Archived threads in /sci/ - Science & Math - 651. page
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2 threads in 1!
1: Anyone here join Mensa, or a similar high IQ club? is it worth it? make good friends, or is it just an ego thing?
2: School was always easy for me, I didn't continue studying maths at uni, but I did some advanced stats (factor analysis, multilevel regression etc.) I noticed that in the last few years of high school a lot of people who were "good" at maths suddenly weren't; calculus, and higher level probability seemed somehow qualitatively different to the maths they did earlier. I am curious if anyone who studied maths further...
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>>7637145
I'm finishing up my math undergrad, which isn't really high level math, but basically things only get significantly harder when I skimp on the pre-requisite material.
If I have a good understanding of how all the lesser concepts work, and then it's just a matter of how they come together to form another concept. It's not bad.
>>7637160
did you see anyone else hit a wall?
>1.)
Mensa is just a circle-jerking waste of time. If you have a high enough IQ (not equivalent to being smart), why would you waste your time with it?
I think they do offer some scholarships and other small benefits for members though. If you have the time to kill and think you'll get in and enjoy it, go for it I guess. Just be prepared for the real life equivalent of /sci/ shitposters and popsci fans.
And I'm not just mad and biased here. I don't know my IQ but it was high enough in grade school to be admitted to the gifted...
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Why does the wiki for photons say it has mass when photons are considered a massless particle. How could a particle without mass even exist in the first place? If photons truly are massless, then how can certain frequencies of photons interact with electrons in metal? How can photons from a heat lamp " generate " heat if they are massless? Something that travels at the speed of light cannot have mass, but something without mass cannot interact with something that does have mass right?
>but something without mass cannot interact with something that does have mass right?
What gave you that idea?
>>7637143
>but something without mass cannot interact with something that does have mass right?
Why would you assume that? That seems rather silly.
>>7637143
It says it has 0 mass. It then lists the inertial mass.
If my professor has 3 exams for 3 groups in next 24 hours and they all might be the same and I just finished with exam as first group and posted all the questions so other groups can see them...
Can i be charged with academic dishonesty?
>>7637133
You're going to wind up working in a gas station.
>>7637136
I need serious answer please, Im having second thoughts
>>7637140
>Can i be charged with academic dishonesty?
yes
Why don't patients get addicted to opiates like heroin used in hospitals as pain relievers the same way a regular user would?
Neuroscientist here. I'm on my phone right now, so I'll keep it short. It has to do with their general wellbeing. A bunch of experiments on mice showed a lack of addiction when their environment was stimulating. Other mice developed addiction when confined to a cage lacking in stimulation. The same effect has been observed in humans, people develop addiction when they "need" the drug for stimulation. Obviously I missed a bunch of details here, but that's the general idea
I think they do sometimes. But seeing as it would be a serious liability the doctors must take steps to avoid it. Environment and the way a drug is administered could be important too. A person compartmentalizes things that happen in the hospital, you know? The habit of finding the drug yourself and injecting it yourself requires an almost seperate conditioning process.
>>7637096
Okay you're kidding me if you don't know this.
Most commoners wouldn't but /sci/, I am ashamed.
Addiction is much less of a chemical attraction and more of a mental issue.
It all depends on the conditions of how and where the drug was used.
book recommendation thread?
book recommendation thread
fuccbois, I'm studying genetics at the moment, and as much as I loathe all the mathfags here, this probability/statistics shit just fascinates me.
how about one of you kind souls recommend me a book on probability or stats, or both, beginner level if possible
in exchange i can recommend any of you who happens to be interested in microbiology the following:
microbiology: an evolving science (9780393934472)
The political economy of URSS
History mixed with economy and statistics.
t. Math student
All of statistics by wasserman
>>7637028
would that taste good
Is it possible to weaponize a particle accelerator?
>>7636907
Yes, fill it with explosives
yeah, look up ray guns, death rays etc. there's some experimental work done, but it's mostly theoretical.
I'm sure it's being worked on in secrecy.
>>7636907
yeah, just open it up.
>What is a particle beam
New stupid questions general thread.
Last stupid questions general thread is autosage.
Older stupid questions general still archive here for now
>>7622225
>>7636900
I'll start off
flat surface can only provide a perpendicular counter force right?
second question is this picture,
I'm supposed to find the angle of the bar at which this construction is in balance but I can't seem to find the right equations to do this
>>7636917
This is a statics questions. You're missing relevent info required to solve it. An angle or another length is required.
>>7636920
no other info is given
if you would make this construction the bar would move itself to a certain angle, I just need to know that damn angle
but I don't see how
Why are the astronomers so lame? It is likely that there is a gas giant in the Oort cloud and yet none of them can spot it.
It is likely....
{citation needed}
>>7636753
you wouldn't be able to see the tiny planetesimals 2 light years away...
it's like the asteroid belt. people think of it as some dense field of asteroids but the whole asteroid belt's mass is ~4% the mass of the Moon...
it's just a region that contains a lot of asteroids
>>7636753
We have to find the Oort cloud first punkass. As of right now it is still just a theory. No major physical evidence has been presented to confirm its existence
What does /sci/ think of "the paleo diet"? Is there some legitimate scientific/biological backing for the idea that it's healthy to eat the way our caveman ancestors did?
They are the exact same as us so of course it's healthy. Why wouldn't it be?
Not that it's the best diet but it's not a bad one.
>>7636751
The fact is it just significantly limits and cuts carbs sources that are unnecessary since people are lazy slobs.... That's it.
Cavemen didn't eat like that. So... no.
Here, watch a video. http://tedxtalks.ted.com/video/Debunking-the-Paleo-Diet-Christ
Could anybody explain to me why running up a hill is harder than running on level ground? I imagine it has something to do with overcoming gravity's pull? But gravity is present everywhere, yes? Is the steepness a factor?
Thank you
>>7636582
You're increasing your potential energy, thus doing more work. In principle on a flat frictionless surface going round the Earth you would basically be able to keep moving forever once you started, moving uphill this is not so.
The force of gravity pulls you directly toward the center of mass of the Earth.
The normal force, the force that keeps you from going through solid objects like the ground, is always perpendicular to the surface.
So on a hill, the normal force is at an angle while the force of gravity is still straight downward, so less of the force of gravity gets counterbalanced by the normal force.
>>7636590
Going round..... lol
its flat mate
For science fiction writings, I want to accurately portray railguns and the math behind them. Could I get layman explanations of electrical terms and measurements? Volts, amps, joules, etc. Joules, if I understand correctly, are equivalent to kinetic energy, but everything else I don't understand at all.
>>7636532
Imagine that electricity is water or some other incompressible fluid, flowing down a pipe. The water molecules are actually electrons.
Voltage, measured in Volts, is the pressure in the pipe. The voltage difference between two points is a measure of how much energy it would take to move a charged object between those points - or how much energy would be released by letting it move the other way. (Moving an electron across a voltage of 1 Volt takes exactly one electron-Volt (eV) of energy, for instance).
Current,...
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>>7636554
Thank you, that helps a lot.
>>7636554
Doesn't pressure in water pipes increase flow-rate though?
Also how do you make sense of spark gaps with this analogy?
Any folks who are beasts at math here?
Describe your becoming
i.e. What was your childhood like? etc
Beast at math speaking. My childhood was lonely. At least I had the numbers to keep me company. Really, I had infinite friends...
>>7636483
What are/were your study habits?
>>7636483
>infinite friends...
kek..
Hello, i need your /g/elp. I'm looking
for a logical circuit that follows the table from the image. 'I' stands for Input and 'O' for Output. The 2 botton rows are practically impossible. Thanks to all :D
Memes matemáticas son muy calientes.
>>7636458
how about you make a proper truth table first
no comprehnede
Hey /sci/ do you know any where I can study chemistry so I can be prepared/ahead when I go to college
>>7636238
yes
>>7636238
ofc
yeah
Explain any knowledge you have on the subject of Quantum Mechanics.
>>7636231
le particles are le particles but also le waves and exists everywhere and nowhere at same timez
I took some coursework in the subject, but I'm not a physicist. What would you like to know? Explaining everything I know wouldn't be appropriate for a thread.
>>7636231
OP I would have to write multiple textbooks. As I learned QM by reading multiple textbooks.
