Intro Definition and 547 Threads

Hi... Just like to introduce myself and hopefully explain my reason for being here and areas I'd like to explore. Since my younger years my father had an interest in the universe and the unexplained and although his explanations were basic and sometimes confusing as time has progressed I'm...

just started university 2 weeks ago ( mechanical engineering) i hope i will get answers to my question here ( I am a very curious person) and can get my concepts/base strong as much as possible

Hi, Physics Forum. I have been frequenting this site's threads since high school, and finally needed to ask some questions of my own. I am a physics undergrad working on relating self replicating fracture mechanics and E+M. I hope I can contribute to this great community! Thanks

The required textbook for my intro signal processing class is "Signal Processing First" by James McClellan. So far I like the book quite a lot because the author does a good job to explain the concepts clearly. However I feel like the book doesn't provide enough practice problems. I just want to...

Humbly honored to be in the virtual presence of such smart minds! I am eagerly grateful to absorb some of your wisdom!

Hey I'm Denny, I am currently a biology major and will be graduating in the spring of 2017. Also I am from Philadelphia, Pa I have no problems with understanding biology, chemistry or math but for some reason I cannot for the life of me understand physics. I really have to commend every one of...

which has higher failure rate: linear algebra or intro to programming. I understand failure rate might be skewed: math majors, who are gifted and interested in math, are required to take linear algebra but not intro to programming, while CS majors are required to take both. Which class do CS...

I was in the US Navy Submarine Service , stationed on the USS George Washington Carver (SSBN 656(G)) as a Navigation Electronics Technician. I have a B.A. in Philosophy with a Computer Science Minor from the University of Arizona. I'm especially interested in Physics, Astrophysics, and Cosmoloogy.

Homework Statement Im being told that each quantum of light(a photon) has energy which is equal to hf. (E=hf). Now what I don't understand is how can a photon have a frequency? Shouldnt the light wave(which is made up of quanta called photons) have the frequency and not the photon itself? How...

micromass submitted a new PF Insights post How to Self Study Analysis. Part I: Intro Analysis Continue reading the Original PF Insights Post.

So I'm trying to do this problem: Write a for loop to populate vector userGuesses with NUM_GUESSES integers. Read integers using cin. Ex: If NUM_GUESSES is 3 and user enters 9 5 2, then userGuesses is {9, 5, 2}. Here is my code so far... #include <iostream> #include <vector> using namespace...

I'm in an introductory course for c++ and I'm trying to make a program where it analyzes a url link and do string searches within it. For example if I were to put in https://www.wikipedia.com , it would say, "You've requested the Wikipedia- The Free Encyclopedia page." My professor told us...

Hello, I'm trying to self teach myself Fundamental Mathematics. I looked around, but I wasn't sure what to look for exactly. I read the part on Set Theory in "Book of Proof" by Richard Hammack. I enjoyed it, but I wasn't sure if it is rigorous enough to stand against a college level course...

Hey guys I'm a sophomore in college currently taking physics 2(intro E&M), Multivariable calculus, and Differential Equations. I was hoping some of you guys could recommend some good books for intro mechanics and E&M. I'm currently using University Physics by Young in my E&M class, and I used...

Hello guys, can you recommend me a good and Rigorous introduction to functional analysis?? Rigorous like E.D.Bloch book on Real analysis if possible

A drink costs 2 dollars. A taco costs 3 dollars. Given the number of each, compute total cost and assign to totalCost. Ex: 4 drinks and 6 tacos yields totalCost of 26. import java.util.Scanner; public class ComputingTotalCost { public static void main (String [] args) { int numDrinks...

Great youtube introduction video about Quantum Field Theory (QFT) from a couple of days ago by Dr Don Lincoln @fermilab. The video and description of a particle being a disturbance in a field and flying through the air at 3:25 is especially compelling.

Homework Statement Simplify the following statement as much as you can: (b). ##(3<4) \wedge (3<6)## Homework Equations ##\wedge= and## The Attempt at a Solution I figured that I could just write this as ##3<4<6##, but then I considered what if I didn't know that ##4<6## If it was just...

Hello, fellow physics-lovers! The name's Brandon, 25 years old, and currently majoring in physics at the University of Oxford. My daily activities when not attending lectures, doing work, or studying include PC gaming, exercising, browsing the internet, and drinking water (I love water, if you...

Homework Statement Hi. I've been reading my probability book and I came across this problem: In a class of 100 students, 50 have MasterCards, 60 have Visas, and 30 have neither. Let ##V## be the event of having a Visa and ##M## be the event of having a MasterCard. a) How many students have...

I am a professional math and science tutor, primarily focused on math and physics. I used to tutor organic chemistry but gave it up because I didn't want to study orgo an hour per week for the rest of my life. I like general chemistry and have no trouble with most topics, but the way of...

My Intro to LA course has visited the ideas of polar decomposition and Jordan forms, but not gone into them in depth. I wouldn't say I understood them, but I'm aware of them, and could possibly solve some basic exercises involving them if all I had to do was apply formulas. My question is...

Homework Statement http://puu.sh/lKP9T/b6aea483b5.png http://puu.sh/lKPdk/a99777477e.png http://puu.sh/lKPkj/a9f199e959.jpg My question is the last picture/slide which says F_DB = F_DA how? why is that? Homework Equations F_DB = F_DA ? The Attempt at a Solution

Homework Statement My lecture notes says that Work is the transfer of energy by means of a force acting on an object/body. What about heat energy? Does work also need to be done to transfer heat energy from hot object to cold object? Say if i drop a hot metal into room temp water. The metal...

Hello everybody! I'm a Physics PhD student from Uzbekistan. I want to answer a question in this forum.

Hey everyone, Today in my Calculus 1 lecture we covered Areas and Distances, which serves as a prequel to the definite integral in my book. I am confused on some notation the book uses, and I cannot seem to find a clear explanation anywhere that I look. n ∑ f(xi) ΔX ≅ A i=1 First, let me...

Hi everyone, 1. Homework Statement Homework Equations 1) centripetal acceleration = v^2 / R 2) centripetal acceleration = 4 pi^2 R / T^2 3) average velocity = displacement / time[/B]The Attempt at a Solution For #1a I first found the displacement of A to B. And then divided that by...

Hi. I'm just starting to self-study QFT and need all the help I can get. I already have "QFT for the Gifted Amateur" and the books by Zee and Schwartz . I am looking for another book that takes things step by step from the very basics. Was looking at the book "Student friendly QFT" by Klauber. I...

Hi folks, I know nothing about groups or symmetry. Could anyone recommend a good introduction that defines groups and explains their notation and operations? I am particularly interested in general, orthogonal, and unitary groups. Thanks in advance. Kevin

im in grade 11, teacher is very weird and doesn't explain things properly

hey guys I am at the point in my college career where i am about to fail my first class (intro to circuits) and I am an ee major (prob a bad start to my major classes). I am probably going to take it again next semester but can people chime in on how to come back after failing a class; the...

I spoke with my adviser about this he said "have you ever programmed in Java before? because you could CLEP out into the following course" I told him I have programmed very little in Java. Now my life was a bit shattered when I realized the wait-lists for this class were too much to get in. So...

I'm a senior-level undergrad student only two classes away from graduating with my BS in physics. I'm very interested in condensed matter, solid state, and device physics. My dream is to help make Moore's law a thing of antiquity. I'm taking this fall semester off to pursue internship...

1. I'm having some trouble with some of the contour integrals covered in Chapter 2 of Peskin & Schroeder's Intro to QTF. I'm not so much as looking for answers to the integral (in fact, the answers are given in the textbook), but I was hoping someone could point me to some resources to use to...

Hello all, I was wondering, what is a really great introductory general chemistry book/source (covers chemical kinetics, thermodynamics, electronic structure, electrochemistry, acid-base equilibria, etc.) that has a lot of conceptual questions and not just quantitative? An example is like...

I am SubjugatedGod (just in case you couldn't tell).I plan to overcome all gods and become my own, how I will do this, with your help, and low pay interns. I like physics, I like mathematics, I like music, manga/anime, the idea of not dying before age 50, sometimes sooner depending on my mood. I...

Hi! I am Gohar Shoukat. I am a student of Mechanical Engineering in Pakistan. and I have a lot of questions related to fluid mechanics that I need to ask. Cant wait to get started

Hi all, I am new to the forum. I have a BS in Chemistry (1984). So I remember a little quantum mechanics. I am trying to wrap my head around cosmology. I started studying GR on my own about a year ago. It took me almost that long to understand tensors. This invariably lead me to start reading...

Hello every one . If the derivative is a linear operator ( linear map ) Then what is the example of non-linear operator Thanks .

Consider the quote ''The macrostate which corresponds to the highest number of microstates which result in that macrostate, is the state which will be observed.'' Can someone specify in which context this is correct because I'm quite confused by it. If I have an isolated box with N particles in...

I took a college physics course (Mechanics) at a CC, and my physics prof was notoriously known to be one of the best... many of the students transferred to Berkeley and say that he is one of the best they have taken. He said that his two favorite book are: Halliday Resnik: Fundamentals of...

Hi I know eveyone buys Young University physics, and i think it's great for easy problem solving, a bit wordy but quite clear, however I like books that give a bit more insight into the reasoning and mathematical development and/or derivations of the theories, instead of just telling you "this...

Hey everyone, I just recently found this website, and it looks like there is tons of awesome information available. I'm currently enrolled in community college, and I intend to do a dual major in math and physics. My hobbies include playing World of Warcraft (I freely admit to being a complete...

So, I've been inspired by shows like Fringe, games like Deus Ex and Halo, and movies like Robo Cop, The Machine, Eva, and Blade Runner. My interests would fall into the categories of things like neuroscience, biological engineering, nanotechnology, bionics, AI, body-computer interfaces, etc.--...

Does anyone have a good reference to a more modern introduction to lqcd? By modern I mean including unquenched, staggered quark, etc. Most intros I find are quite dated and I'm interested in learning about newer technology and methods/improved. Figured there may be some lattice theorists here...

Hello all... I'm a long time electronics and EMR technician... Along with doing much work in photography. The technical end as well as the 'taking pictures' end.. Which I call my major and minor of non-college, but very intensive OJT studies, experience, and diploma equivalents over...

Homework Statement Find the steady-state error due to a disturbance Td(s) = 1/s. Set R(s) = 0. if given a system: Homework Equations n/a The Attempt at a Solution I need Y(s)/Td(s). To do this I must find Y(s) in terms of the transfer function Y(s)/R(s) which I have obtained. This gives me...

I am new to this forum and I hope to ask questions after I do some research and I still cannot find the answer. Currently I am in HS, but I just finished calculus and physics and now I am studying nuclear physics books. I only want to be a humble nuclear physics learner.

Brand new here. Hoping to learn a lot from you guys as well as impart any knowledge I may have.

This is the book that is required for my materials science II class but I can't find this book, I can't even find the contents so I can find a similar book. Do you know any?