Archived threads in /sci/ - Science & Math - 326. page
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For a while now I have been trying to understand the concept of space-time and it hasn't quite clicked. If I could get your interpretation or how it clicked for you, it would help a lot.
>>7931921
It is a 4D Pseudo-Riemannian Manifold.
>>7931921
watch this short playlist
thank me later
best channel on youtube
https://www.youtube.com/watch?v=YycAzdtUIko&list=PLsPUh22kYmNAmjsHke4pd8S9z6m_hVRur
>>7931921
Spacetime is the n=3 case of hyperspace with an additional time dimension.
Is there a reason why everybody isn't wanting to become a Registered Nurse?
You make around $65,000 a year, and only have to go to college for two years.
In other words, you're making more than enough engineer while only going to college for two years
Why wasn't I told about this in school? Why aren't you and I wanting to become one right now? Let's take the medical pill, bros
It's a shitty job and paid a lot worse where I live.
>>7931914
Huh? Do you live in america, canada, Europe, or Australia? Google your country and the registered nurse salary
>>7931910
>You make around $65,000 a year, and only have to go to college for two years.
Code Monkey here.
$80k and no college.
Shit niggers, I went to Vo-Tech.
Have any of you used your knowledge of math and/or science in a casual setting that didn't involve money, your job, or cooking?
>>7931869
Yes
>or cooking
got me there.
I use alot of my chemistry knowledge and rudimentary physics knowledge in food preparation.
See >>7931785.
I've also used my chem knowledge to make the most grade A brownies. Again, cooking, but yeah.
>>7931869
I played around with using Markov chains for stochastic melody generation. Used some of the melodies on an album I'm working in.
/sci/
Does anyone have any ideas on how to separate beta carotene, capsaicin, and 95% EtOH in water?
I'm doing at at home extraction of capsaicin from habbenero chillis using 95% EtOH (Everclear), however as it turns out beta carotene is also readily soluble in ethanol.
Can anyone propose a way to remove the beta carotene from the Capsaicin/EtOH solution?
>>7931785
forgot to mention, it needs to be food-grade. can't be using any kind of industrial solvents or the like.
Figure out how soluble they are. Lower/raise alcohol content accordingly.
Depending on your heating capabilities, you may be able to vaporize off the ethanol and water, then boil off one product (look at their boiling point and melting points). Wikipedia says that beta carotene decomposes, if you can find out to what you could just heat it off.
If light cannot escape from a black hole then how does gravity considering it has the same speed as light?
>>7931713
I just realized I know no physics.
>>7931713
Perhaps you can think of it as the deformation of space propagating out at the speed of light.
>>7931713
Gravity in the case of a black hole is the hole itself. A hole cannot escape from a hole.
https://plus.google.com/106680226131440966362/posts/X9sNPQGfSVF
K... KEEP ME POSTED
>>7931602
can you tell me what a species is informally ? and how it helps category theory ?
>>7931604
Today is pi's day.
What we can do?
3...
>>7931458
>What we can do?
do whatever you like
pi-day is gay as fuck
>>7931462
I say pi, not pennis, bitch
1...
So what do you think is at the end of Cosmos? Some giant wall or black hole?
>>7931444
trips smell like a shitpost from here in the 'center of the spergmos'
![tumblr_lk6jefb6if1qcvvvlo1_500[1].gif](https://i.imgur.com/zosBjIn.gif "tumblr_lk6jefb6if1qcvvvlo1_500[1].gif")
>>7931444
Fuck you're dumb
Is there a way to calculate the escape velocity of a black hole? Obviously it has to be greater than or equal to the speed of light but does the formula (2GM/r)^.5 apply to black holes If so what is the radius of a black hole? is it the Schwarzschild radius (I think this is just the radius of the event horizon) or is it simply 0 seeing how their volume is 0.
>>7931168
>but does the formula (2GM/r)^.5 apply to black holes
Yes, there are 2 corrections that perfectly cancel out giving the classical result.
>>7931181
So what exactly would the radius of a black hole be? As far as I understand the Schwarzschild radius is simply the radius at which Vese>c but not actually part of the black hole
Using Planck length for r & ~5SolarMasses I got Vese=10^31meters/second
Hey /sci/entists, /k/unt here.
When I fire a round in my gun, the shot bullet has a number of important variables for me.
Mainly:
>weight
>speed
Increasing only the weight of a bullet means the same amount of "energy," or ft-lbs as any other bullet fired (potentially) but the range is changed drastically. The affect on the target can also change with dramatic change in weight but nothing else.
Adding more powder, or using a more potent explosive, roughly means increasing my speed....
Comment too long. Click here to view the full text.
cool gun OP. Is that a FAMAS?
What the fuck are you asking?
>>7931005
kinetic energy increases with velocity squared, but only linearly with mass
so increasing the projectile velocity is favorable over increasing the projectile mass
you failed to actually ask a coherent question though
How do you read the decimal number:
>3.14
Is it
a) Three point one four
b) Three point fourteen
Why are my professors using b) instead of a) , and are they retarded?
glad to see mom and dads tuition money going to good use
>>7930841
Mom and Dad said that this is the best way to get job security.
Why would Mom and Dad lie?
If I can express it in fractions I always do.
So lately I've been thinking about the speed of light and black holes and came to a conclusion after a study on light in a black hole that, in theory a ship could be going at the speed of light and get stuck in the black holes gravity. I have come to this conclusion due to the fact that it has been said the even light cannot escape the gravity of a black hole. Could this technically make light speed ships even more dangerous than the concept already is?
It would be great though if you actually knew something about how space works
>>7930533
Quote "Black holes* are some of the most perplexing objects in the entire Universe. Objects so dense, where gravitation is so strong, that nothing, not even light, can escape from it." - http://scienceblogs.com/
The speed of light is 680 million mph
A ship cannot go 680 million mph
A human cannot survive travelling 680 million mph
Can someone who knows shit about electronics answer something I've been thinking for awhile?
We all know water's bad for electronics but if I take a component such as pic related that's not hooked up to any power supply and soak it in water, would it work afterwards as long as it is completely dried out? Why does getting a non-powered electrical component wet matter if it can be dried out?
>>7930237
Impurities in the water are the main concern, otherwise there's no reason it wouldn't work after being completely dried.
>>7930237
mineral deposits in the water left on the board can short it out once its powered again
if an immovable object was acted upon by an unstoppable force, what would happen scientifically speaking?
>>7930196
They would go through each other, dipshit
>>7930196
a big guy
>>7930196
a big guy
If all 7+ billion people on Earth weighed 400 pounds would it affect Earth's movement in any way, shape, or form?
>>7930170
https://www.youtube.com/watch?v=eyw9J6NuFSM
nope
the fat fuck has a 7up in his scooter. When I'm in power, useless leeches like him will be use as firewood
