Text Definition and 558 Threads

Alright, I am looking for a good physics textbooks that cover all or most of these contents given below: Measurement Mechanics Oscillations and Waves Thermal Physics Gravitational Field Electrostatic field Magnetic Field Current Electricity Electronics Mechanical Properties of Matter...

How can we turn a text file into an audio file? What are the programs making this job are called? Thanks

I'm going to Uni in October and want to get a head with maths for physics NOW so its not so daunting when I am there. What textbooks/resources are an excelent introduction to physical mathematics? Thanks Nathan

Are photos from text messages stored in internal storage in a cell phone, even if not downloaded into the phone?

Let me be more specific: I'm needing some source that talks, in a more broad way, about how heavier elements tend to "sink into the core" during Earth's formation (when we're talking about siderophile elements, that readily combine with molten iron). Wikipedia's page about the Goldschmidt...

How do I use Python to extract all text that comes between a recurring set of unique strings? Example: ABC;the red dragon;123, ABC;the blue dragons;123 ABC;the black dwarf;123, ABC;the gray elves;123 ABC;fantasy characters;123, ABC;winged balrogs;123 I want to parse through a large text file...

This thread is for us to discuss the text The Drunkard's Walk: How Randomness Rules Our Lives by Leonard Mlodinow, and by that I mean for me to ask questions of you, those of you who will suffer me, my experts in probability, the PhysicsForums readers, on things I'm interested in from the text...

Hi, I have a masters in physics but it is decades old and I am a little rusty. Plus, I didn't study calculus and differential equations carefully or systematically, as I was young and arrogant (not to say that all young people are arrogant, but I was). Returning to physics now, I find that I can...

Can we enter some math symbols such as square root in rich text files? Rich text files allow lots of things such as pasting pictures and sub and super scripts. Thank you.

Hi PF! I am trying to wrap text around figures in the article document class. The code I type is \usepackage{wrapfig} \begin{wrapfigure}{R}{0.5\textwidth} \centering \includegraphics[width=5.7in]{Schematic} \caption{Schematic of double-drained wetting capillary liquid in an interior corner...

Solve the equation for x. x^3 + y = z^2 How do I use the QUICK LATEX box to convert this equation in LaTex form?

In my current math class, we are constantly leap frogging throughout the text. In week 1, we did a couple things from chapter 6, not going through it fully- just a few sections here and there. In week 2, we went to chapter 3, again only doing a couple sections somewhere in the middle of the...

Hi, I may have discovered a textbook error but I'm no calc whiz. I need an assist to find out if the question unintentionally described a square instead of a rectangle. I have attached the textbooks solution as well as my attempt at a solution. The numbers check out, I just want to make sure...

Homework Statement given: A wire loop with a circumference of L has a bead that moves freely around it. The momentum state function for the bead is ## \psi(x) = \sqrt{\frac{2}{L}} \sin \left (\frac{4\pi}{L}x \right ) ## find: The probability of finding the bead between ## \textstyle...

I need to create a simple text parser that replaces {tokens} with text from a table. The one more complicated bit is the {?text?} tag where text must be included only if the preceding AND the following tokens exist and are not empty. You could do {?text} where it looks for a non-empty...

Hi All, I am trying to figure out how to scrape ( if necessary; use API otherwise ) , html to text , maybe with an intermediate step using Excel and .csvs, EDIT Preferably using Python. I have some idea on how to go about it, but I am no expert. I would appreciate input in general. Thanks.

Homework Statement I am self studying an introductory quantum physics text by Marvin Chester Primer of Quantum Mechanics. I am stumped at a problem (1.10) on page 11. We are given f(x) = \sqrt{ \frac{8}{3L} } cos^2 \left ( \frac {\pi}{L} x \right ) and asked to find its Fourier...

I am trying to improve my basic math , After trying to learn math myself , i finally figured out where to start . I really need to start working with examples from a 6th grade text onward http://ncert.nic.in/textbook/textbook.htm?femh1=0-14 That website has texts from Grade 1 to Grade 12...

Is there any way to show sub or sup indices in a text file such as this Ab? Text files are very easy to use. They are fast, can be opened fast and created easily. Thank you.

From time to time I come across some text in a Wikipedia article that is quite misleading to a naive reader. The following is an example: https://en.wikipedia.org/wiki/Friedmann_equations The problem is that the sign of Ω0,k is backwards. That is the sign is positive for a universe with...

Consider squares inscribed in different isosceles triangles with sides equal to 1. (One side of the square lies on the bottom.) Find the side of the largest square

I'm having issues with this code, here are the parameters and results. Create a program using conditional logic and string operations that does the following using your NetBeans IDE and upload it here: (1) Use scnr.nextLine(); to get a line of user input into a string. Output that line. (1...

Next fall I will be teaching an electronics class for the first time, for undergraduate physics majors (who have already taken introductory E&M and integral calculus, not necessarily PDEs). The catalog description is "An introduction to analog and digital electronics. Topics include DC and AC...

I'm working on this code for my programming class and I'm completely stuck. Here is what I have so far but I keep getting error messages. import java.util.Scanner; public class TextMsgAbbreviation { public static void main(String[] args) { String BFF ="best friends forever"...

Homework Statement [/B] So I can't get from line (53) to line (54) I do not understand how interchanging the variables will cause the imaginary part to disappearThe Attempt at a Solution I'm not sure where to start I know exp(ix) = cos(x) +isin(x) And the only way i see cos(x) coming out is...

Hi Group, I am trying to get data from text file, I hope someone can suggest me how to do? I also have this code which can read data, but i do not know how to scan every single line to get any information I want. Please help, Thank you very much. Here is my code: #include <iostream>...

OK, plane and simple...no pun, sadly. As you are now, looking back to your young mathematical prodigy self, which five math text would you recommend to yourself and why? The bonus question, would you recommend a computer language or LaTex or both? Thank you for the input! Jonathan P.S...

Basically does anyone actually spend time to position each element for their website in the css/html code or are there special programs that are more interactive and generate code for you with movable buttons etc...?

In Mary L. Boas' Mathematical Methods in the Physical Science, 3rd ed, on page 17 it goes over absolute convergence, and defines the test for alternating series as follows: An alternating series converges if the absolute value of the terms decreases steadily to zero, that is, if |an+1| ≤ |an|...

Hi, so I'm taking calculus 1 this year however I haven't taken precalculus in several years. I don't remember any of it, and the textbook of the course doesn't review it at all(they just sample you questions) and I'm having issues solving the precalculus review questions(how necessary is it that...

Hi everyone, I've been working on this assignment for a few days now with no luck at all. Would anyone be willing to review this code for me and see if I'm even setting it up right? Here are the directions for the assignment. 1) Use scnr.nextLine(); to get a line of user input into a string...

From Schwartz http://isites.harvard.edu/fs/docs/icb.topic521209.files/QFT-Schwartz.pdf p. 257 or his qft book p. 455 1. Why and how does the integral in (24.24) go imaginary, when M > 2m? Is it because the logarithms can not take negative real numbers, thus we have to switch to complex...

1. The derivation In a 3-dim space,a particle is acted by a central force(the center of the force fixed in the origin) .we now take the motion entirely in the xy-plane and write the equations of the motion in polar coordinate how can i derive from these equation that T(kinetic...

Hi everyone. For anyone who has the book. I am going through Quantum Field Theory for the Gifted by Amateur Tom Lancaster and Stephen J. Blundell. Are the topics enough to prepare me for a course in QFT and then Advanced QFT? Of course I can look for other resources. But I just want to know how...

Suppose I have two .txt files: >>text1.txt X Y Z x1 y1 z1 x2 y2 z2 ... xN yN zN >>text2.txt W R w1 r1 w2 r2 ... wN rN Is it possible to merge the collumns in a single txt file like: >>merged.txt X Y Z W R x1 y1 z1 w1 r1 x2 y2 z2 w2 r2...

Sorry if I'm posting in the wrong place. Since the difficulty I have is with the text of the book, and not the exercises, I posted here. In proving theorem I.2, how is theorem I.1 used to assert that 'there is at most one such x'? The first image below gives the background text. The text I have...

Zill DE text says (y-x)dx+(4xy)dy=0 can be rewritten as: 4xy'+y=x Am I missing something? I got 4xyy'+y=x instead. Very rarely have I ever required starting a thread in a forum to resolve something as seemingly trivial as this but I just want to verify whether this is a typo or not. Here...

Hello Could someone suggest a good book for my son to read to learn algebra? I look in the bookstores and the books titled "Algebra..." all involve equations and unknowns and arithmetic manipulations and train or work problems (2 farmers plow three fields in one day, etc) I am interested in...

I wish to get a bigoplus symbol like the one in Knapp's text, Basic Algebra, as follows:https://www.physicsforums.com/attachments/5395but when i use the Latex code \bigoplus_{ (e,f) } \mathbb{K} (e, f) I get the (e, f) in slightly the wrong place as here: $$\bigoplus_{ (e,f) } \mathbb{K} (e...

Hi at all, what is the better book for study analysis 2, if possible also with exercises...

In Zee "Einstei gravity in a nutshell" section I.6, page 83, the author says about the approxiamtion of the south pole of sphere How is the first equation approximated by the second? One page later he does this expansion again. Is this thecalculus Leibnitz rule? Or some clever trick...

I know this is pretty basic question, but something doesn't seem to work right for me... Suppose I have a txt file, with the following input: x y 0.0 0.5 1.0 1.5 2.0 4.8 3.0 4.9 How can I pass those numbers into x and y arrays using a C++ code? My code so far is like this...

Hi, everyone, I am now looking for a good textbook on QCD. I am especially want to learn the derivation of DGLAP evolution equations. So, it will be better if the book contains the detailed derivation of evolution equations step by step for all the diagrams using Feynman rules. I looked through...

Hello I am teaching physical science at an online school, and came across this issue in the textbook - I'm looking to double check with more knowledgeable people before I bring it up and potentially make a fool of myself. In one chapter of the physical science text it discusses various...

Intro to Lin. Alg via MIT OCW 18.06 (part of Electrical Engineering), by Gilbert Strang. I've been doing it as independent study before starting my BSEE next year. I'm getting to the end. Chapter 9 is titled "Numerical Linear Algebra", and is concerned with the heavy, intricate computational...

I have a program "probe.f90" that reads in a text file. It runs. I am having trouble reading in the second text file (when prompted by user). How could I turn this bit of code into a function? I was thinking about a function that strips the header from the fasta file. Then read into an...

I want to create a Matlab script called hw11.m, which reads in a text file of weather information, parses it, and writes formatted summary information. The textfile is called MonthlyHistory.html I cannot figure out how to write a loop that averages the third set of numbers in the string. an...

Hi, what's the best reference and textbook for General Chemistry and Physics in College could you recommend? I'll appreciate your recommendation.

I had to use a network analyzer measuring the standing wave pattern along a transmission line taking data points at half mm increments. The software I used got me the values in a text file and the way it is formatted, I can't figure out how to make the left side the X axis and right side the Y...

I am currently teaching the pure mathematics II component of A-level mathematics which consist of the following subjects: Logarithmic/exponential functions, trigonometry, differentiation, integration (including integration by parts, and trig substitution), numerical approximation of roots of a...