Introduction Definition and 860 Threads

Okay forgive me because i am completely new to programming - as i am going to ask some possibly stupid questions: How is a computer language like python, java created? Who creates them? Is Word,Excel created using python, java etc?

Hi everybody. Next year I will start an undergraduate course on algebraic topology. Which book would you suggest as a good introduction to this matter ? My first options are the following: 1.- "A First Course in Algebraic Topology" by Czes Kosniowski 2.- "Algebraic Topology: An...

I am trying to write a hook for vectors on a linear algebra course. Does anyone have an opening fon vectors that will have a real impact on students?

I am extremely interested in mathematics, and most probably plan to major in it. Do you guys feel as though this book would be accessible to a high-school student, willing to gain a more rigorous understanding of calculus? I have already completed calculus 1 and found it rather easy, and I am...

Hello folks, my name is Allan and I'm new here. Seems like a great forum. I'm looking for a study buddy at OSU. I'm an econ student switching over to a science and am prepping for honors physics in Autumn. Nothing overly cooperative - mostly for motivation. I'm in the honors program and at...

Hi there, Good evening all. Ok, I've just started my HNC in electrical engineering (1 month in via open learning)and to be honest, I'm struggling. I understand all the concepts of the equations regarding bending moments, shear force diagrams etc but i can't seem to get to grip with the...

Greetings everyone, I am an undergraduate physics student an I would like to receive your suggestions about introduction to laser books. Which one do you recommend for a beginner? The possible candidates I have found are as follows: Laser Fundamentals William T. Silfvast Basics of Laser...

Hello everyone. Thank you so much for taking your personal time to read my post. I am a very zealous and passionate undergraduate physics major! I've changed my major to physics about two years ago in my community college, and I will be now transferring to a university as a physics major...

Hi to everyone :) Like the topic's title says, I am starting my journey to Bose-Einstein condensate. What I am looking for are some basic introductory papers or materials that deal with derivation of the Gross-Pitaevskii equation on the basic, most elementary level that is possible. I am...

I've read that color was introduces as a degree of freedom nessecary to satisfy the pauli exclusion principle in the quark model of particles. For example for the omega minus which had an observed total spin of 3/2 and no angular momenta ment that the spin had to the the same for all of the...

I need to know about converge series.For example how to identify a converge series.Plz explain.

Hi, I currently have to learn about the topic of eternal inflation, at a basic level for now, I am already familiar with the topic of inflation. I don't know what are the good references to this subject. I will try to start in Weinberg's book of cosmology (the one published in 2008), but is...

Homework Statement This exercice is in a Chapter named Introduction to Cartesian tensors. The following is the original question of the exercise: Homework Equations Compute the vector: (x1^2 + 2x1*x2^2 + 3x2^2*x3), i The Attempt at a Solution Plz help me, i don't understand what...

I know a fair amount of theoretical Quantum Physics, how things work within it, and the ideas that ground it. I lack, though, the more advanced mathematics. Right now I'm taking an Engineering course, and last year I studied a little bit of Quantum Physics, but the calculations were limited...

Hi. I am an undergraduate physics student and have just begun lectures on elementary particles and the Standard Model. At the moment I really know nothing about this branch of physics and am looking for recommendations on a textbook which introduces the subject well. Thanks

Hello I am looking to introduction of nuclear reactor physics course in the summer 2012 can u help me to find this course in any universities ?

Homework Statement Give a sample problem its solution employing Pigeonhole Principle Homework Equations Pigeonhole Principle The Attempt at a Solution We have this homework about pigeonhole principle which hasn't been discussed yet, but we need to present an example and present it...

Here are a few: http://codecogs.com/latex/eqneditor.php (WYSIWYG) http://tobi.oetiker.ch/lshort/lshort.pdf (PDF) ftp://ftp.ams.org/ams/doc/amsmath/short-math-guide.pdf (FTP)

Homework Statement Find nonzero scalars a, b, c, such that au+b(u-v)+c(u+v)=0 for every pair of vectors u and v This isn't a homework question, more of a conceptual exercise, but I want to understand it thoroughly.The Attempt at a Solution I've gone to u(a+b+c) + v(c-b)=0 then I couldn't quite...

Should I buy this book for a good price now even though I won't be taking a junior year E@M class till two years from now. I'm asking because I could use Griffiths now as a good reference book. But because it's paper back idk if it will last for two more years. This semester I'm taking an E@M...

Just learning about vectors in 3 dimensions. Would it be correct to think of the cross product vector like a resultant vector? Is it similar to the displacement? If so, why is it always 90 degrees from both original vectors? If anyone has some deeper insight into any of these vector topics...

I'd like to introduce myself and ask a pedagogical question regarding my future studies. My name is Rob Dorsey and I am a 64 year old, disabled and retired airline pilot living in a southern suburb of Cincinnati. I have a degree in music with an engineering minor from a small regional university...

Hello i studied Sadri Hassani az mathematical physics book. if i want to learn topology (( for general relativity )) what it the best book for introduction ?

Hi, Could you pls advise me any textbooks or papers where I can find pedagogical introduction to N=2 Supersymmetry & familiarize myself... Thank you very much Best Regards

I'm looking for a good introductory text on electromagnetism for someone who has very little experience with physics but is comfortable with multivariate and vector calculus and ODE's. I'd prefer something that starts from the basics and works up in a rigorous fashion. Note that I am proficient...

Hello, I have recently been looking into purchasing this book. I know it’s only ten dollars, but money is money, and if some of you pleasant people have any experience with this book I’d appreciate any feedback (of the book). Thank you and have a Merry X-mas. :-p

Homework Statement Let the dipole \vec{m} = m\hat{k} be at the origin, and call a certain horizontal axis the y axis. a) On the z axis, what is the angle between the z axis and the magnetic field? b) On the y axis, what is the angle between the z axis and the magnetic field? c) On the cone...

Hey all, was wondering if someone knows of a book (if it's on safari books online, even better!), website or other source that teaches me -- a software guy -- the basics of electronics. Basically I want to know about voltages, generators, capacitors and everything in-between. Wanna have my...

Any recommendations?

hey! are there any good books or online lectures for an intro to Cog science? Is this a good one?: https://www.amazon.com/dp/0262691752/?tag=pfamazon01-20 I'm not interested in popularizations, first year academic material would be great Thanks!

1. Given: Let f: X → Y be a function. Then we have an associated function f-1: P(Y) → P(X), where f-1 (B)⊂X is the inverse image of B⊂Y. Question: Show that f^(-1) is one-to-one if and only if f is onto. [Notes: ⊂ represents subspace, I just couldn’t find a way to put the line under the...

Homework Statement My intro to Proofs class uses How to Prove It, 2nd edition by Velleman. I would like a couple other references on introduction to proofs. What do you recommend? I don't mind spending hours agonizing over proofs, but I'd like to be able to check my work with answers...

I'm just learning work in my physics class and, for some reason, I'm having difficulty understanding it. The problem in my homework assignment asks: A particle moves 5 m in the positive x direction while being acted upon by a constant force F = <4,2,-4>.The work done on the particle by this...

I'm going through the book: Principles of Quantum Mechanics 2nd edition by R. Shankar 1. In the mathematical introduction to projection operators (page 22), it writes: "Consider the expansion of an arbitrary ket |V\rangle in a basis: |V\rangle=\sum_{i}^{} |i\rangle\langle i|V\rangle"...

Hello World I can't introduce the concepts of hydrodynamics into my mind,such as the streamline. I can't imagine what is a streamline? What makes us say that the flow is turblant or the flow is steady? --------- "the direction of the tangent drawn at any point on the streamline represents...

I'm looking for a pedagogic introduction to d-wave superconductivity on the level of field theory. Ideally, this would involve a derivation of d-wave superconductivity and the form of the gap parameter from some fundamental Hamiltonian (if such a derivation is even possible yet). Books and...

Homework Statement I'm asked to design a small engineering component/part/machine of your choice.I need an idea of what to design or a starting point Homework Equations The Attempt at a Solution

Hello What is the better book on introduction of optics? if you have on online please give me the link regards

I am looking for books or papers that explain conceptual ideas that underlie the study of quantum fields. I am looking for something that clearly explains Field measurement. Most textbooks i am aware of emphasize on the development of formal techniques of Quantum field theory.

Homework Statement One model for the spread of rumor is that the rate of spread is proportional to the product of the fraction y of the population who have heard the rumor and the fraction who have not heard the rumor. i) Write a differential equation that is satisfied by y ii) Solve the...

Calculate d<p>/dt Answer: d<p>/dt = <-dV/dx> generally speaking (I believe) you need to use scrodinger's equation (both of dphi/dt and dphi*/dt) and the expectation value of momentum: <p> = -i*h_bar * integral (phi* * dphi/dx) dx. I would say that the way I used Cramster was just short of...

I am taking a class on Manifolds and whilst reading the book I came about some terminology that has got me confused. What is the differences/relations between these terms? Euclidian Space Topological Space Metric Space Vector Space I thought that a vector space was based on the...

Hi, I have been searching the internet for some gentle introductions of Fibonacci chain, but so far I haven't found anything. I wonder if anyone can recommend some good introductions to me, e.g. a book, an article... Thank you.

Hi, sorry in advance if this isn't the right section but I'm not too sure where else to post this Homework Statement The essay requires me to type up an introduction that has a word count of roughly 700-1000 words. I have chosen to do an experiment on parabolic trajectory and thus have to...

I own a copy of Griffith's Quantum Mechanics and I like how it is written very much but while skimming through Griffith's Particle book I saw a reference that said "at the level of Park" and I decided to investigate. I started to read through it and the text is structured the way most books...

Is it better to start learning Python using a introduction to python book (Think Python) or a scientific programming book (e.g. A Primer on Scientific Programming with Python, 2009)? I have little to no programming experience. I'd use python solely for physics computation/simulations. I was...

Homework Statement Suppose that a beam of light consists of photons having an energy of 5.4 eV. what is the wavelength of the light? Homework Equations hc = 1240 eV*nm E = \frac{hc}{\lambda} The Attempt at a Solution 5.4eV = \frac{1240eV*nm}{\lambda} \lambda =...

Homework Statement Find the length of the smallest standing wave that can be formed with light having a frequency of 600THZ. Homework Equations f = 600*10^{12}Hz c = 2.998x10^{8}\frac{m}{s} \lambda f=c The Attempt at a Solution \lambda f=c \lambda...

Homework Statement Suppose that an electron has a kinetic energy of 1.0 eV. What are the speed and the momentum of the electron? The book is Modern Physics for Scientists and Engineers by Morrison. If anyone knows where to get any of the answers(or solutions. solutions may be harder to...

Has anyone read How to Prove It: A Structured Approach by Daniel Velleman or Introduction to Mathematical Thinking: Algebra and Number Systems by Gilbert and Vanstone? If so, how well do they prepare a student who has had no exposure to proofs to take classes such as abstract algebra? Thanks...