questions like "What are electrons made of? What is bigger than the universe?" can be answered by that. Everything kind of loops on itself, the world is a recursion. Our universe is a substance on someone else's planet which is an electron inside a substance and so on. Yes, I do know about electronic orbitals and how electrons don't just spin around the core, but if we start researching it, we would probably find and explanation.
> how hard is it to get a in research once you've got your PhD? It's trivial. You've already been collaborating with some people in your field by then, and the whole point of doing a PhD is to prepare you to do research independently. You'll have friends in your field or similar enough fields, you'll be invited to conferences to meet people, and so on.
Most people carry on with some aspect of their PhD work that they didn't get to do while they were finishing their thesis. Typically, you'll have a dozen... Comment too long. Click here to view the full text.
>undergrad in math grad class >doing homework >submit correct proof >grader is a PhD student >get points off for referencing a theorem in our textbook instead of proving the case yourself >get points off for assuming things proven in undergrad analysis instead of proving them all over again
At this point I'm going to get a B... Comment too long. Click here to view the full text.
1st year University student here. Thinking of changing my Course from Biochemistry to Zoology. It is something I'm much more interested in, and the majority of my classes this semester have been the same so transferring would be simple.
Was wondering how screwed I would be in the long run with such a specialised degree compared to Biochemistry. Are jobs in that field just non-existant? Has anyone any experience in the field?
Physical science isn't about examining reality. Reality is beyond our grasp. It exists, but we perceive it with imprecision. Since what most people call reality (the physical space we see around us) is in fact an image of reality within our brain, by examining it we're not examining reality but only our perception of it. In other words, physical science is about exploring interaction of human brain (which is capable of self reference) with other physical objects.
All trademarks and copyrights on this page are owned by their respective parties. Images uploaded are the responsibility of the Poster. Comments are owned by the Poster.
This is a 4chan archive - all of the content originated from them. If you need IP information for a Poster - you need to contact them. This website shows only archived content.
If a post contains personal/copyrighted/illegal content you can contact me at firstname.lastname@example.org with that post and thread number and it will be removed as soon as possible.