Reading Definition and 636 Threads

Good day. I have recently become very interested in magnetic stripes; how they store data, how the data is read etc. They are something we use every day in our lives but what few people fully understand, and as a result, there is little documentation avaiable (from what I can find) that goes...

Can anyone provide me with insights on limits? Like L' Hospital rule (don't know whether spelt right), and product rule such as lim_{x\rightarrow\a} [f(x)g(x)] = lim_{x\rightarrow\a} f(x) \cdot lim_{x\rightarrow\a} g(x) should lim_{x\rightarrow\a} f(x) and lim_{x\rightarrow\a} g(x)...

Hi All, I have attached a bmp file indicating the diagram. Now, in the diagram shown alongside the cell and the ammeter both have negligible resistence.The resisters are identical with switch K open. the ameter reads 0.6 A . what will be the ammeter reading when the switch is closed? Few...

Is it possible for the mind to comprehend so much information that it barely has time to recognize? Can some people really read 10 novels a week or is this unreal? Are only moderately above average speeds possible? - Jake

Hi I am reading the book "Introduction to logic and the methodology of deductive sciences" and I'm doing my best on understandig it and so far so good, but I ran to the example of the book: " for any number x, if x=0 or y not equal to 0, then there exists a number z such that x=y.z" I just want...

So, what's everybody currently reading, textbooks excluded? Currently I'm working on The Count of Monte Cristo. After this I want to start Don Quioxte. Both of these books, I've been wanting to read for a long time. I'm glad I'm finally getting to them. The new Michael Crighton book is...

Homework Statement A physics proffessor leaves her house and walks along the sidewalk toward campus. After 5 minutes, it starts to rain, and she returns home. Her distance from her house as a function of time is shown in the figure below.(ignore the paintbrush just assume that its a curved...

Homework Statement http://img265.imageshack.us/img265/4572/graphrj8.jpg (The particle starts from rest at the origin.) 1: What is the velocity at t = 5s? 2: What is the position at t = 5s? The Attempt at a Solution I'm thinking -2 m/s velocity and -8 m position at t = 5s, but...

Hey guys, I was wondering if anyone knows of an open source solution for reading in a black and white image and converting it to text (preferably in a text file)? I've tried Google, but I could only find online generators. Thanks.

Sorry to bother you all with a trivial question. I'm a Belgian teacher and I'm struggling because I don't know how to read a formula in English. How do you pronounce the apostrophe in for example v'. In French we say 'prime'Can anyone help?

When solving a problem, the last thing you want to do is look at the solution. When you're trying to prove a theorem, axiom or whatever, is looking at a proof something that would impede your learning? To me it seems that the answer is yes. Looking at a proof removes the thinking process so...

Does reading or studying while listening to music improve or worsen your mental process?

A pulley Problem Homework Statement So, in the diagram attached one mass is 1 kg, and the other one is 2 kg. and what would be reading on the scale Homework Equations F=ma The Attempt at a Solution I think this is very much like an elevator problem where the elevator is moving...

Happened to come across this qn: Noise from receiver is measured by rms voltmeter with bandwidth 100khz, and voltmeter reads 2mV. what will be the reading for multimeter set to read dc voltage and bandwidth of 10khz? My ans is 10/100 x 2 = 0.2mV. cos smaller bandwidth reduced by a factor...

Which is more strenuous on human eyes? Because i do plenty a lot of both of them. If i learn that one is less strenuous than the other, i wil probably start spending more time doing that instead. Btw, i have an LCD monitor, which I've heard is better than a regular monitor, but it kind of just...

Any suggestion on how to improve your reading fluency with proofs of theorems? It's frustrating to spend over 1 hour to read a proof of a theorem that is under 1 page long (or not understanding the proof altogether). Even when every subtopic within a proof is already known, I find that...

What's next? A quantum-foam soap opera?! Download the novel for free in pdf. http://www.hep.phys.soton.ac.uk/~evans/NL/ (via Not Even Wrong)

I'm trying to write a program that will have the user enter in an expression in the form: A (operation) B (operation) C and print out the result. After the user enters in the expression, I want to parse out each individual digit or expression by reading the ASCII code of each individual...

http://www.bbc.co.uk/berkshire/content/articles/2006/12/06/divide_zero_feature.shtml papers: http://www.bookofparagon.com/News/News_00012.htm What do you guys think?

Hi, I have a text file with 3 columns (latitude, longitude, & station name) and 51 rows. Using fscanf I am able to read the first row of the file but not the whole file. Any ideas of how to read to the end of a text file that contains both numbers and letters? This is what I have...

Behold Halliday's Question and Halliday's answers: The only force acting on a 2.0 kg body as it moves along the x-axis varies as shown in Figure 7-41 (see attatchment). The velocity of the body at x = 0 is 4.0 m/s. (a) What is the kinetic energy of the body at x = 3.0 m? 12 J (b) At...

Sorry, this sounds like a silly but I grew up in the age of auto-ranging multimeters. Say you have a scale, 1 to 10 and you select your scale as 1 miliamp. I presume if the needle is at 7 then that means 7 miliamps and NOT (7/10) 0.7 miliamps?

I'm writing a large amount of data to a binary file. Trouble is, I don't know how much until the program finishes executing. Given this, I'd like to rewind back to the beginning of the binary file and write an element indicating how many records I wrote to the binary file - this way I can...

Hi! for (int i=0; i<=9; i++) { for (int j=0; j<i; j++) cout << " "; for (int j=i; j<=9; j++) cout << "*" cout << endl; } Can anyone explain me what these lines are doing? Thank you!

after reading the FAQ on how phonons, or modes of vibrations, are responsible for the slowing down of photons in dense materials, i still have some unanswered questions: i visualise phonons as something like qualities of a field, because they coordinate the deviant behavior of individual...

I wasn't sure whether to put this in S&D, but here we go. I've found that I have a really strange ability to tell what people are feeling/thinking. It doesn't occur with everyone, sometimes it happens straight away, sometimes after I have known them for a while. Often I meet someone and just...

i was doing some reading on Newton's law of universal gravitation. the equation is given as mass of 2 objects divided by distances square and then multiply by gravitation constant. using 50kg and 100 kg mass and a distance of 2 metres i get a value 8.34e-8 N this a small force, which sets me...

Hi new here, I'm getting into this field of theoretical physics, and I have a goal to read several books over the summer. Currently reading Brief History of Time I guess because of its popularity. here is the list A Brief History of Time by Stephen Hawking Hyperspace by Michio Kaku...

So, what are you currently reading? Is it good? Bad? I'm currently reading "God in the Equation" by Powell. It's alright I guess. I haven't read a Physics/Cosmology book in a long time so it's ok. I would read two of them in a row. Since I'm almost done I'll be looking for another...

As I was reading about photons, Some of the information was puzzeling for like; photons have no mass or that they don't have a kinetic energy. I understood having a zero mass at rest but when traveing with the speed of light the photons should gain a mass ( I think ) because of 2 universal...

I was reading about the ID/Evolution conflict and saw some of the arguments aginst evolution. Some of them were pretty convincing: 1) I the first human on the moon would find a clock, no one would believe that the clock got there "by chance", it'd be easier to believe that aliens (or the...

what is your reading speed?? And if by the way,it is high..what factors are responsible for that.. Have you ever seen anyone having a reading speed of 3000 or more than that...i don't know how that's possible,,doesn't it mean the person has enormous control over his mind..

If i have a barometer which reads 76cm of hg when kept in an elevator when the elevator is at rest . now the elevator starts going up with some acceleration . will the barometer read less than , greater than or equal to 76cm of hg . also explain why . what will happen if the barometer is under...

I was wondering why Henry Moseley ploted \sqrt{f} vs. Z instead of just f vs. Z. I'm guessing it is because this way, the graph of \sqrt{f} vs. Z would be linear? But if it was just f vs. Z, wouldn't the equation just be exponential? Also, what is the significance of the L seriese and the K...

hello everyone, this is my first post on these forums. yesterday i was at the local B&N and bought stephen hawkings "a brief history of time". I've never taken a physics course, though I've wanted to in past semesters(without calculus) but it has always interested me. in the space-time chapter i...

When was reading about renormalization I did no understand the main Idea of the last :(:confused: It has been considered photon propagator with virtual pair of electron/pozitron. Takeing that loop integral the M^2 cuttoff is introduced, which tends then to ininifity, M^2 is "sopped up" in...

i was reading simon singh's the code book. it describes different systems of cryptography. but what i wanted to know was how to 'crack' different ciphers. can any suggest anything i can read. thanks to anyone who can help.

My ability to scan left-to-right surpasses that of scanning right-to-left. Could this phenomenon be substantially brain based, my having learned (neurologically developed) to read left-to-right? Do peoples who differ in direction of reading differ substantially in brain structure, like a...

hey everyone, I'm going to be starting my first year as a physics major, I was wondering if there were any books that anyone would recommend, textbook or othereise that I check out. I was thinking about getting the Feynman Lecture on Physics. Any suggestions? Thanks :smile: dleacock

I have to read a list of strings in from stdin and store them, stopping when a blank line is entered. Here's what I tried... const int LINE_CAP = 100; const int MAX_LENGTH = 80; char *strings[LINE_CAP]; int strings_index = 0; char buffer[MAX_LENGTH]...

urgent help needed http://www.physik3.gwdg.de/~rgeisle/nld/sbsl-howto.html Halway down that page is a circuit diagram. In the diagram wires don't lead to anywere(after the resister label R1 the wire doesn't go anywere), I don't that much about reading circuit diagrams but I know those wires...

I have a problem with reading... I notice that most lighting in combination with my books/textbooks really generates an awful glare. I know I can just tilt the book.. but in the case of a larger textbook this is often a problem (even if I put something underneath to tilt it). Anyone know of any...

During a physics prac today, we were using a traveling microscope with a vernier scale. My demonstrator told me I was reading the scale wrong, and as much as I tried to convince him otherwise he insisted he was right. Can anyone here tell me what the correct value to be read from the vernier...

Tell us what book(s) you have read recently and what you think about them. Be sure to add in whether or not you think it is a specialized taste that will enjoy a title or if you personally don't like a particular book but think others might. And try not to give away surprises!

Hi, I've come across some problems while reading a mathematics books. 1. The first problem is: \int \max (1, x ^ 2) dx My answer is: x + C, |x| \leq 1 \frac{x ^ 3}{3} + C, |x| > 1 But the book does not seem to agree with me. It reads: x + C, |x| \leq 1 \frac{x ^ 3}{3} +\frac{2}{3}...

Hi, I am just getting into building circuits. I have found a nice page with all the symbols: http://library.thinkquest.org/10784/circuit_symbols.html which has helped me some but I still get confused. The circuit I am talking in regards to is this...

I'm not sure where this thread would go, but here it is... I am reading about the property of satisfiability. And trying to get some things straight. I saw different kinds of logics (porpositional, relational) being tested for satisfiability. I've read about models and formal systems. The...

reading Smythe's book on "static and dynamic electricity" Hi, I am reading Smythe's book on "static and dynamic electricity" (1st edition, 1939) and I'm having trouble deriving some of the formulas. I wonder if someone already corrected that. For instance, 1.10 - Gauss's electric flux...

My hair is cut short enough so that it's pretty much straight, like a wiffle only longer, and the other day I was sitting waiting for the bus in the late afternoon and reading a book (the Medea). The sun was behind me and the hair on my head cast a shadow onto the book. As I turned my head...

hi all, i've taken a junior level QM course using griffith's introduction to QM text. I've been wanting to review and broaden my exposure to quantum mechanics a bit over summer and was wondering if anyone could recommend any texts they've found to be excellent. currently I'm looking to read...