Reading Definition and 614 Threads

Hi everybody, I have just joined this forum and I have a problem in fortran programming. I want to do a program in fortran where in the do loop it will read an input file from the first line upto a line and again it will go to the starting line of the file in the next loop and read...

The book is "The New Physics and Its Evolution" by Lucien Poincare, who happens to be Henri Poincare's cousin, and I came across a paragraph that explained an experiment that has me baffled. Anyone know to which experiment he was referring? Perhaps something was lost in the translation...

Dear Physics Forum, I have currently been reading Charles Carrolls Chaos Theory which uses the experiments of MIT meteorologist Edward Lorenz to develop linear relationships between speed and distance which has led me to a few questions that I’d like to ask. I wanted to know if it is...

I passed my statics course and am currently taking material stength course. The thing that has been on my head is the fact that, although I know how to do shear and bending moment diagrams... I do not know how to READ them. In other words, the diagrams don't mean anything to me. For...

Here's a part of my program in which I'm having an error while compiling: open(unit=1,file="tabla.dat") allocate (x(n),y(n),f(n)) do i=0,n x=(2*i)/n-1 f=1/(1+25*x**2) write(1,*)x,f end do do i=0,n read(1,*)x(i), y(i) end do close(1) I'm having the error with gfortran: "Fortran runtime error...

In a book I'm reading, it says: If beta is orthogonal to the set A, then beta is orthogonal to the closure of the linear span of A It's easy to see beta is orthogonal to the linear span of A, but I don't understand why it has to mention closure here?

Hey guys I'm looking for some good reading material on the following extrasolar planet detection techniques (not sure if there are any other...) Radial velocty Transit monitoring Microlensing Detection of IR thermal emission Direct Imaging. Basically I'd like to read about what these...

help me with this vector program i want to create a program that will have an arraycalled array1[] of 30 sets of 3 one digit numbers i.e 804, 450,430 etc) i will have 13 vector containersor arrays defined with a series of 3 one digit numbers. i want the program to find any series of numbers...

What do you think about this reading style ? Iam used to passively read a textbook in physics or math to get a picture about what this is all about then I Actively read the text carefully with a pen and papers . Passive reading makes me cover a lot of material in a relatively short time for...

What you got for me baby?

I'm just finishing my first year at community college, and I'll be there again in the fall and winter. After cc, I'll be transferring to a university to major in astrophysics. I'm taking physics and calculus at my cc, so I want some supplementary reading for the summer and after. Any good books...

Hello, I don't know if I'm posting this in the right section because I need help with reading EKG graphs (and I've never had any experience with them), but I'm doing this for my physics lab class. I attached the graph I need help with. So basically, one period on the graph means one...

Homework Statement Write a program that reads the time, temperature, pressure, and volume measurements from a data file like : 0900015001990700 1000019602210877 1100021202790925 1234034203221015 1300038803221121 1400044803241425 1503051303201520 1604055503181665 1700061303191865...

Alright, well, I've decided to start learning about how circuits work and as part of that I've looked into getting an Arduino, either by building one myself or buying one. I came across this tutorial here: http://www.instructables.com/id/DIY-Arduino-or-The-DIY-Duino/" I noticed that the design...

How do you know when to move on from reading the text and going to problems? Also, when making notes from a physics text, what should you be making notes on. I find that when making my own notes, I'm just re writing the textbook and having pages of notes at the end which take a lot of time to...

Hi , I want to be able to read and comprehend easily Current research on HEP ( High energy Physics ) . I 'm quite familiar with quantum field theory and I'm Currently learning General Relativity . But I think there is a big gap of knowledge that exist preventing me from this . I also want to...

I use gcc to compile the code. When I run the program, I get segmentation fault (core dumped). ranked_galaxies.txt: # PGC Name RA DEC Mass Distance Diameter Tile_Number Rank_stat 37617 NGC3992 179.399700 53.374450 2.290868 22.909000 5.613000 1 2.51796409431e-05 62964 IC4837A...

What do some of you do when reading a physics textbook and listening to lectures. I need help imprinting the concepts in my head.

Barometer reading in an elevator... Homework Statement A barometer kept in an elevator reads 76cm when it is at rest. If the elevator goes up with increasing speed , the reading will (a).increase (b)decrease (c)remain constant (d) become zero... Homework Equations The Attempt at...

Reading on a weighing scale... Homework Statement Two vessels have the same base area but different shapes.The first vessel takes twice the volume of water that the second vessel requires to fill up to a particular common height. IS the force excerted by water on the base of the vessel same...

Im finishing off my 1st year of general sciences in university, and I'm really interested in the first year courses I took and am thinking about perhaps making physics my major next year. Any recommendations on some good physics books to read during the summer? Not physics textbooks, I...

Homework Statement Hi I need some help with this problem. It reads this way: The manufacturer of a digital ammeter quotes its uncertainty as plus-minus 1.5% plus-minus 2 digits. a) Determine the uncertainty in a constant reading of 2.64A b) The meter is used to measure the current from a...

Hi, As a prerequisite for Bsc in Physics+Math I have to take a summer course in physics since I do not have sufficient background for the course of studies. My math background is high end high school level (complex numbers, trig', calculus etc') However the scope of the course is ...

I frequently get the same runtime error when using g77. Here is the error message: fmt: end of file apparent state: unit 16 named vi1.src last format: (F10.6) lately reading sequential formatted external IO abnormal program termination I have added to my code the REWIND statement...

Homework Statement Two rockets are sent off at t=0, one from x=0 and the other at x=4. The rocket leaving from x=0 is moving at .8c and the rocket leaving x=4 is moving at .2c. When the paths of the two rockets meet, they send a light signal to x=0. Read off the coordinates in the S frame...

Im reading about electroreception in fish, so I wanted to check something. If you look at the http://img94.imageshack.us/i/capturesrt.jpg/" you see this fish has some kind of electric organ in its tail which produces an electric field. That field is then detected on the front part of the body...

Hi, I'm writing an assignment for school and there is a paper on springerlink which looks like it could be of help to me, the site wants me to pay $45 for the single article but I think that for subscribers it is free. So I was wondering if anyone who is already a subscriber is willing to...

Thanks to a few posters here, an amazon wishlist, and my wife, I now have a few books to get through. I'm wondering how to approach some of them, especially the heavier material. As per Mathwonk's advice on reading the work of the old greats, I have "The Works of Archimedes" by T.L. Heath...

Hy. I need to read about the sun. What do you recommed ? Also i found some bibliography here but couldn't find. http://solar-center.stanford.edu/magnetism/bibliography.html

He shouldn't have been going through his wife's e-mail, but in my opinion this should be more of a moral problem than a criminal problem. In other words, he was in the wrong, but he shouldn't go to jail or go to court over something so stupid.

General Math "Light" Reading Was wondering if anybody would like to recommend or just discuss any general books you may know about concerning math in general, be it historical, biographical or some of the other general works that are out there. I'm curious about what I keep seeing in the...

Hey Guys, I have built circuits based on schematics before but this diagram, as it stands, is confusing. The IC is the 8284 Clock Signal Generator and I know the chip has a Vcc pin but according to the diagram, power is not connected to the Vcc pin but directly to ground. In fact that pin is...

I have trouble reading small print and have been told i am near sighted in one eye, but i have also been told if i start wearing glasses i will become more dependant of them, what do you guys think?

Homework Statement I have 1 class for reading parameter from file (example below) and 1 class for doing calculation For every step, I'd like to read in parameter and do calculation in between. For i = 0 to number of lines in parameter file Read in parameter; Calculation; End...

Hey i did highest beta thing in high school with math and physics and all (not sure what its called in english). Was never very interested in it, but it seemed the right thing to do. But that has been like 4 years, and recently after reading some popular books about relativity, string adn...

(before reading this, I'm currently enrolled in engineering, not math, which I switched from, so i don't deal with advanced proofs and such): Okay, so for my lower division math courses (using elementary textbooks such as stewart or lay), my method of studying was: -Read the book -Do all...

I really do not know which form this fits in. Recently I have been looking into getting an Ebook reader like the kindle to avoid things like printing massive amounts of material or reading on a laptop screen. So I was wondering what is the best ebook reader for reading things like Journal...

Hi, I'm wondering if anyone would be able to help me with the following problem: I have an input file in the form (values delimited by spaces): 0.0 0.0 0.0 Ga 0.5 0.5 0.5 As 1.0 1.0 1.0 In . . . and so on. (Basically it's a .txt containing x, y and z coordinates of atoms in a crystal...

I'm currently reading DF Lawden's book Introduction to Tensor Calculus, Relativity and Cosmology. He coverss the idea of translation of inertial frames in the beginning and by using Minkowski's device for the time coordinate, x4 = ict, shows that inertial frames moving at velocity u =...

Hi, I have been struggling with the Fortran IO for a while. Here is the question, any comments will be much appreciated. I output some double precision numbers with the format: write (file_id,'(6(ES17.10E3,2X))'), a,b,c,d,e,f ! say the filename is 'data.dat' It works fine. But...

Can anyone recommend any leisure reading books related to math/science? i.e. elegant universe by brian greene or feynman, etc.

I'm reading Max Born's "Einstein's Theory of Relativity", 1962 version. On page 297 he says that a wire with a current in it is electrically neutral and surrounded by only a magnetic field. Yet on page 161 he says that current in a wire is the result of an electric field. It would seem that...

I am no sure how to do this question? Do I have to use steam tables?

In my opinion, understanding is not discrete, that is, it isn't like you either understand or not understand, it's a continuous scale, so however well you understand something, you can still do it better. This idealistic view causes me some problems while reading textbooks. Even if I feel that I...

Homework Statement A scale is adjusted so that when a large, shallow pan is placed on it, it reads zero. A water faucet at height h = 3.1 m above is turned on at t=0 and water falls into the pan at a rate R = 0.16 kg/s. Determine a formula for the scale reading as a function of time t for t...

Hi, I have a bunch of images saved as .fig and I need to obtain the data in these files. I tried something as simple as image1 = imread('figure1.fig'); but it does not recognize the format. If anyone could help me out that would be greatly appreciated, thanks!

I'm a third year engineering student and recently I've been unable to complete any of my reading assignments for a logic design class. Mainly this is because I simply can't understand the material I am reading. After I read a paragraph, it's almost like I never read anything because I am...

Hi guys. I've noticed something weird about my vision. After I have been reading for a while, my vision becomes pretty blurry and I have trouble focusing on things (even distant objects, for a while). I think that I've figured out why; I noticed the other day that I hold what I am reading...

A woman stands on a scale in a moving elevator. Her mass is 60.0 kg, and the combined mass of the elevator and scale is an additional 815 kg. Starting from rest, the elevator accelerates upward. During the acceleration, the hoisting cable applies a force of 9410 N. What does the scale read...

Best background music for reading physics :) I have about 5 hours worth of reading ahead of me of hep-ph papers and was wondering if anyone has any favourites/suggestions for non-distracting background music. I have a couple of Beirut albums on this computer, and a best-of Chopin, but...