Archived threads in /sci/ - Science & Math - 992. page

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The observable universe is fucking massive. So massive we can't even imagine the colossal scales involved. There has to be a more mysterious star out there but so far this is the one that has all the talk recently.

>>8590642
What's so mysterious about it?

>>8590911
https://en.wikipedia.org/wiki/KIC_8462852
tl;dr people think it might be an alien megastructure but it probably isn't.

>>8590512
Not very, just like smoking

>>8590512
Are you the sinus guy from a few days ago?

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acute doses of x-ray/gamma radiation below like 10 mSv are not harmful at all. It was shown from the atomic bomb blasts(acute dose of x-ray radiation you'd get just like a CT scan or x-ray) to not be harmful. all doses under 5 mSv had zero excess cancers compared to regular populations not exposed.

it was shown last year that in old people, CT scans of the chest below 7.5 mSv had no detectable DNA damage

it was shown in another study that the LOWEST average dose for a solid cancer was like 35 mSv, much higher than any CT scan. most CT scans are of the head(angled away from the eyes), one of the least radio-sensitive parts of the body, at like 2 mSv or less, not high enough to do jack shit even in an acute dose. we used to give adult doses to children in the 80s and 90s.

there is no way the doses you receive in a CT scan cause cancer. it has never ever been shown in decades it has been researched. it's harmful maybe if you're a small child and you're receiving a dozen scans in the same spot, but otherwise, there's no way

>>8589248
Do problems.

>>8589248
khanacademy

>>8589270
That's actually not a bad idea. I'll give it a try.

>>8592242

The real question is, why WOULD it mean that? Please explain what chain of logic lead you to this odd confusion.

a CI of 95% means that if the null hypothhesis is true then 95% of the time a randomly drawn sample will have a sample mean in that interval.


So I can't explain to you why it is not the case because it IS the case

>>8592251

If I have a sack of marbles with 95% white and 5%black marbles in them, there is a .95 probability that a random marble i will draw eill be a white one, right?

So if we have an infinite pool of samples, and we can say that 95% of these samples lie within a certain range of the population mean, why can't I say that a randomly drawn sample has a 95% chance to be within that range?

Yes. You need money to pay for talent and equipment.

>>8592145
To a point, but more progress also = more funding/investment.

>>8592145
The top research universities get federal grants and patent research, leasing it for profit (not giving back the federal tax dollars).

In turn this makes the school rich and they can afford to handpick the best of the best with lucrative grant money.

In exchange the US gains "prestige" they can claim to have the 'best universities' because they are federally subsidizing them heavily, all countries do this too btw.

The only issue is the university admin then go around giving themselves too big salaries, for example there is countless Provost and Vice-Provost, Deans, Board of Directors and other admins at my university all making over $400k/year plus they live for free either on campus or with housing credits, and they are given free travel. A large majority of them are politically appointed, such as our President who was a fundraiser for a political party thus he in turn hires all party cronies and fills their high paying positions.

It is entirely defined by what y is.

>>8591805
About as long as a piece of string.

>>8591816
what is y?

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>>8591784
will they ever learn?

>>8591784
Sounds like a dick.

>>8591784
Is she a doctor?

>>8591550
>How do you get to the stage where you can do this stuff?

I genuinely dont intend to hurt your feelings or intelligence. But i learned how to do this type of problem in maybe 9th-10th grade. Although i would not be confident enough to say i know it for certain until 2nd year at uni.

>>8591556
To clarify, i did not understand the notation on the left at that grade, nor the inequality meaning in relation to the notation, but i would have been able to solve RHS at that age.

>>8591550
The way the problem is solved is voluntary hookus-pookus. With tools like ln you could find it more easily.

>>8591333
Either way they're not conscious so it doesn't matter, faggot.

What does it mean to be alive?

>>8591333
Check'd

Anyway, they only serve one function: to bend their knees and lower their ass to the ground whenever something else tells them to.

By extrapolation, they're precisely as alive as your mom.

>>8591288
No. High dimensional space is well understood in mathematics.

>>8591288
We need better ways to study difficult moduli problems if we ever hope to solve the landscape problem in string theory.

>>8591311
>>8591327
(Y)

>OP has one dick
>Can fit six in his mouth

explain this shit

>>8591253
Given that his dick is infinitesimally long he would be able to fit infinitely many dicks in his mouth

Is this bait ?

look at your notes and textbook
look at similar problems in your notes and textbook

4chan is not your personal army

>>8591247
A man fires a .22 revolver directly up into the sky. How long will the bullet fall back to earth? Assume the bullet's path of trajectory is free of all forces besides gravity and initial launch.

>>8591247
You have to split the vectors of the velocities into horizontal and vertical (using trigonometry). Then you determine how long it takes for the ball to hit the ground by taking gravity, vertical velocity and initial height into consideration. Then you take that time and multiply it to the horizontal speed to find the distance. Don't forget to keep your units the same (ie. Meters to meters, seconds to seconds instead of meters to inches and seconds to minutes).

>>8591226
B-but house flies can diverge into separate species over the course of a human life

>>8591231
If that was true, and evolution is real. houseflies would have surpassed humans in intelligence millions of years ago

The houseflies didn't need to evolve human-lvl intelligence.

Is it time for another "shit that never happened" thread?

>>8591219
Fuck off and don't come back.

i dont really understand why everyone is so salty

>>8591182
The only possible SUSY models that are left are high energy SUSY models. i.e. The SUSY isn't noticeable until you reach high energies

Such energies are not yet reachable by the LHC and thus can not yet be tested experimentally.

>>8591189 How much energy is exactly needed to do that?

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Well you see its rather quite elementary. THe standard particles actually exist but SUSY is just an idea someone came up with and those particles don't exist.