does it concern anyone that there is huge island of plastic, and trash in the pacific ocean? i have. i have only found one guy doing something about it. i was wondering if there was a way to help.
I think about it. It doesn't really bother me since I'm very lazy and it doesn't seem to be affecting me directly. I'm definitely aware that we're destroying the environment though, so I'm not in denial.
>i was wondering if there was a way to help.
No, there's no way.
Just give up and accept it.
I'm in the process of teaching myself undergraduate level mathematics.
I've done basic algebra, calculus and real analysis and next I'm looking to learn Number Theory, Group Theory and more advanced Differential Equations.
Is there a logical order to learn these in, or does it not really matter?
I've heard number theory builds on group theory, but does it do so enough that I need to know group theory before I can learn number theory?
what kind of STEM work is best suited for someone like me?
>somewhat average aptitude in math and science
>dont hate any stem discipline, but unless it pertains to my goals or is directly important to me its hard maintaining interest for long periods of time
>i enjoy building and designing things
>not afraid of taking risks
Non-mathematician here. Topology sounds pretty cool. What do I need to learn to study topology on my own?
Have only had calculus.
how to prepare for maths and physics ?
how much do i have to study everyday?
how do i revise and memorize all the formulas?
how do i divide my time?
I used to be good in maths and physics, this year my grades went down to 60% because i didn't study shit, although I can theoratically understand what's happening
age:18, senior year
math: derivability, series, inverse functions, complex numbers, 3x3 matrices(determinant and inverse)
physics: electricity in general: RC, RL , RLC(forced and free(?) ) , with their differential equations
This, and also you should break what you need to know down to it's tiny essential tasks. If you don't know how to, say, divide fractions, and you keep getting things wrong because of it, research how to and then you can move forward with other problems.
Have a really really good foundation.
if our bodies temperature are around 37º C, why when we are in some place at 30º C temperature do we feel heat instead of cold
Our body generates its own heat, especially if we are active. Without cooling off our bodies will overheat even at temperatures bellow our natural body temperature. And even though evaporative cooling (i.e. sweating) can work when it is hotter than our natural body temperature outside, it does not work particularly well at high temperatures.
/sci/ webm thread
what's happening between the engine ignition and the moment it's fully lit (transparent exhaust gas + shock diamonds or whatever they are called) ?
the exhaust is red for a few second for some reasons , why ?
also what's the use of the circles that break on the top right part of the engine ?
i know it has to do with the different temperatures. it doesn't instantaneous get to the temperature needed for lift off. the shapes in the burning fuel is like the ones in a welder, and they areas of different temperatures. as for the circles i have no clue.
So where do you guys download your textbooks from nowadays?
If the Big Bang created space, then what was the singularity contained in and where did it pop into existence?
So wait, I've discovered a new way to look at the singularity.
So could the singularity have already been infinite size, always expanding, with uniform distribution of energy
And then became unstable, rippled and caused matter to exist, but will continue to expand further until it is uniform again?
So there really was no singularity the size of an atom like they say. We are in the singularity right now.
Hey /sci/ I'm at university studying engineering but I feel kind of disheartened, because it wasn't what was expecting, and I'm thinking of transferring to a Physics course, because I really enjoy physics and math. How are Physics courses at university? My only desire is to do lt of physics and math with no bullshit Management and Business.
tl;dr I don't like engineering and would like to do Physics.
You'll need a PHD, publishing in multiple well regarded journals, good references, top grades, good networking and blind luck. I am somewhat regretting doing a Physics degree. If you think you can handle it give it a go but it's not fun
Is there any negative (health) effect/risk of wearing a non stainless, rusty steel ring?
Its not that rusty and looks are subjective... Anyway, i didnt came here for fashion advice, i just want to know the health effects
I have a problem that I can't resolve in my mind. If you have an Archimedes Screw in a tube am I right in saying that it is impossible for air to flow through the tube faster than the speed of the screw? I need to know this for an invention that I am working on.
Discuss. I've just seen this and I've never thought of this calculations in this way. My mind is pretty much blown. (for the record, I'm not a scientist and have never taken any course in science/maths/etc after high school).
Layman here. I need a list of books that fully explain Evolution. I don't want books or essays where the writers simply says "there's underwhelming evidence" and goes on pandering about how amazing science is. I want recommended books with evidence that can referenced and read on.
WHAT IS THE SCENT EMANATING FROM SPIDERS? IS IT A PHEROMONE? IF SO, WHAT IS ITS CHEMICAL CONSTITUTION?
IT IS A BITTER AND OVERLY PUNGENT SCENT, WHICH I HAVE NOTICED THAT NOT ALL PERSONS CAN SENSE, WHICH IS ODD.