Assume you're talking about a BS/BA in science. Does the science degree go to grad school, then do a post-doc, then stay in academia? Does the science degree go to industry after undergrad? After grad school? Does the science degree stay in R&D, or move to the business side?
Do what I do. Look up the math/physics dept on a random college's website, pick a likely email address from the staff directory and tell them you're a student in one of their classes and you're curious about _____.
Helps to cross reference with the course catalog, so you can see what classes they're teaching and lie more effectively. All that info is usually public.
Can someone explain me just how much Bacteria is there in our environment and when exactly does it get harmful and just what harm can it cause? Some example scenarios:
You take your laptop with you in college. There you put it on the tables that are used by many people. Let's say you let a guy type on it who didn't wash his hands after the toilet. At home you take that laptop in your bed and after using it you don't wash your hands and continue to touch things inside your house. What can happen?
Or if you use the keyboard in the college library that probably hasn't been washed in a long time. And then with the same hands eat a sandwich.
Or you drink a soda that you bought in a store straight from the can.
Or you step over dried bird crap that didn't stick and then take those shoes inside home.
Or you have a dog that jumps around the house and your furniture.
Or you touch the faucet in a public toilet. Isn't that full with bacteria?
And just what would happen if you sat down with you bare ass in a public toilet?
And what if despite shaking your dingus the last drop ends in your pants?
What can happen if you eat food at a cheap place that doesn't respect hygiene too much?
>>8094212 You could attain a stronger immune system, or get a cold or things of that nature if you're unlucky. Basically unless the news headlines says 'SARS' , 'Ebola' or similar nothing very bad will happen as a result.
You are surrounded by bacteria literally every moment of your life. Countless bacteria are living and reproducing in your gut right now. Passive exposure to bacteria is generally beneficial, and is considered essential to the development of your immune system as a child. Bacteria are only bad when the wrong kind get inside you and reproduce without control. For example, the Staphylococcus bacteria that causes deadly staph infections, lives natively on your skin. It's always there. It only can kill you if it gets past your skin. Tl;dr, bacteria is everywhere.... Comment too long. Click here to view the full text.
What is the logic behind pic related? I'm sure there is a reason for it, but I was never taught it and its always bothered me.
For example, whenever I do the quad formula if -4ac turns out possessive (and following the Order of operations exponents, multiply, add/subtract) I always end up with something looking like 17 153, and multiply instead of adding.
Can anyone explain why we are taught to write like this?
>>8094080 I just took a look at Lee. i think we aren't studying it so deep. We started with parametric curves in R^2 and R^3 (Tangent, Normal, binormal base). Then we got to elementary parametric surfaces with geodesic curves, first and second fundamental forms, asymptotic lines. I need something like that for further reading
So im reading up on chaos stuff right now but I have a few questions.
So essentially there is chaos (deterministic) and real randomness. Chaos is almost everything we declare as random (rolling a dice for example) while real randomness is essentially really rare, for example in radioactive half-life.
Are there any other examples of actual randomness?
So what I had gathered is that maths was for the most part discovered, meaning that it would exist regardless of what we do. But does all forms of math fit this? For example: are matrices something that were discovered or something that is governed by man made rules?
>>8093701 Philosophy is just structuring and formalizing in natural languages.
mathematics are about formalizations of your speculations (which you form from your desire to see things that you experience [the empirical world, once you chose to objectify what you feel] through induction, as similar or dissimilar) to the point that you have a structure more formalized than your speculations structured in natural languages.
Logic is just a the formalization of your speculations about *validity of inferences*, so... Comment too long. Click here to view the full text.
A lot of math, historically, came from "standard" (ie. euclidean) geometry. So thats mostly discovery, because you can draw pictures and see how things work out. (Our real world is approx. Euclidean 3d space)
However, once a certain formalism is established (like Cartesian coordinates, defining algebraic equations for plane curves, or axioms for deriving all known properties of geometry), one can twiddle around with that and invent new things.
Probably the most trivial example would be Euclidean 4d space, or more interesting, alternative axioms... Comment too long. Click here to view the full text.
>>8093425 Standard gravity is inferred directly from the density of the earth at given points. This isn't the 19th century any more senpai, we don't use pendula to measure g. So if you were to drop a particle it would undergo an accelerating less than g because of the coriolis force.
>>8093459 >>8093461 Also, the percentage would be pretty small, considering the force of gravity is dependent on the mass of the Earth, while the centripetal force is dependent on your mass (or whatever you're measuring) which will be quite a lot smaller than Earth.
>>8093364 It has an abismal passing percent, only 30% get a 3 or higher. I took it and it was very hard but very informative. Take it with no expectation to get college credits but just to learn. I'd recommend it.
You can in fact define your own sets of mathematical rules across a space you define, and this is often done in fields such as modeling. However, such systems will either be a subset of an overall vector space, or will be inconsistent.
(Took linear algebra 101 eight years ago so I know what I'm talking about)
I was mulling over some GR equations, when something hit me. We often say in physics that certain things can't be possible because they would violate causality, but just how well-founded is the invocation of causality to constrain a physical theory anyway?
Starting from classical physics, [math]F = ma[/math] really doesn't say anything, except to provide a meaning to the word "force", until we start attaching the implication that a force *causes* a mass to accelerate. Otherwise it, and everything else in Newtonian physics, is just a bunch of acausal... Comment too long. Click here to view the full text.
While Newtonian gravity expressed the interaction of bodies in a basically acausal, yet simultaneous way, GR suggests that the bodies (represented by the stress-energy tensor) have an effect on the geometry of spacetime (the metric tensor), which then affects the bodies in turn (the geodetic equations). This might not be a problem, except for the fact that their exist valid solutions like the van Stocktum, Gödel, and Alcubierrie metrics allow you to create a circle of events which are still seperated by timelike intervals (closed timelike curves), which... Comment too long. Click here to view the full text.
because we have absolutely no experimental evidence for acausality
also metrics such as godel's do obey causality, and also just because it's a mathematical solution doesn't mean it's in any way a good physical solution
EFE break down at certain extremes, we already know this. is meme theory the way to fix that breakdown? probably not, but it sounds like you don't actually care about physics being a science (rather than physics being a study of mathematics), so i guess you'll be a great meme theorist
>>8093369 I didn't say acausality as such had been observed, certainly not at normal scales. My question is if it's possible that causality might a) be an emergent phenomenon of something which is acausal, and b) if that causality might itself break down under extreme conditions.
As for the "not all mathematical solutions are good physical solutions", well, then we still have to explain what those constraints are and why they exist. Physics tends to follow the math quite closely. No one had ever observed... Comment too long. Click here to view the full text.
Researchers say the "sperm crisis" is a tough nut to bust, and "that if we keep fixing the problem, in 10,000 years no men will be producing sperm." http://discovermagazine.com/2011/nov/12-impatient-futurist-sperm-crisis-tough-nut-crack
Why are there so many theorems that are completely obvious/common sense? IVT/EVT are the first ones that come to mind. Do there really need to be theorems for those things? They just state the obvious. The logic behind them just can't be refuted. So what purpose do they serve?
During the summer my room gets super fucking hot from the sun beating on my room in the second half of the day . We have AC and there is a vent in my room but it still gets super warm especially with a computer going.
I notice that when I walk out into the hall from my room, that there is a noticeable different temp, much cooler in the hall.
If I have a fan positioned at my room doorway, should I have it positioned in or out to make my room as cool as possible, and should it be directly at the door bounary or offset in some way?
For the record, I think I should have it pointing into my room. I figure that the air will be coolest lower down outside my door, and forcing that air into my room will help the most, but I don't know if that is helpful with the AC also blowing into my room
>>8092954 I am not going to lie, there is some memorization in math. A lot of the times you need to memorize postulates and the most immediately useful theorems so that you can do anything.
The difference between bio and math is that the things you memorize in math there is a sense of logical continuation. Many propositions immediately follow from another so as long as you are sharp and remember just the fundamentals, you can come up with the rest.
In a recent test of set theory that I took, to prove a proposition I needed to use a tautology that at the time I did not remember was given to us. I constructed the tautology that would make the proof possible and then made the entire truth table for it, calling it a lemma, and then finishing my proof as an immediate consecuence of the lemma.
Then I checked my notes and that was one of the first tautologies we were ever taught.
However, if you forget what is in the left side of the heart you cannot take one of your classmates and fucking dissect him there to find out. You absolutely need to know that or else you are fucked forever, as you will never be able to derive it.
If you are asked to name something, you will never be able to derive the train of thought of the biologist from 300 years ago who named it, you better remember that because you will never derive it.
Is fear of the dark an atavism caused by evolutionary psychology?
I recently moved to a rural area and I find it curious that I experience faint panic attack symptoms if I go out at night(it's almost pitch black thanks to a lack of illumination sources). Worth mentioning that I am a materialist, ergo I do not have the faintest belief in supernatural occurrences.
>>8092978 uhh of course its common its the like the only fear all humans have. And it makes perfect sense, Going into an unknown is dangerous, especially when it's nearly pitch black, plenty of evolutionary reasons for it to be bred into us.
I was a little unsure what board to post this on, but I decided that since it's about (hypothetical) biology that this one would be the best fit. My question is, if futanari actually existed (in the form depicted in e.g. H-doujins), which of their... bits would they urinate out of? The way I see it, there's three possibilities: It just comes out of one or the other always It comes out of both at once They can control which one it comes out of Which one would be most likely?
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