Archived threads in /sci/ - Science & Math - 599. page

File: terraform.jpg (914KB, 2000x2000px) Image search: [Google]

914KB, 2000x2000px

How much time will it take to fully terraform Mars with nuclear weapons?

Is it worth it?

File: spectra.jpg (42KB, 524x402px) Image search: [Google]

42KB, 524x402px

How can I statistically compare these lines?

I've been struggling with this for weeks, but I know its a basic question and just don't know the correct terms to google.

I basically , I have several ‘lines’ on a line chart, each representing what is known as a ‘spectral profile’ for different plant species.

What I am hoping to output, is some sort of quantitative value, that can outline how ‘unique’ these profiles are from each other.

I've been told PCA but that isn't making any fucking sense.

File: 51IpCroaqVL._SX329_BO1,204,203,200_.jpg (43KB, 331x499px) Image search: [Google]

43KB, 331x499px

I've extended my PhD already by 3 months to write up. I am overwhelmed by writing and report writing in general. I feel like I'm average-above average intelligence and a good researcher, but I can't put my thoughts on paper. moreover, I feel like I don't have an extensive vocabulary, and spend far too long looking for thesaurus alternative words. anyone with experience getting a PhD done during the final stages?

File: alarmedpepe.png (102KB, 241x228px) Image search: [Google]

102KB, 241x228px

https://www.youtube.com/watch?v=-wny0OAz3g8

>The idea that race itself is a purely biological immutable quality is also understood today as being simply untrue. Instead race is thought as a socially constructed category of people, who share biological traits that society has deemed important

>Human beings vary a lot in how we look, our skin color, facial features, body shapes, hair textures, but those visual markers only become a race when members of society decide that specific markers constitute a specific racial group.

What did scientists mean by this?

File: 1492969158008.jpg (3MB, 1712x3841px) Image search: [Google]

3MB, 1712x3841px

Beforehand, you may freely flip a coin as many times as you want.

Will flipping a coin until it lands on heads 5 times in a row increase your chance of landing on tails in the real coin toss against me?

File: There_must_be_more_to_life.png (1MB, 746x718px) Image search: [Google]

1MB, 746x718px

If you have any understanding of epistemology, you'll know that absolute knowledge is impossible.

Here's why:
1.Either all of physics are infinitely regressive, particles within particles within particles etc, hence not anchored in any solid way
2.Either it's somehow circular, thus not anchored in any solid way
3.Or all of knowledge hangs on some random/weird type of phenomena

There's nothing else, all of science, no matter how rigorous or how far into the future, is just an approximation.

>muh rigor
kys

File: poynter1.jpg (78KB, 960x639px) Image search: [Google]

78KB, 960x639px

"Why do I have to learn Algebra if I never use this in real life?"

What do you say?

File: 18073407_10155203636244761_905295692_n.png (38KB, 428x470px) Image search: [Google]

38KB, 428x470px

<- this ad popped up on the side of facebook

Is it actually solvable or is this just some clickbait? I can't figure it out....

File: 10_out_of_10_would_protect.jpg (43KB, 1280x720px) Image search: [Google]

43KB, 1280x720px

If you love science, why didn't you go to law school and become a politician?

Nuclear energy won't be getting off of the ground anytime soon.
Fossil Fuel cronies are lobbying the fuck out of the government and its working.
Green? What is that.

Evolution, STEM cell research/cloning and similar activity with genes is being attacked by religious folks

Most importantly, your precious precious funding is in constant danger in top public institutions such as Georgia Tech etc


If you claim to love science, why won't you protect her and go to law school instead anon?

File: IMG_4285.jpg (80KB, 649x433px) Image search: [Google]

80KB, 649x433px

Sigmund Freud postulated that men compensate using a strategy whereby one covers up, consciously or unconsciously, weaknesses, frustrations, desires or feelings of inadequacy or incompetence in one life area through the gratification or (drive towards) excellence in another area.

Thoughts on this statement /sci/? Is this why /sci/ is obsessed with calling people "brainlets"? Non biased answers only please.

>inb4 m-muh psuedoscientist

File: biggest rocket ever.jpg (44KB, 519x617px) Image search: [Google]

44KB, 519x617px

This rocket was designed to lift the same payload to LEO as Musk's rocket (550 tons)
https://en.wikipedia.org/wiki/Sea_Dragon_(rocket)
It flopped. Therefore Musk's rocket will flop too.


SpaceX BTFO.

File: 1475326706301.jpg (70KB, 600x800px) Image search: [Google]

70KB, 600x800px

I'm programming something that needs super efficient collision detection, and figured that rather than checking collision per-frame, I could use the velocity and acceleration of objects to create parametric functions that show when and if those objects collide.
However, it only works for collisions of spheres, because I'm finding when the distance between the spheres is r1+r2..

I hear there's similar stuff that works for non-spheres, can someone educate me on this?

File: math oracle.jpg (99KB, 640x640px) Image search: [Google]

99KB, 640x640px

Post your questions that don't deserve their own thread in here.

Tips for good questions:
>provide context
>check stackexchange first
>if stuck half-way into a question, show your work so far

Previous thread:
>>8841139

File: graviton.png (135KB, 300x225px) Image search: [Google]

135KB, 300x225px

How to discover a graviton?

File: mars.jpg (9KB, 289x175px) Image search: [Google]

9KB, 289x175px

Bill Maher segment on improving Earth and stop chasing that idiot Martian dream:

https://www.youtube.com/watch?v=mrGFEW2Hb2g