Archived threads in /sci/ - Science & Math - 245. page
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>± in front of number
Does this bug anyone else? I almost want to prank call them and ask for the negative part of the land.
I mean some of them put it after the number which properly communicates that there is an unspecified uncertainty, but that's rare.
>>7976473
Sell 14 acres of land to them. This is the obvious solution.
>>7976473
just called they told me that they were a business and not a joke then hung up after threatening to call the police if i called again
scientific theory of light being split up by a prism?
why it happens?
>>7976381
White light is actually made up of several wavelengths of light. The angle of refraction through the glass is dependent on the wavelength of light, so different wavelengths get refracted differently. This occurs because the material absorbs some of the light's energy and slows it down (this is a simplification).
>>7976437
Yes I know that, but how is it possible that the prism absorbs the light and slows it down, is it because of the photons in the light or?
>>7976455
You don't know about refraction? Le Google
Why doesn't /sci/ believe in hoverboards?
>Can't fly long
New batteries coming soon, 15 minute fly time by 2020
>Dangerous
Multirotors have redundancy, lose a few motors, float to the ground on the rest
>No-one will be allowed to fly it
It will be autonomous in built up areas, no restrictions on private land/wilderness
>No market
Getting through thick bush, swamp and crevasses is a pain. I watched a programme about some botanists...
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>>7976349
>bush, swamp and crevasses
If you live in those areas you're probably broke as fuck, with exceptions for some drug warlords
People are too fat.
Because 15 minutes by the time I'm 32 is fucking useless, good hover boards will be about when I'm too old to give a fuck
Hey /sci/, math retard here.
I'm trying to make an algorithm:
>(x * 0.01) - 1 = y
How can I make (1) decrease by half whenever (x) is halved?
Example:
>(100 * 0.01) - 1
>(50 * 0.01) - (1 / 2)
>(25 * 0.01) - (1 / 4)
Basically, you take x and you ask it nicely.
But since you never go outside and your pale skin acts like a flashtorch on the eyes, you're just going to piss x off. So stay away.
Can you explain what you want more
>>7976337
(x*0.01) - x/100
Is that what you want?
Because what you said is like asking "Hi guys, my car broke down, I am trying to an engine <random engine specs>"
Hi guys, I was doing some stuff and found a constant which might simplify a deficit formula but I can't find a way to express it. I know it must be cubic but that's pretty much all I've figured out.
>>7976187
>deficit
Are you doing finance or something. Tell me the problem, I'm good at making models.
Here's an arithmetic formula
A 4,000000E+00
B -7,200000E+01
C 3,240000E+02
thats a polynom of 2nd grade or whatever this is called in english i dont care
the differences scheme youre using is similar to a derivative in discrete form.
that your 2nd differences are constant should have told you somthing.
I'm in my 2nd year of undergraduate mathematics and I'm wondering, what are the potential jobs available for a graduate? And are they accessible
(I studied maths because I am interested in it but I will need money for living too desu)
Hahahahhahahahahhahaha
>>7976167
Financial work, data work, academic work, G4P work; go learn some coding on the side senpai.
>tfw you find out your research is wrong.
There's no problem, you achieved more knowledge, your research was a success.
>not using Wikipedia
>>7977783
Daily reminder that Wikipedia is not for original research and this is correct behavior for an online encyclopedia.
People who are studying CS: how often do you use sentential logic (propositional calculus)/ how useful is it to learn? Recently I have been getting into formal logic and I was just wondering how it is applied to that specific field.
>>7976142
I have used boole algebra to design electronic circuits (Compter Organization and Computer Architecture)
However, I never used propositional calculus directly, I think it is more of a "mathematical thinking" kind of subject.
>>7976756
Besides that, you will use propositional calculus if you are going to program in Prolog.
>>7976142
I've been coding apps for five years and never had to use anything more complicated than a tridimensional array.
I'm extremely confused about light. It's a transverse wave, right? so therefore it must be going through a medium, if so which medium does it travel through (as it travels through vacuums). However I got more confused when reading about photoelectric emission, because the way it was explained in the textbook was individual photons of certain frequencies which carried enough energy to move electrons. If this is the case, then i assume that photons are the waves themselves, as that's the only way an individual thing having a "frequency" makes sense to...
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>>7976022
or, this has just occured to me, is it an oscillating particle? so the frequency is the frequency of the oscillation? and the wavelength is caused by the frequency when light is moving through space
Photons have mass.
>The closer the object's speed is to light speed, the greater the increase in inertial mass; to reach light speed exactly would require an infinitely strong force acting on the body.
Photons move at light speed.
Something here doesn't add up.
>>7976031
Photons have mass-energy.
They have no (and cannot have) rest mass.
Any reference to photon mass is laziness on part of the author on the assumption that the reader understands this.
Hello /sci/ a very simple question. What pen colour do you prefer for writing: black or blue?
Also, what pen(s) you prefer to use??
>I prefer the classic blu pen from bic
Using a classic blue bic right now, shits cash yo
Classic blue bic as well
Once you go black you never go back
Is it true that all primes above 5 have a remainder of either 1 or 5 when divided by 6 using Euclidean division?
How the fuck should I know?
>>7975987
code and test it faggot
>>7975987
I think so.
Let's check.
Rem = 0: Div by 6, not prime.
Rem = 1: Well, 13 is prime.
Rem =2: Then since 2 div 6 and 2 div 2, not prime.
Rem =3: Then since 3 div 6 and 3 div 3, not prine.
Rem = 4: Then since 2 div 6 and 2 div 4, not prime.
Rem = 5: Well, 17 is prime.
So, yes.
Any of you retards discovered meditation yet?
Been doing it for 3 weeks now, definitely find it easier to get focused and calm.
I'd suggest learning both transcendental and mindful. Both come in handy at different times, depending on how you're feeling and how you want to feel.
>it's scientific fact that it's helpful
You have your escapism where you sit and do nothing, I have my escapism where I go and do something.
You're confusing masturbation with meditation
>>7975990
But how focused are you while you do it?
How much anxiety builds up in you throughout a day?
Use caffeine?
Enter the mind, bring nothing with you.
Combinatorics (or algebra or pretty much anything) is way more interesting than anything to do with analysis
>>7975920
This isn't an unpopular opinion
>>7975930
Apparently at my math department it is considering 80% of courses are analysis
>>7975920
Pure math is for ultra-spergs
What in your opinion is the single greatest engineering achievement.
Anything from the pyramids to the ISS
my dick
Quark bomb
>>7975882
The Watt steam engine.
Is CS the only STEM job that allows you to work from home/freelance?
with a maths degree you won't even have to work, you'll be able to retire at 25 as a millionaire
t. maths major
I'm a freelance philosopher. I work from home. People come to me and pay me for ethical advice.
>>7975879
Engineering is better than CS. Enjoy your codemonkey jobs and lower salary pleb.
