What is List: Definition and 506 Discussions

I'm replicating the Faraday Effect as a high school experiment. Can anyone direct me to Verdet constants of water, air, olive oil and table salt for lasers of wavelengths 405nm, 532nm, and 650nm? I'm using the constant as a variable using different materials but I cannot find a specific value...

So I was reading a book that warned me about mathematical objects and how they can be confused and muddled up for something else while being an entirely different thing..So, As far as I know these are distinct mathematical objects (which I think I know). Is it a valid list and what are some...

I was making a little bit of a thought experiment with a simple program and wanted to double check it with you guys. The idea was to utilize basic functionalities of python, regarding lists. Then the goal is to find out and print the number of times that a certain element occurs inside a...

Homework Statement Create a class named digit, which stores a node holding a digit. Include appropriate data members and member functions to do the following: (a) Read a long number (datatype is double) from user and store each digit of the long number as a node value. For example, if the...

Nowadays I read a lot about people's bucket list. For members not familiar with the concept, a bucket list are a list of things they really want to do before they die. For example, some people might really want to try parachute jumping or riding an elephant. But when it comes to us scientists...

(mentor note: moved here from another forum hence no template) This is the code with also the explanation of the exercise. There is bit of italian, but everything is clear enough. I actually solved the exercise. /* Add an element of value n before each element of the list that satisfies the...

Back again. This time I'm looking to build a small catalog of Feynman diagrams for my own use (and when I'm done to put it on the Internet in PDF format). I need your help to get a list of URLs together that I can download the required PDF's off the internet, bring them into Illustrator and have...

Hello. It's given the following type (sorry for the mix italian-english): struct El{ int info; struct El* next; }; typedef struct El ElementoLista; typedef ElementoLista* ListaDiInteri; And I have to remove all elements of value n; I did this: void remLista(ListaDiInteri *l, int n)...

Hi, I am using NetBeans 8.1. I want to add elements in a list Box on a Button press. My code would read text from textField & then insert into list box: private void button1ActionPerformed(java.awt.event.ActionEvent evt) { // TODO add your...

Why doesn't pdg baryons list show the quark compositions and electrical charges? For example, there is only one roper resonance entry, but there are two roper resonances with different quark compositions (although they have the same mass), why not list all the variations?

I am having trouble with this program with negativeCntr . Any one explain what i am doing wrong and guide me please. [CODE]#include <iostream> #include <cstdlib> using namespace std; class IntNode { public: IntNode(int dataInit = 0, IntNode* nextLoc = 0); void InsertAfter(IntNode*...

Can someone please explain the deconstruction and elements of this set. I understand it to be.. F3[X] = {f(x)=a(0)+a(1)X+...+a(n)X^n : a(i) in F3] <x^2+1> = {g(x)(x^2+1): g(x) in F3[x]] So an element in the quotient should be something like f(x)+<x^2+1> Yet, research shows there are nine...

Max: 3x + 5y s.t. x + 2y ≤ 5 x ≤ 3 y ≤ 2 x,y ≥0 By the simplex method, the profit is $14. Using sensitivity analysis I changed the RHS of the 1st constraint and keeping everything else constant, I get the best profit value of $19 at RHS of 7. What other methods can I use such as the...

http://carlofest.wix.com/carlofest#!speakers/srtqn Try to estimate the range of ideas represented by this collection of speakers (all but two are already confirmed for the 22-27 May conference). It covers not only Quantum Gravity and Cosmology but also Noncommutative Geometry, Foundations of...

I have a code that loops through and does some computation on 5 random values from my lists of data (2187 rows long). for i = 1:3 randomdata = round(rand(5,1).*2187); xval = x(randomdata) yval = y(randomdata) numerator = length(xval).*nansum(xval.*yval) -...

* FAQ entries are slowly being migrated to the Insights blog https://www.physicsforums.com/insights/category/faqs/ Building a Definition for Heat Why Don’t Electrons Crash into the Nucleus in Atoms? How Does an Airplane Wing Work: a Primer on Lift Energy Gained by Charge in an Electrostatic...

Hello everyone, sorry to bother you. I was just looking around for a list of all the Quantum phenomenon effects and couldn't find one quickly. I know two of them such as tunnelling and locking but the rest of the ones I've heard of I can't remember. Also there may be ones I don't know about...

I refer to the list here: https://math.berkeley.edu/~kirby/ entitled "Problems in Low-Dimensional Topology" Question says it all. I am giving a graduate level presentation to a group that includes some knot theorists. (I believe the collective term for knot theorists is a "tangle"...

Hi, I'm embarking on a mission to self-study math, and would like some recommendations on any missing books or ones that should be replaced in my repertoire. The goal is to build a strong mathematical foundation. My naive idea of what that means is something like an undergraduate math major, so...

Could you help to add more items into this incomplete list of life-friendly "coincidences" in QM: 1. Having at least 3 generations is important for life. With 2 or less, CP violation is "absorbed", and without CP violation there is no matter-antimatter disbalance. 2. Neuron is "almost" stable...

Homework Statement The following program should create singly circular linked list which has n arbitrary stored positive integer numbers. Then, create BST which has all primes from the list, and store them in text file in descending order. Homework Equations Linked list Binary search tree File...

Not long ago, a member posted a problem in the Homework section, concerned with determining which of the five-digit permutations of 4, 5, 6, 8, and 9 were divisible by 8. I first thought about writing some C code to figure this out, but when I discovered that Python has some functions that...

Mod note: Added code tags 1. Homework Statement in my main I am getting infinite loop iterating over a link list Homework EquationsThe Attempt at a Solution /* * graph.c * * Created on: Oct 8, 2015 * Author: danif */ #include <stdio.h> #include "IntList.h" int main(void) { typedef...

Is there any chart/graph/website online or in a ebook that has a clear concise list of special matrices used in physics? I'm just getting into an intro to quantum mechanics class and we are going over all types of matrices, Identity, hermitian, diagonal, transpose, unitary, and so on. I want...

https://www.washingtonpost.com/national/health-science/us-universities-still-at-top-in-scientific-innovation-but-asia-is-catching-up/2015/09/21/cc09a2d8-5d56-11e5-b38e-06883aacba64_story.html The United States is still occupies the top spots for scientific innovation in universities, but Asia...

The problem https://i.gyazo.com/66f03e2caa6ee751adc02e3535287e74.png Find the next element in the list List 1: 2, 4, 8, 16, 32 List 2: 1, 4, 9, 16, 25 List 3: 1, 4, 7, 10 List 4: J, F, M, A, M, J List 5: Symbols, see photo My approaches List 1: This one seemed obvious. Any given element is...

Homework Statement I have a binary tree. I need to print a path of a doubly circular linked list (0 and 1) after every user input. I have a code in which user inputs data about one person. For example, when user inputs 2 elements, the path should be 0->1. In my code, it won't print any path...

Homework Statement Can you create a list of which functions increase towards infinity the fastest for limit solving? Homework EquationsThe Attempt at a Solution I'm trying to make a list from least speed, to fastest speed, in approaching infinity. As in, if you have a limit, and it has...

CAn anyone explain how this program in Fortran on linked lists is supposed to work. Actually it does work but I can not for the life of me follow the logic behind it or what is going on. I did some Fortran programming in F77 but now with this new 'pointer' type it is about impossible to...

Why are "Arrivals" displayed, along side the more important "Departures," within the secure areas in airport terminals? (By that I mean in the public areas that you need a boarding pass to get to, and areas that are within the secure side of the security station.) [Edit: I understand the need...

Hi, Could someone please tell me at which point in learning maths do you begin to write and solve proofs? I have taken high school maths so far except for discrete math. If there is a list of different maths that lead up to proof writing, please let me know of them and in which order I...

Homework Statement So I'm currently modifying an example Symbolic Regression program that uses genetic programming, a type of evolutionary algorithm. I'm using the python deap library. Not sure if anyone on here is familiar with it, but I think that the error is more general to a misuse of...

This question is for the scientists and academics out there. What books on the scientific disciplines do you wish Science Fiction writers would read? I can think of books written by people like Brian Epstein and Michio Kaku. Another source would be textbooks. Anyone out there have any thoughts...

I notice there are some functions in Mathematica in which you can't supply directly, an array of arguments but rather must give it a list. For example, GCD and LCM. I can use for example, GCD[2,3,8] and it returns 1. However if I code: GCD[{2,3,8}], the function call fails. I know of one way...

This seems like a fairly common technique but I'm fairly new to programming and don't quite know what the proper terms to find such an algorithm would be. In my case, it seems like a list of all possible values would approach almost a billion, and I feel like there's a quicker approach to...

I need to write a code that finds element x in a skip list. I need to implement that in O(logk) expected running time, where k is the location of x at the list (i.e., there are k-1 elements before x in the list). I know how to do it at o(logn), but not o(logk). can you show me the way? I need...

Hi there, I've been reading a textbook on Physics as applied to nuclear medicine, in particular focusing on how photons interact with matter. The textbook states (without reference) that "there are nine possible interactions between photons and matter, of which only four are of significance to...

Homework Statement I am implementing a singly linked list but when I am in my main method, to add into my singly linked list, nothing happens.Homework Equations [/B] None The Attempt at a Solution I am trying to implement a singly linked list. My singly linked list, where I implemented a...

All of these PF original Math FAQs can be found in the STEM Learning Materials forum PF Insights Blog https://www.physicsforums.com/insights/postindex/ 48÷2(9+3) and similar The number zero What Are Eigenvectors and Eigenvalues? Cardinal and ordinal numbers...

* FAQ entries are slowly being migrated to the Insights blog https://www.physicsforums.com/insights/category/faqs/ Do photons have mass? Will All Matter Be Converted to Photons? Does gravity gravitate? A Geometrical View of Time Dilation and the Twin Paradox Can I send a signal faster than...

PF Insights Blog https://www.physicsforums.com/insights/postindex/ Was the early universe in a disordered state? Why is the radius of the observable universe in light-years greater than its age? Where did the Big Bang happen? Would that be the center of the universe? What is the total...

I would like a list of ways highly accurate to solve the equation: E - e * sin(E) = M I can solve this with the Newton Method: M = 2*pi/3 e = 0.002 E = pi d = 0.01 Do While SQRT(d^2) > 0.000001 d= (E - e * sin(E) - M) / (1 - e * cos(E)) E = E + d Loop This is not very accurate. Is...

Hello! (Wave) I want to write a $O(n \lg k)$ time algorithm in order to merge $k$ sorted lists into one sorted list, where $n$ is the total number of the elements in all the input lists. I tried the following: We create an array with k elements, where $A[i]$ is the firstunused element of...

Most probably, there was already a thread about this before, but I didn't find any with the search engine. Please, believe me, I tried a lot of words and found nothing like I'm going to ask now. I'm not a physicist...in fact, I'm a Political Sciences student with a great passion for Philosophy...

This is by no means a complete list. It is constantly revised. This initial list is compliments of @ZapperZ. Please contact a mentor if you'd like a journal added. Links to each journal will be added in the future. Nature Science Physical Review Letters (PRL) Review of Modern Physics Physical...

Hello everyone... I've been trying to make a list about moderator materials used in nuclear reactors. So far I've found some but still wondering if there exists more than I learned and also wondering if they are correct. Please see the list below and feel free to correct my mistakes or to add...

There are numerous places I'd like to see in the next few years before I physically can not do. Alaska is one place, particularly Denali. An Alaskan Adventure — Ice Road Trucking Under the Northern Lights...

I know that steel and titanium have fatigue limits. Just to clarify, metals or alloys with fatigue limits are metals that - as long as they experience pressures that lower than the limits - can last "indefinitely". Aluminum, for example, does NOT have a fatigue limit. No matter how small the...

I know that steel and titanium have fatigue limits. Just to clarify, metals or alloys with fatigue limits are metals that - as long as they experience pressures that lower than the limits - can last "indefinitely". Aluminum, for example, does NOT have a fatigue limit. No matter how small the...

Hello! (Wave) Consider a singly-linked list L each element of which is a struct with two fields, an integer num and a pointer next to the next element of the list. Describe an algorithm that gets as argument a pointer to the first element of the list L and that creates a new list L' that...