Archived threads in /sci/ - Science & Math - 812. page

Become a professor and study/synthesize whatever the fuck you want. Thats my goal

>Chemfag here. I'm currently finishing up my sophomore year and preparing to enter into my upper division courses.
lol if you thought organic was serious shit, wait till you get a good beating from biochem where labs are nothing but titrations and other annoying shit

>>8706418
I didn't though, I honestly don't understand why people believe organic is the most hellish class there is. I had no problem understanding the subject matter, but it was a shit ton of work to do. I'm more worried about Pchem than anything, since I've heard that is the class that makes or breaks you.

Literally any engineering degree. For Chem E, it's DuPont or 3M. Luckily, I'm going off to grad school and will have guaranteed internships

>>8705892
>go into mech-E class
>literally no one likes math or knows anything about it
>nobody likes physics
>only about half the class are even interested in how things work, how to take them apart and fix them

sad tbqh

>>8705892
actually thats not true. GM always has tons of openings because nobody wants to live in detroit.

Life is a meme

>>8705620

civil is least meme but also brainlet tier

what is the point of having 3 of these kinds of threads

How do you know you're good at maths if you've never done maths ?

>>8705252
>true math is only higher math
>being good at the basics is not a hint that you are good at the more advanced stuff

>>8705257
Being able to walk is not a hint at being able to be an Olympic athlete

Being able to add and fucking subtract doesn't mean you're even remotely competent at even differentiation

>>8704709
wtf is a supercell

>>8704710
a larger ferrocell

>>8704711
Please explain what this is.

>>8704644
>the rifle only recoils once the bullet has left the barrel
I don't think this is exactly true. I think the slide pulls back in time with the bullet leaving; only when the slide has hit the end of its track does it kick the gun. This revolver has kick from the start: https://www.youtube.com/watch?v=VSlnLBcWbHA

The reason a rocket flies is the difference in force from the pressure of the propellant on the back wall and the non-existant wall that is the nozzle.

>>8704644
Of course it's pushing against something. It's pushing against the propellant, just as the the propeller is pushing against the air. It doesn't matter what happens to the propellant, just that it pushed the propellant back and thus gained a force in the opposite direction.

> the rifle only recoils once the bullet has left the barrel.
Nope, wrong. The rifle recoil travels at the speed of sound immediately after the propellant ignites.

>>8704644
You are trolling right? A jet engine is just a couple of propellers in a ducted fan cowling with some fuel injected and ignited to increase the velocity of the escaping gas. Its not much different than a propeller.

>the rocket is not pushing against anything in space

Yes... it is. Every action has an equal and opposite reaction. You cant throw shit out the back of a rocket without said shit throwing the rocket in turn. The only reason gas can escape the nozzle is because of the pressure the nozzle exerts on the gas, and bice versa.

>>8703206
>tfw no patrician longskull race because they were killed off by round skulled morons who set humans back a million years

>>8703206
they're deformed skulls

>>8703230
>the skull can grow

>>8702792
what exactly am I looking at?

>>8702807
same backgrounds in one mission (apollo 17). how is it possible?

So what's happening here?
What's the meaning behind this?
Where's the quick rundown?
CAN YOU NOT TALK TO ME?!

>>8702664
INFP masterrace

>>8702664
What the hell is your problem with INTP's dude?

We are peaceful people stuck in our dreams.

Is it possible to be ENTP shut-in?

I don't know about any tech podcasts, but 99% Invisible is fucking fascinating. I think it started out just being about architecture/civil engineering stuff, but they deviate from that pretty regularly. They had an episode about the development of the TASER, for example, and another on guano farming.

Here's the episode that got me addicted: http://99percentinvisible.org/episode/americas-last-top-model/

Listened to a few, they're pretty fucking good man. Anyone else have any engineering or other related podcasts?

>>8703090

amp hour

waste of time, waste of money.

>>8701847
So true it hurts

>>8701847
this

your boss will still be a business studies major, same as everyone else

>>8700397
We have this thread every single day, yet you still don't learn

>>8700401
>new finding comes out a couple of days ago
>everyday

kys

>>8700397
How does this disprove man made climate change? And, more importantly, why does this evidence "count", but the evidence for man made climate doesn't?

File: nofap_bullshit.jpg (628KB, 1023x2258px) Image search: [Google]

628KB, 1023x2258px

>>8696694
>Is nofap pseudoscience
Yes
>Does it have any real studies backing it up?
No
>http://chaosandpain.blogspot.com/2013/07/no-fap-more-like-no-fucking-way.html?zx=5c392185e96536fa
>http://chaosandpain.blogspot.com/2010/09/enough-already-sex-and-baddassery-are.html
>http://chaosandpain.blogspot.com/2010/09/enough-already-sex-and-baddassery-are_07.html
>https://en.wikipedia.org/wiki/Masturbation#Health_effects
>http://www.europeanurology.com/article/S0302-2838(16)00377-8/abstract/ejaculation-frequency-and-risk-of-prostate-cancer-updated-results-with-an-additional-decade-of-follow-up
>http://www.webmd.com/prostate-cancer/news/20040406/frequent-ejaculation-prostate
>http://urology.jhu.edu/newsletter/prostate_cancer712.php
>http://www.frequenturinationinmenexplained.com/ejaculation-and-prostate-cancer/
>http://m.joe.endocrinology-journals.org/content/52/1/51.short
>http://answers.webmd.com/answers/5004889/what-nutrients-do-you-lose-when-ejaculating-or-masterbating-do-you-lose-testerone-
>https://www.healthtap.com/user_questions/1294935-how-long-does-your-body-take-to-replace-the-nutrients-lost-by-masturbation

>>8696967
nigga, i ain't reading all that. I will continue to believe nofap works until proven otherwise

File: 1486660565883.png (674KB, 562x842px) Image search: [Google]

674KB, 562x842px

>>8697085
>Provided with a mountain of facts proving otherwise
>Nigga I aint reading that, give me some facts proving otherwise

mfw

>>8707883
>It's a well known fact that light travels in the path that takes the shortest amount of time, not necessarily the shortest distance

https://www.youtube.com/watch?v=-WHpQVMZbjo

>>8707908
https://en.wikipedia.org/wiki/Fermat's_principle

>>8707883
No. Light travels in straight lines. Also even if it were possible for light to move like you describe then it would need to imply information propagating backwards in time (how would the photon know to bend before it hit the object?) I think there are some strange metamaterials that cause some strange effects, but nothing like you described. Finally light travels the path such that it's optical path length and geometric path length are both minimised (Fermats principle), the bending nature of the path would seem to imply that the geometric path length isn't minimised.

There, three reasons this wouldn't happen irl.

My turn:

I'm trying to do this classical mechanics question:
>Assume that the earth consists of a core of uniform density [math] \rho _c [/math] and a mantle of density [math] \rho _m [/math]. Further assume that the boundary between the two is of a similar shape to the outer surface, only with a radius 3/5 as large. Find the ratio [math] \rho _c / \rho _m [/math] that explains the observed quadrupole moment.

I've been at it the past couple of hours and I'm at a bit of a loss.

It means that there are other types of birds apart from pigeons.
Alternatively, pigeons can't be of other types of animals but birds.

>>8707628
nigga have you never heard of seagulls? Those are birds, but they're not pigeons. q.e.d.

a square is a figure with four parallel sides. it can be argued that all squares belong to the group of shapes we call rectangles

however, not all rectangles have four parallel sides of equal length. equal length is what defines a square. so not all rectangles are squares.

all M&Ms are candy, but not all candy are M&Ms.

now, if the only birds in the sample set that you're talking about are actually pigeons, then yes, all the birds are pigeons. obviously, pigeons are a type of bird, all pigeons are birds.

but not EVERY bird in existence is a pigeon.