Archived threads in /sci/ - Science & Math - 2004. page

>>7779258
Do you mean [math]x^2+y^2[/math] ?

>>7779272
sorry, minus not plus.

>>7779272
>>7779274
no I mean x-y
Maybe even x^n-y^m if I can do some real sorcery

>>7779247
What would compel you to do base 10? It's all arbitrary.

>>7779247
Because fuck it, I made up a base 16 number system when I was little because I was bored. It has absolutely no effect on anything.

>>7779256
You actually want the number to be as composite as possible, senpai.

>>7779201
If P = NP then that means problems that were before non-polynomial can now be solved in polynomial time. This has huge implications on cryptography in particular because modern day cryptography is based on prime factorisation which is currently an NP problem (a problem that cannot be solved in polynomial time). If it was proved that P = NP then these forms of cryptography would be "broken" and big problem would follow.

>>7779201
it's obvious that you open the thread with something interesting that you may or may not already understand just so you can hide you homework question in the end

fuck off

>>7779215
i read that and it seems silly because the algorithms required to break cryptography wouldn't magically appear out of thin air just because we've proven them to exist. or am i wrong about that?
>>7779217
k

>>7779069
Bump for interest.

>>7779696

There's very little published genomic data from Australians at present. Intredasting that the best fitting models were all Papuan + SE Asian. were there migrations into Australia that bypassed New Guinea?

>>7779069
>23andMe

Aren't those guys frauds?

>>7779038
I had the highest grade in my English class actually.

>>7779038
Writing a scientific paper on a topic you love is a whole lot different from writing a paper on some socialist propaganda in the form of a book which was shoved down your throat by a cultural marxist professor.

>>7779044
thanks for sharing

Probably not.

YES

>>7779033
gnorts pls.

>create

different notation at the least

>>7778994
>Or, if the comments on NASA's facebook-page are true and space is just a carped made by the government to fool us for some reason and rockets dont work in vacuum, what will happen?

>no satellites have ever been launched before.

>>7779059
i shit you now, those comment sections are full of people rambling on about how everything from how Apollo was fake to the Van Allen belts being gods way of stopping people from leaving.

>>7779068
And with an amazing amount of crappy English/spelling as well.

It's actually very complex, but microorganisms are too good at adapting.

>>7778993
>Giving personality traits to what is literally a process.

Go back to /b/, someone already got the get. You can leave now.

>>7778998
No, I'm saying why is it so fucking stupid it attacks the body like ALL of the time?

I have several autoimmune diseases and holy shit evolution sucks if it can't figure this shit out.

depends on what are you scratching ? :^)

Keep scratching until you hit that black gold.

First you must create the universe.

OP here, about the question, more detailed question: Why dont the stars become white dwarfs or neutronstars?

From what I've read, it needs to be a star several magnitudes larger than our sun with a massive amount of Iron at its core. This contributes to a point of density and describes an incredibly high pressure core during the super nova that can collapse into a black hole.

Our sin cant do this and in a few billion years, will die a white dwarf.

>>7778769
White dwarfs do become neutron stars, which are stabilised against further collapse by degeneracy pressure. However a white dwarf 3 times heavier than the sun will always collapse into a black hole (cf. Tolman–Oppenheimer–Volkoff limit).

>>7778741
>Just build a mega mountain that reaches to or past the Karman line.

Material science isn't simply there to build such an object.

Carbon nanotube production is still in its infancy. Metallic foams and programmable buckyballs is, again, still being worked on.

And despite ambitious attempts by billionaires to build arcologies, we don't have anything taller than what's sitting in Malaysia. We don't have best building practices down yet.

Such arcologies, pyramid buildings, etc won't be around for a very...very long time.

Aside from that, theoretically it is possible to build such a structure, if we had the right building materials.

>>7778793
>Material science isn't simply there to build such an object.

It is. You literally just pile shit up in the form of a giant mountain. The real problem is that it will sink. That is, make the entire Earth's crust sink in that spot. The more you pile, the more it sinks. The only way for it to work is to have a completely cold core in the Earth and everything be solid under the crust. You'd always end up with a Mount Everest-sized tip sticking up out of the crust regardless of how much you built. With light weight, strong materials you MIGHT get to 35km.

Two problems:

1) We can't build anything remotely that high. The square cube law (the same reason an ant can lift many times its own weight and you can't) applies to structures too. Mount Everest is already pretty close to the theoretical limit for how tall a mountain can be without collapsing under its own weight. That's why planets are round in the first place! If you built it out of some exotic material you could get higher, but not THAT high.

2) Even if you could, it wouldn't make space travel easier. Getting to space is about moving fast, not getting high up. That's what almost all the fuel us for. If you launched from that high up you would save SOME - but first you'd have to climb an impossibly tall mountain...

cut it off

>>7778740
what the fuck is that?

and yes, there are drugs which suppress testosterone production, which will make you sterile, amongst other things

>>7778777
>what the fuck is that?
Colostomy. That's what you intestines looks like when sewed to a hole in your abdominal wall.

>>7778592
gib context pls

>>7778619

People come on here all the time, ask for advice and get told they need IQ x to do y by some troll and they accept it.

>>7778592
Clarkson is obviously very intelligent I don't understand what point you're trying to make. Acting like a Jester is literally his job and he does it well.

>>7778241
>Why do people used odds instead of probabilities?
>people

You mean Americans

>>7778242
Unfortunately they use it here in the UK as well for betting.

>>7778245
don't bet

Are you fucking retarded.

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>>7778158
Either you are retarded or this is bait

Pursue an undergraduate degree in biology. If a school by you has an actual degree in botany, go for that. Take upper level plant biology courses and try to engage in some kind of plant research while there, if possible.

Pursue a PhD in Plant Biology, or another field of biology, using plants as a model system or an organism of interest.

You're welcome.