Archived threads in /sci/ - Science & Math - 461. page
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>A spaceship traveling exactly at the speed of light jettisons a smaller craft ahead of it from the front of the ship
Would the larger ship be pushed back or would the smaller craft not move forward at all?
you cant move at the speed of light so the question is void
>but what if the spacecraft was 1 m/s less than the speed of light and shot a spacecraft out at 2 m/s
what is time dilation
what is relativity
>>7779845
Everything is relative. So to observes on both ships, who are not travelling at light speed relative to each other, everything behaves normally.
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>>7779849
yup.
Meaning: You are jettisoning the craft forward meaning the added bonus of moving it forward from your light speed craft it would be going just slightly faster adding the momentum to put it out the front docking bay.... if the Craft slows down slightly it will hit the ship behind.. so generally a good idea to speed up out of it and away from the other ship...................
Yes you can.>>7779847
ITT: We pretend to be transhumanists.
I'll kick it off.
In the future, technology will stop being physical. Moore's law tells us that computer power will eventually be infinitely large, so that means that we'll be able to hack the universe. Goodbye supply shortages!
i have a design for a von-neumann space elevator, which can create a web of space elevators traversing the galaxy
>>7779795
BAIT
Moore's law IS NOT A LAW
is even worse than hook's law
Here's a question which I'm sure will get many opinions /sci/.
How does one go about understanding something that is not intuitive?
If it is intuitive, then that something would be easy to understand.
If it is not, then a certain series of steps must be taken to read the point of understanding.
How do you in particular do it /sci/?
>>7779786
reach the point of understanding*****
>also pic unrelated -- logic gates
Run through a few examples to see the result. Try some outliers to see how intuitive case would necessarily have to fail. Ref. UV breakdown and QM: the classical approach would simply be wrong and intuitively be wrong.
You just keep studying it and deal with it. Most things in life are this way.
I'm a chem grad from outside the US looking to get into a US uni for my ph d. How proficient with the use of analytical instruments (gcms, hpkc, aas, uvvis) am I expected to be to work in the uni? Ilve sadly only been able to handle each of instruments about once per class and the rest of the time we had a lab tech actually running the tests.
Can I expect them to train me to use the instruments as a grad student?
Also, while I'm at it, anybody have the link to library genesis that has scientific documents?
>>7779783
lol, yes someone will train you b/c the rest of the group doesn't want you to damage the instrument.
Usually each member of the group has a 'group job' meaning a particular person in charge of each instrument.
>anybody have the link to library genesis that has scientific documents?
I thought they got sued and had to take it down.
>>7779796
Whew thanks. That's a relief.
Lib gen had several different urls. One still had links to academic papers. I had it on my comp which is currently in service and it was still up last I checked which I can't remember when.
>>7779783
Do you need a Phd to get a Chem related job like you were a Psychology student? (i.e cant get a psychologist job with just Bachelors)
Hey /sci/.
What are the consequences of Bell's theorem?
If someone could explain the testing process aswell that would be nice.
>>7779758
https://www.youtube.com/watch?v=ZuvK-od647c
taking this course, pic related, this semester. haven't ordered the book yet though, but it's a new course that's offered at my school with the author as professor.
anyone have any background in this? it sounds cool.
here's the syllabus for the class: http://chemistry.fas.nyu.edu/docs/IO/19766/Chemua382.orgoIII.seeman.spr2
>>7779713
No access to the server, just copy/paste the syllabus.
Also, very neat, OP. I can't vouch for the professor, personally. So I wish you best of luck in your endeavors.
>>7779743
my bad
http://chemistry.fas.nyu.edu/docs/IO/19766/Chemua382.orgoIII.seeman.spr2015.pdf
what year/major are you op this is the shit I want to get into after taking organic
Hello /sci/
I know this is probably not the place to ask for advice but I have a big decision to make regarding my future and you're the audience I would like to get opinions from rather than /adv/.
Basically, I've finished high school 3 years ago and I've always done fairly well in school, especially in mathematics and general science/logic/problem solving areas. However, I've yet to do anything productive or challenging ever since. I started backpacking and been travelling the globe for years now financing myself with mundane labour and service...
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>>7779694
Fair enough. I'll stick around for a bit longer anyway someone might be having a good day and feels like helping me out.
>>7779688
If there were such a thing, everyone would already be doing it.
Also,
>I'm most interested in programming
>within 1 year of self study
>I'd plan to study at least 2 hours a day on average
The bottom end of the software and services job market is absolutely saturated with people more trained than that. They're the ones who keep bitching that it's impossible to find a software job right now. Forget it.
Hello friends,
I am a 30+ lawyer who recently found I hate law and passion for fundamental physics and cosmology. It will take another year or two to bring my maths to the level necessary to complete a physics degree. What would you do, continue with law or take a leap into science?
Every lawyer I know wants to kill himself.
I'd kill to be able to get my maths to that level and to be able to pursue anything to do with physics.
>>7779687
>Hello friends,
>I recently saw a few pretty graphics of space stuff and I have a passion for physics now just like you :^)
Stick with law. Watch more pop. science instead. Astrophysics isn't hiring anyway.
That's tough OP. Its amazing how we are seduced into doing things we hate just for money, even in this world of abundance we live in.
I'll put this simply for you OP. Your final thought on your deathbed will be one of deep regret if you remain a lawyer.
Cetaceans have been observed to have traits such as self awareness, tool usage, emotional complexity, and advanced social structures, as well as the possibility of language in some dolphin species. How can humanity benefit from their intelligence, and can they benefit from ours?
there were various account of people having intercourse with dolphins. apparently it's awesome.
>>7779671
ken ham is an expert in cetacean sentience
>>7779906
I guess that would actually be creation science, not cetatean sentience now that I think about it
Does willpower exist?
And is even venturing to put forward a mechanism / foundation for how it works far beyond our current knowledge? (i.e. is it completely binary whether your willpower is working or not; or is it something that depletes or increases depending on other things like a health bar in vidya?)
>>7779517
>Does willpower exist?
yes
>>7779517
>something that depletes or increases
I can't be bothered googling it, but I can recall a study exactly on this. The conclusion was that your ''willpower'' defined as your ability to make decisions and do things throughout the day does, in fact, deplete.
Well parkinson's is often called the "paralysis of the will" because motivational factors like hunger fail to cause them to initiate movements
It was found on Henares river in Spain, but seems like some kind of south american fish, a "giant corydora" i've never seen something like this before
Abomination fish from hell
>>7779428
Looks like a striped raphael catfish (Platydoras armatulus)
>>7779428
this looks like a very ancient species.
living fossil desu
source: i read a lot of scifi
/sci/, how do you cite e-books within text (not PDFs but actual epubs)? In particular, using this approach: (Author 2016: X), where X is a page from the book. Can I substitute that with a kindle location number? Should I convert it somehow to the actual page number?
Lmgtfy.com/how+do+i+use+latex
What language should I learn for Mechanical Engineering? For software development? For AI / al gore rhythms?
>>7779257
MATLAB, Java and Lisp, respectively
>>7779257
>>7779257
Did you like pure mathematical logic? ie, predicate, propositional, modal logics?
Do you like, and are familiar with a lot of mathematical notation?
If you answered yes, find a functional language like a LISP or Haskell that suits your needs.
If you answered no, hop on the bandwagon and use python. This is for AI of course, and that's basically the only one you have a choice with. Mechanical engineering(unless you are doing it yourself,...
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stata and matlab
Easy quantum physics.
If wave encounters a finite well does some part of incident wave reflect back on the edge of well ?
>>7779246
A potential well, or an actual physical well?
>>7779248
Sorry for not being clear enough, potential well of course.
EE student here
this always puzzles me
I understand that the field on the left is strengthened and the on the right side its weakened. the result is a force
but why? does the field try to distribute itself evenly again?
That's just a basic principle of physics. Without going deep into Maxwell and stuff,
Everything in physics "wants" to reach the lowest energy state, a state where no work is done.
The force exists to distribute it evenly again (= lowest energy state) just like you said
