Archived threads in /sci/ - Science & Math - 512. page
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What pen/pencil and notebook does /sci/ use?
Also, pen thread.
I use pic related and some cheap dollar store ruled paper.
>>7748994
>Waterman expert fountain pen
>Either some puka square ruled paper
>or a hard backed, square ruled notebook if I can get them.
Just use supply provider free pens and cheap notebooks
![Scriva-Kugelschreiber-DJ88_dj88_051745_A051745_01[1].jpg](https://i.imgur.com/T1grlOk.jpg "Scriva-Kugelschreiber-DJ88_dj88_051745_A051745_01[1].jpg")
>>7748994
scriva dj 88 inferior race
I don't write all that much anymore, there is almost nothing to write
>inb4 >>/k/, >>/lit/
So. What I'm thinking about using as a plot device for a /sci/ intense and /sci/ driven plotline is a computer attack that an Amperage moderator, actuated by a semiconductor circuit, was inhibited/disabled/destroyed by a malware attack from either the equipment's internet integration or within the most recent firmware update by a hostile foreign party against a fighter plane's internal fly-by-wire electronics.
This loss of amperage moderation caused, upon reboot, the timing Resistance-Capacitance...
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>>7748895
Who's this semen demon?
>>7748960
I don't remember. A name I remember is something like "Lisa" or "Rena" but I'm shit at that.
Just reverse-image search it next time.
>>7748895
I am no EE, but it sounds decent to me. But I thought voltage spikes were more dangerous to most setups as the large potential can make the power surge in unpredictable ways (i.e. jump to place it shouldn't be) and the smaller more integrated circuits only need a small fraction of an amp to fry which is why newer stuff is so EM sensitive. The smaller the transistor the faster and more efficient, but the less it takes to fry.
There are lots of ways to break hardware with software, despite all the modern safeguards. What is the goal of this breakdown? And what is the setting?
On a cool side note, I knew one of the electrical material engineers that got called in for the US mass ICBM failure, and he helped save the day. Apparently running the ICBMs on high alert standby for years wore out some of the capacitors, which lead to many circuit failures in the ICBMs. When a good chunk of your nuclear arsenal suddenly stops working you can understand why the Pentagon secretly panicked during the cold war.
Something as simple as using the same batch of capacitors beyond their life expectancy nearly triggered WWIII. With some new capacitors they quickly fixed the ICBMs once they figured out what caused the mass shutdown. There was a near two week window when nearly half the ICBMs didn't work, plenty of time for something interesting to happen (thankfully nothing really did).
Can anyone tell me how to form a speed into the therefor needet force?
W-what?!
>>7748649
holy shit anon
>>7748649
Has Anyone Really Been Far Even as Decided to Use Even Go Want to do Look More Like?
That scene at the end.
Why was he smacking his wound?
Wouldn't that retard the clotting?
Dark force powers are powered by anger, fear, pain, sadness, and strength. He was doing it to amplify his power. Or alternatively doing it to distract himself from the pain.
Physically agitating his flesh excites the midichlorians, read a book
Why do gorillas smack their chest causing damage to their hearts?
Hey /sci/ any tips or resources for an amateur chemist?
Get a degree and then a job as a lab assistant.
>>7748444
Johnny was real thirsty
Now Johnny is no more
For what he thought was H2O
Was H2SO4
>>7748444
don't do it, you'll either kill yourself or kill someone else
What are the technological hurdles to building a real light saver and how can we overcome them?
>>7748371
>Lightsaber
fuck you Steve jobs
A guy already made a very weak one http://todayinawesome.com/blog/2015/12/17/the-guy-who-made-a-real-mjolnir-is-back-with-a-real-lightsaber
>>7748382
That's an overdriven laser diode, I would hardly call it a lightsaber
When does math become Ivory Tower bullshit?
>>7748331
Is that Paul Sally?
I only know him by the little cartoon he draws at the end of his proofs.
He died before I got to Uchicago.
I don't think math ever becomes Ivory Tower bullshit, but then again, I don't think any pursuits that contribute to human knowledge are wasted efforts.
>>7748331
As soon as the word "pure" applies to it.
Pure mathematics has never given us anything useful in real life.
>but m-muh number theory for cryptography
Until computer scientists and APPLIED mathematicians started using it to break large-bit ciphers, number theory was just jerking off to taxpayer money. Even now, the best number theory work comes from cryptographers.
>>7748331
>americans in charge of being classy
/o/ here
I have a thesis
would this work?
"We chop off
the back end of a coupe
everything after the rear window (that we can)
so basically the entire trunk section
it would decrease weight significantly
add aerodynamics
through these things
handling, speed, and quickness are improved
is it possible to move the gas canister closer so we can chop off more of the back end all the way to the rear wheel?
by doing this we could create the ultimate track car
i am using my car, a BA4 Prelude as visual aid"
would it not...
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>>7748313
"picture the CRX back on a honda prelude, only it does not open into any compartment, it is just a back. surely by the virture of the stock horizontal bar and also not needing to open it is more rigid
the car's weight is more on the front now too, but this is only phase 1, there is more we can do to the prelude
we have lost a lot of weight and unnecessary space on this prelude by doing this
people make carbon fiber trunk tops
fuck that thats stupid"
i think its solid
concept art drawn up from a designer at WAT
Hey, /Sci/, I have a question (inb4 gtfo this isn't /adv/). If I were to major in physics, would I be screwed career wise even if I went to a great uni, had a great GPA, and started researching/interning ASAP?
>inb4 just do engineering, faggot1!1!
>>7747820
just do pure math for 300k starting. faggot.
>>7747825
Nice meme, friend. How many gbp did you get for it?
>>7747820
why do you want to major in physics?
>When they were born and evolved the first supermassive black holes in the universe?
Astronomers from Tel Aviv University (TAU) identified when there was the cosmic era of the first black holes of rapid growth in the history of the universe.
In general, the galaxies in the universe, including the Milky Way, host supermassive black holes, ranging in mass from one million to 10 billion times the mass of our sun. To find them, astronomers look for huge amounts of radiation emitted for gas during the periods in which the black holes remain...
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bump. intetesting topic
>>7746132
Some basic questions to phy/sci/sists:
What are the smallest minimum dimensions of a black hole? Specifically radius and mass. Feel free to give multiple models of these if they exist (Hawking vs. Thorne vs. others)
Is there any sort of maximum on these dimensions, for a black hole?
What's the deal with spinning vs. not-spinning? How can a body not have some "spin" going on?
Has a black hole ever been photographed, or has a real photograph/movie of any region of space...
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Due to expansion the earlier in the universe a black hole forms, the more matter it can bring into itself and can become larger much more quickly.
>the speed of light is independent of the movement of the light source and/or the inertial frame of reference of the observer
This is the most counterintuitive thing to me. Obviously I accept it as true and I can kind of wrap my head around it, but it still just bothers the fuck out of me.
>>7745565
>>7745565
Picture the Dopplereffect. Even on a moving source the first wave front won't arrive faster at the destination, but it will cause the wave fronts to become shorter/wider depending on your view causing a blue or red shit.
From the perspective of the light source of course no shift at all happens
>>7746060
Well, I see what you mean, but it doesn't really help. I get how the doppler effect applies to both sound waves (an ambulance driving past) and light (blue or red shift). But doppler effect is wavelength, not speed.
For example, your gif is showing doppler effect of sound waves propagated by the car, and unlike light, sound waves are not independent of movement of the source or the observer. This is show in your gif by how the sound wave arriving at the right hand side arrive fast when the car is standing...
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Is it possible that some people aren't self aware but blend in with the rest of us?
Pic related
I mean some people just seem like vessels for propagation of memes, it seems like they have never in their life stopped to reflect on what they are doing or why they are doing it, which stands to reason that they may be completely self unaware.
Has there ever been a study which attempts to measure varying levels of self awareness, rather than just being a thing that you either have or don't have?
Research in to AI seems to suggest that self awareness is not necessary in order to pass as human.
>>7744511
yes, because most of us aren't self aware most of the time imo.
![photo[1].jpg](https://i.imgur.com/AbRUzFH.jpg "photo[1].jpg")
Is it too late to be saved from global warming?
>>7750350
Global warming isn't going to kill humanity, just a bunch of humans. We'll do just fine in that regard, there are far worse things to be concerned about - not to say we shouldn't address it.
>>7750351
Good point. Do you think this will increase the gap of superpowers and impoverished nations? Do I have to worry about America's dominance ending? I've heard the bread basket will no longer be as fertile.
Also, what's the best area to live and buy land with my mind on the future? The South will be underwater and fucked by increasingly strong storms. Should I move to the midwest or the west?
Global warming will happen regardless. Id be more worried about the next resistant super virus if i were you.
Why does /sci/ refuse to acknowledge the huge disparity in university quality? You get topics filled with people talking about their grades in Calc 1 and Calc 2 etc. You may as well talk about how long pieces of string are. Places like MIT do Calc 1 to 3 in two courses any way. And still have more content. And Caltech does proofs etc on day one. And that's just the disparity in two maths courses. Now imagine four times that difference every year because there are 8 courses, multiplied by four for every year of the degree, multiplied by being surrounded by smarter people...
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>>7754775
My public university has an analog of Math 55, Harvard's super hard, super respected class. It's two semesters of Calculus on Manifolds, plus a bunch of other high-level stuff. I showed my textbook to a grad student who studied at a UC school and he replied "this is shit I don't even know." After my freshman year I can take senior-level and grad-level classes.
Moral? Maybe everyone at MIT gets a good education, but one can get an MIT-level education at a lot of places other than (OP...
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>>7754787
What school is this? Sounds interesting.
>>7754793
I won't say what school exactly, but you'll have to trust me that if I were to tell you, you'd most likely be surprised. It's not a recognized top tier public school (UC, Michigan, William and Mary, etc), but it still has great programs. Not trying to brag about my school ( even if that's what it sounds like), just trying to emphazise that Harvard/MIT/Caltech quality students will find ways to give themselves top-tier level educations regardless of where they go--which is the opposite of what...
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![Fooducate-Grades[1].png](https://i.imgur.com/1hSESMt.png "Fooducate-Grades[1].png")
1 (800) 273-8255
National Suicide Prevention Lifeline
www.suicidepreventionlifeline.org
It's that time of the year /sci/. What grades did you get?
>>7735501
Yearly reminder that anything short of all A's is a disgrace
B+
A
A
Which is about par for grad school.
That last grade was shortly an F before I called up the prof and informed him that my final had been in his email for a week.
>>7735501
I like you OP
