Archived threads in /sci/ - Science & Math - 1971. page

>>7790420
Difference in cost is HUGE, they use cordite a lot too now.

>>7790420

The strength of a reaction using petrol would be limited by how much oxygen you could get to it. As gunpowder comes with an included oxidizer, it doesn't have this problem.

>>7790420
Why are they measuring in volume (teaspoons) instead of mass?

%200 scientific

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http://ghostadventures.wikia.com/wiki/Best_Evidence_(episode)

>>7790418
Ghosts were confirmed with quantum theory.

Ghosts are just spooky manifestations of the randomness of quantum particles.

Like, when you see a ghost move a chair, it is just that the quarks that made up the chair randomly decided to all spin to that direction at the same time, creating a net force that moved the chair to that direction.

'Ghost Busters' are actually Applied Particle Physicists who visit people's houses to calm down the quantum fields there and also study them so that maybe one day they can comprehend all the spookiness.

It's a meme. Don't bother.

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>>7790416
>SETI
>Settee

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>>7790416
>he thinks he can find ayylmaos

>popsci
literally fuck off

> theories meet theories to create more theories which have nothing to do with science or reality.

We should have a separate board called /pop/ so we can eliminate the %80 of the non-sci threads posted on this board.

>>7790393
>>7790395
or we could have one /popgeneral/ and we would achieve a pretty good containment

the butt is real

>>7790368
4chan tip #69
-If you intend for your post to be taken seriously, never attach an image with better tits than your post.

With that out of the way...

Who is this semen demon?

>>7790380
The Facebook link is in the filename, I pulled it from some cosplay page maybe a year ago

>>7790303
I was once tested too high on B6. No symptoms experienced at all. You will probably need to get downright insane doses like triple of what is considered normal amounts of B6 to attain seizures.

>>7790195
bump

>>7790195
>so randomness stems from randomness?

Truly a deep conclusion that you must have spent years, NAY, DECADES constructing. You are definitely, the einstein of our time. A genius to rule over everyone else. Please apply to MENSA and CERN right away, humanity needs GREAT THINKERS like you at the top of the pyramid.

>>7790456
>pithy straw man
Ayy

>>7790190
I don't understand what you're asking. Can you explain in more detail?

Reading through these lecture notes might help as well.
http://arxiv.org/abs/0804.3434

>>7790221
I want to input a lambda expression as a lambda expression, and not as what it outputs.

An equivalent with traditional mathematical functions would be this:
Inputting a function as it's defined using set theory, instead of just inputting its output.
For example, the function f simply inputs the result of g here: f(g(x)). What is desired is to input the definition of the function - its domain, range, and all the tuple mappings between the two.

>>7790245
First of all, in set theory, functions are actually just sets of ordered pairs.

For instance you may have a function
[math]f=\{(1,a),(2,b),(3,c)\}[/math]
Then saying [math]f(1)[/math] actually means you're evaluating [math]f[/math] "at" [math]1[/math]. In other words, [math]f(1)[/math] is not a function, it's just an element of the co-domain. I.e.
[math]f(1)=a[/math]

So writing something like [math]f(g(x))[/math] is just f evaluated at "g evaluated at x". If you do this element wise then you can produce a new function that is the composition of the other two but formally this is subtly different from evaluating one function on the output of another one.

All that said, if I understand you correctly (I'm honestly not sure I do because I find your explanation kind of strange to be honest) what you want is to write something like

(\g \x. f (g x)) G
where G represents the lambda expression for the function you want to evaluate x on before feeding it into f.

>>7790133

If you're embarrassed about having a lazy eye, just get the surgery to straighten it. It's a really simple procedure.

As to your question, the eye would be fine if you didn't use it for years, in fact it might even be better off without all that wear and tear.

>>7790133

It probably wouldn't be an issue. If you were to do something like this as an infant it could result in an underdeveloped primary visual cortex but if you're older than that you shouldn't have any permanent deficits.

>>7790133
Yes it would cause problems.

Your brain would learn to do everything with one eye only and when you open your eye up again after the year it would have to re-learn a lot of things again.

Try it and document your findings for science m8.

>>>/r9k/25812133

>>7790061
>PTSD
Well the VA spent $700 million prescribing anti-psychotics for PTSD over 10 years and concluded they don't work.

>depression
fucking lol, anti-depressants are no more effective than placebos for the vast majority of patients. See Irving Kirsch.

>anxiety
benzodiazepines are tried and true but habit forming

>insomnia
ambien and lunesta work, but are not magic bullets w/o side effect

>>7790070
r9k a shit
post rare elliots

>>7790061
>I'm writing a character who's suffering from depression, PTSD, insomnia, and anxiety.
>What kind of medications would normally be prescribed?
Murder/suicide

if it was an explosion, like a bomb, the universe wouldn't seem symmetric from our point of view (except if we were at ground zero)

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It expanded in a bell shape.. hence the pic.
Our universe, is right now sitting at the end of the 'bell' edge on.
The current state of cosmologay is a little tragic with memers like Tyson and Cox, so that anyone studying it is referred to as a 'bell-end' in an affectionate manner.

>>7789933
A prestigious program means

-Good networking opportunities
-Big companies directly recruit from that school
-Good opportunities to learn cutting edge stuff
-Good equipment / labs / etc.

You can turn all of that into higher pay and better opportunities, if you're not a moron, but it's up to you to do the work.

Also note that I do not say "good classes". In a research-focused university, which is what the prestigious ones are, quality of undergraduate education is sometimes a secondary priority.

>>7789887
Nigga
https://en.wikipedia.org/wiki/Orion's_Sword
>The Orion's Sword is an astronomical asterism in the constellation Orion.
>It comprises three stars (c, Theta, and Iota Orionis) under the prominent asterism, Orion's Belt.
>M42, the Orion Nebula is located in the center. It points in a southerly direction, and resembles distantly a sword.

Lota Orionis is Hatsya https://en.wikipedia.org/wiki/Iota_Orionis
M43 is some emission nebula https://en.wikipedia.org/wiki/Messier_43
M42 is the Orion Nebula
Theta (Orionis) is a collection of objects https://en.wikipedia.org/wiki/Theta_Orionis
and c, well it's just a star https://en.wikipedia.org/wiki/42_Orionis

Wikipedia, yo.

>>7789887

Lay off the drugs homie.

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>>7789935

THAT TELLS ME VIRTUALLY NOTHING, BESIDE, THE INFORMATION IS SELFCONTRADICTORY; IT TELLS THAT "ORION'S SWORD" COMPRISES THREE STARS, THEN YOU PROCEED TO NAME FIVE OBJECTS.

ALSO, ODD THAT THERE ARE NO DEPICTIONS, OR PHOTOGRAPHS OF "c", AND "THETA ORIONIS".

1. I WANT TO KNOW WHAT ARE THE NAMES OF THE OBJECTS IMMEDIATELY IDENTIFIABLE FROM EARTH'S SURFACE WITHOUT IMPLEMENTS.

I AM NOT INTERESTED IN SCHOLASTIC CONSTRUCTS/FABRICATIONS, OR IN ALLEGED OBJECTS.

2. WOULD YOU IDENTIFY BY NAME THE OBJECTS COMPRISING "ORION'S SWORD" AS SHOWN IN THE IMAGE ATTACHED TO THIS POST?

They would lose their conductivity and in turn magnetism since heat increases resistance

>>7789874
My research is actually on ferromagnetic and superconducting interfaces, particularly F/F/S, so what you're describing sounds familiar as a classical spin valve.

See each magnet has a preferred spin orientation, giving them their magnetic field. Thus when a current is ran through a magnet, not only is charge being transferred but the spin is as well. When current runs from a normal metal into a magnet, spins matching that of the ferromagnet will pass through with ease but the opposing spin will either reflect backward (losing net current) or will flip spins. This means that current with the same spin as the magnet will have less resistance than for the opposing spin.

This comes into play in designing a spin valve. Here, you use two ferromagnets, the first being "hard" so that you can fix which spin is preferred, the second being "soft" so that you can control the resistance. By changing the soft's magnetization from the same direction to the opposite direction of the hard magnet, you can GREATLY increase the circuit's resistance. This is very useful for things like memory where you want a definite on/off state.

Of course if you run it too high or too hot, the above mentioned demagnetization will occur.

>>7789897
Thanks for your answer.
Now if you'll excuse my ineptitude in the subject.
Would you care to explain what you wrote in a way easier to understand for someone not versed in the subject?

Also, lets take this variation of the setup.

Magnets set with poles that repel, facing each other.
Low voltage, high amperage positive current run through both magnets.
What would happen?
>I would be actually doing the experiment if I had the materials

>>7789847

Evolution
>sex, food, and time
Electricity
>arrows, dots, and squigglies

Flight
>more fucking arrows

Light
>squigglies, arrows, and dots


Time
>fuck you

>>7789847
realize I don't speak a lick of medieval italian, let alone modern italian and starve to death

If I merely get sent back in time without my location being moved, I die in the vacuum of space. If I get sent back in time with me having the same location w.r.t. the earth, I'm in a very sparsely populated area of north america and I'm probably going to die alone.

>>7789870
looks like you're going to die, sorry anon