Archived threads in /sci/ - Science & Math - 28. page
Images are sometimes not shown due to bandwidth/network limitations. Refreshing the page usually helps.
>science can even solve this
>>8183801
sterilize all the chads
>>8183801
>implying science even has authority to solve such problems
>>8184151
uhuh becuz people that don't know how it's made and works will know what can go wrong with it
My girlfriend told me, in all honesty, she is feeling more like a he. I have no problems with that but something came to my mind:
She is taking Contraceptive injections as a birth control method, these injections contain progesteron, high progesteron levels make you want to do nothing all day, can cause problems with sleeping and food cravings, elevated progesteron levels also cause lowered estrogen levels wich in turn could cause a bad mood (or depression?).
She has all these 'symptoms' so could it be that because she is taking those injections she is feeling...
Comment too long. Click here to view the full text.
>>8183768
lol you'll be fuckin a dude
Gender dysphoria is a mental illness. Hope they will finda a cure soon.
Hormones will fuck with you. Just use condoms FFS. I doubt she will get to the point of being truly transexual, but if she is not liking the effects, get her off of it.
To completely predict the effects hormone treatments will have is almost impossible, not even counting the placebo effects. All we have are statistics and risk factors. Changes in sex drive are well known. The details of that change are unpredictable.
What is the difference between zero and nothing, is there any to start with?
Google it you fucking mongoloid. You're just asking for definitions.
>>8183348
Nothing is the absence of everything
zero is the absence of some quantity
>>8183352
Then if you're talking about the quantity of everything, then zero and nothing mean the same thing, which is particularly PROBLEMATIC since depending on the perspective, something may be everything.
For example, you are everything for me, despite you just being someone.
> [eqn] dS_t = \mu S_t dt + \sigma S_t dW_t [/eqn]
Do people in the real world actually model stocks and options with this?
>>8182929
Yep https://en.wikipedia.org/wiki/Black%E2%80%93Scholes_equation
>>8182933
lul some dudes decided to see if the heat equation modeled stocks and they got a nobel prize for it
>>8182992
Have you ever seen the one-page proof of the existence of Nash Equilibria by the Kakutani fixed point theorem? It's as easy to get the economics prize if you're a mathematician as it is to get the peace prize if you're a politician.
suppose evolutionary pressures cause Cephalopods to evolve human level intelligence and begin tool building,
what kind of technology do yo think they could develop underwater?
>>8182827
I would wager their technology would be very different from our kind of technology and it would involve a lot of chemical manipulation....maybe they would use chemical reactions, store it somewhere around their body and use the ink to blast off heat
>>8182827
They'd develop spooky technology
The most simple of tools are the wedge, the lever, and inclined plane. Proto-civilizations typically start with the lever fist simply because a lever can be as simple as a tree branch and they're plentiful. Even monkeys use sticks as tools or weapons to protect themselves. In the ocean, not so many trees. I just don't see it happening with the resources they have to craft tools with.
which one of you have tried suicide
I thought I couldn't live without it. I was wrong
#yolo911nobuildings
>>8182261
so how did you tried suicide
>>8182259
A couple times.
I don't really remember much.
When were you when China started becoming the leader in some fields of science.
>>8182151
NEETing and clapping vigorously at every scientific endeavor.
>>8182151
What the shit? Radius?
>>8182361
read the news, name in filename.
Do you guys ever make stupid, careless mistakes on tests? What are some retard tier mistakes you've made under pressure?
>get to end of problem
>sqrt(6x) - 4sqrt(6x) - 3sqrt(6x)
>subtract the 3rt(x) from 4rt(x) first cause it sounds easier
>problem involving rate of change of a ball falling between 3 sec and 5 sec
>find function, but calculate rate of change as [f(5) - f(3)] / (5 - 3)
>rest...
Comment too long. Click here to view the full text.
>>8181988
I didn't write in my proof why one term could divide another and lost 15 points on my test.
If it wasn't for omitting that line, I would have had a 98
>>8181993
Your teacher sounds like a Jew.
One time while integrating using trig substitution in a test, I put that 3(3/3) was 1/3, the whole exercise was good except for the 1/3, luckily I only lost 5 points
So I was wondering what you guys thought about this in a serious way.
Dentistry evolved separate from medicine in the US in the 19th century due to the high demand. Every body needed a dentist and everybody needed a physician.
Both physicians and dentists made up doctorate degrees to associate themselves with real doctors in academic institutions. Neither the MD or the DMD are real doctorates in the literal sense of the word. Doctor means to teach in latin. At the time the there were a lot of Quack physicians and dentists running around. The doctor title allowed...
Comment too long. Click here to view the full text.
I'm wondering if we will see the collapse of Dentistry as a separate profession in our lifetimes. Dental schools are becoming more and more expensive to run, becoming more and more reduntant with medical schools as they realize that teeth are part of the body, and the need for dentists is declining in the developed world.
I predict that within our lifetimes we will see future dentists get an MD and then train in residency to do the dental surgeries that are currently taught in dental school.
This would be a cheaper alternative for patients and doctors. It...
Comment too long. Click here to view the full text.
This is totally wrong. I'm not in dental school, starting medical school, but a lot of people in my family in dentistry.
Dental demand is expected to grow like 20% or something, which is good.
Dental schools are more expensive, but you can make more money as a general dentist than a family doctor. The hours are better, and less training.
Everyone needs a dentist now and they will for a long time. A lot of peoples teeth are shit, you have no idea.
>>8181965
Well its expected to grow with the aging boomers. They all have silver fillings that need replaced. but after the boomers are gone? The population itself will drop AND most of these younger generations grew up with flourdiated water, which means their teeth are much more resistant to caries.
What comes after infinity??
>>8181857
Infinity + 1 you donut
Infinity just continues.
Look into cardinality. It is known.
Im nearing the end of my bachelor in mathematics and am looking at some more applied fields for a masters as I do not want to end up in research. I have some questions regarding different fields.
Ive always had an interest in artificial intelligence, and I love topology. I once picked up on somebody saying some applied topology is used in ai, can anyone tell me more about this?
Another course I liked was in mathematical finance (stochastic calculus, Black-Scholes-Merton) but I fucking hate statistics. Could financial mathematics or financial engineering be contenders...
Comment too long. Click here to view the full text.
>>8181374
How much statistics have you done? Time series analysis, regression analysis, and probability theory are all very intense mathematical fields that fall under the umbrella of "statistics". You get a lot of stuff in these fields like measure theory, functional analysis, linear algebra, numerical analysis, and analysis in general. Basic statistics sucks but I've grown an appreciation for statistics.
With that in mind, there're fields like machine learning and image processing, both of which...
Comment too long. Click here to view the full text.
>>8181402
I'm doing a research project in image processing. As an additional example, the whitening transform is used to suppress periodic noise within an image in the frequency domain (Fourier domain). Creating the transform actually boils down to taking a symmetric matrix, diagonalizing it, and solving it so that the covariance of the matrix becomes independent (I don't remember the details as it wasn't useful to me at the time). When you implement the method in Matlab or whatever, it involves finding the eigenvalues...
Comment too long. Click here to view the full text.
>>8181402
I know probability theory and statistics as seperate fields, probably because I havent gone deep enough into them. I know they are both derived from measure theory so it makes sense. Ive heard that functional analysis is basically an extension of linear algebra to infinte dimensional spaces, but past that I dont know much about it. It did sound interesting and I may take a course in it before I finish up, granted that I find the space in my curriculum. Most I know is basic statistics like hypothesis testing and linear...
Comment too long. Click here to view the full text.
Aside from differential equations, calculus and transforms, what mathematical disciplines should a physicist be proficient in?
>no linear algebra
>no functional analysis
>wants to do physics
wew
>>8181333
all of them
>>8181333
http://www.staff.science.uu.nl/~gadda001/goodtheorist/
The only things I know are proper sleep and meditation so feel free to share whatever you think might be helpful.
>>8180628
physical exercise
>>8181017
yeah that too but its quite obvious already unless you know a specific type of workout/routine
>>8181042
Then reading. And it still counts if your reading non traditional books *(manga, comics)/ things your interested in
Do video games have any positive effect on our brains?
I mean, they basically involve quick reactions and decision making of the sort we wouldn't be doing otherwise.
define positive effect
>>8180097
Spatial reasoning.
>>8180097
Depending on the game, they can improve our abilities of all kinds of different simple problem-solving exercises. But most of them don't do anything but keep me practicing quick mental arithmetic with estimations. And I wouldn't suggest any kind of universal effect, but if there's a particular skill you are shit at a game that involves it will help that.
you must now consume 10 cm^3 of an element of your choice from period 6. which element do you pick and why?
>>8179472
Gold. It wont kill me amd Ill have enough money afterwards.
>>8179482
/thread, was also going to post this. OP shoulda picked period 7.
>>8179482
you get approximately $8,324.75 from this according to
http://www.goldgrambars.com/calculator/gold_calc.php
and assuming elemental gold with none being lost
