In the book "The Martian" there is a scene which amounts to the main character being trapped inside a box which he want to move relative to outside (a level surface). He achieves this by jumping in the air and kicking the box. He then refines this by just jumping and slamming his back into the wall. Would this work? It seems like trollscience and I'm not sure about the momentum situation?
how much mathematics by European and American mathematicians were discovered by Asian mathematicians a few years earlier? I know Bernoulli and Cramer were outpaced by Takazaku (you could even argue that he discovered the Newton-Raphson method before Newton and Raphson did), but was there anyone else?
THIS IS NOT a homework question, just something I would like for you guys to help me solve for fun and pic not related, I needed a pic.
Hey /sci/, I have a question that should be easy enough for you guys to solve. I know Its against the rules but I really need this question solved.
Holly Woods is a popular actress and Joe Fish is an up and coming young comedian. Joe has an income which is five-eights of holly's income. Joe's expenses are one-half of those of Holly's income, and Joe's saves 40% of his income
Determine... Comment too long. Click here to view the full text.
how do you guys make math interesting or actually like, I'm currently struggling with it because unlike other subjects I only learn because I have to, in other subjects sometimes I even learn topics ahead of time or some that I don't have to learn just out of interest or curiosity. help me /sci/
No really. The pleasure of math is somewhere between a really complicated puzzle where all the pieces click into place once you solved it, or like an OCD person who will only feel comfort once he clicks the right and left sides of his mouth with his tongue just the right number of times.
The public key is used to encrypt a message. Only the private key in that public/private key pair can decrypt messages encrypted with its public key.
You and Lucy would each have your own keypair and keep your private keys secret. You would each use the other's public key to encrypt messages and use your own private key to decrypt messages sent to you.
hey /sci/ i had a little project where i have to teach people basic cryptanalysis, figured i'd share here:
-- Howdy! In this thread, we'll be learning to crack some very basic 17th-century level ciphers. The point is not that these ciphers will help you in your day-to-day, but that they'll give you a more technical understanding of what's happening beneath the hood when you're cracking wifi passwords or using PGP.
Obviously you’re all familiar with rotation ciphers, also called ‘caesar ciphers’ after the inventor. You simply turn... Comment too long. Click here to view the full text.
This is quite unusual; the variances in frequency are flattened out. This would tell us, after testing ‘y = e’, that we probably aren’t dealing with a rotation cipher.
The reason this cipher is called ‘polyalphabetic’ is because it uses n alphabets, where n is the number of characters in the ‘codeword’ or ‘key’. In the case of the previous post, there were five alphabets: one used for characters encoded with ‘b’, one for ‘o’, one for ‘n’, one for ‘e’, and one for ‘r’.
How do we use this to attack the cipher? Well, if we suspect... Comment too long. Click here to view the full text.
Pic related. The author of A Universe from Nothing, in the words of also all time greatest scientist Richard Dawkins:
>Even the last remaining trump card of the theologian, ‘Why is there something rather than nothing?,’ shrivels up before your eyes as you read these pages. If ‘On the Origin of Species’ was biology’s deadliest blow to supernaturalism, we may come to see ‘A Universe From Nothing’ as the equivalent from cosmology. The title means exactly what it says. And what it says is devastating.
sup /sci/ I need to get like a 9.9/10 in an upcoming math exam that includes all high school topics and some college ones. Basically I need to get really good at geometry, algebra, trigonometry,precalculus differential calculus, integral calculus, statistics and probabilty I have a bit more than a month where I'll be doing nothing but that, literally no job or school. What's the most effective and fastest way to learn?
>>7690266 Depending on what kind of questions you'll be tested on, it shouldn't be too hard. My advice is to just make practice exams with possible questions, and just sit on your desk, time yourself, and do these exams without any notes. After a week you'll notice a great difference in improvement and should be okay.
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