Information Definition and 999 Threads

Primary Issue CNN's Email Archive of Sarah Palin I am personally on the fence about this, and am very interested to hear opinions on the merits and disadvantages of this type of action (the media posting the entire email-log of a politician for public consumption). On one hand, I am all...

Homework Statement I haven't studied thermodynamics and we have just a very brief use of thermo in my power plants course. I have read that entropy always increases, universe tends to disorderly state from an orderly state. The teacher related this to probability that nature tends to go...

Hi, I'm an 11 year old kid and listened to an iPod podcast several months ago that repeatedly reference to a quantum computer. It was painstaking not knowing what it was, so I went in search of good articles on quantum information. I found a very good one that explained about quibits...

I know DNA gives instructions for proteins, but is it information as in the sense that it was created by a conscious mind? What about biologists who say that DNA is information?

Good day, I have been given the task to create an inventory database for the books at the library at my school using the RFID to monitor the books. However the books have specific codes based on their type and location in the library. I was wondering if someone could give me some information as...

Hi, although I've studied info theory briefly in the past, now revisiting it, I seem to be scratching my head trying to understand the counter-intuitive logic of it. For instance, I understand that the amount of uncertainty associated with a symbol is correlated with the amount of...

Information for/properties of fuse wire Homework Statement Recently in physics class we were doing a practical activity, in which we were asked to obtain the value of Young's Modulus for certain materials. One of the materials we tested was fuse wire. Here's where the problem comes in...

Hi! Can anyone (or everyone) explain to me some areas of information technology and what jobs exist there? It's one of my few options and I would like to know more about it. What kind of jobs there and your opinion about that career in future? Thanks in advance.

What is the consensus here about Information Theory beyond the Standard model? The three fundamental theories of the universe, relativity, quantum mechanics, and the second law of thermodynamics all involve limitations on the transfer, accessibility, quantity, or usefulness of information...

We break down the received light stectrum from a star into the individual wavelength components. From it we claim to know its composition, heat, distance and speed. Aren't there way more unknowns that knowns? For example, consider any arbitrary observed star with a certain color distribution...

May I please have help with this question? I am especially confused about part e, but I would really appreciate it if someone could check my other answers? Thank you so much. I will put the answers that I have under the question. As packets travel from host to host, they may be temporarily...

Homework Statement In order to achieve a high result in this chemistry assignment, I need to have demonstrated a knowledge of challenging content not discussed in class. Every other part of this assignment I've covered (Intro, method, discussion etc), I am just stuck with the calculations...

Is light the only type of information we get from intergalactic bodies? Is there any other type of information? Thank you

Hey guys. I’m new here, so just a little about me so you guys can understand my situation. I was dead-set on studying Mechanical Engineering in order to study Automotive Engineering in the future… However, I’ve been having second thoughts. I’ve been toying around with the idea in my mind...

I have a simple question: can we assume that a photon is the basic unit of information? And the photon movement is the information flow? It seems strange, but wherever I try to find anything about information flow basics, there is no mention about photons. Shannon's or Mazur's information...

Hi, Not sure if this is the correct sub-forum or not. Perhaps, general math is better. Anyways.. In the following, a simple reference covering what I am after would be very helpful. Let's say you have a 4x4 grid of cells each cell contains either a 1 or 0. Let's say it is this...

1. This problem has been slowly eating me for the past 2 hours. I've done everything I can but I can't seem to answer it. The pH at the equivalence point in the titration of 100 mL of a 0.1M monoprotic acid solution with a 0.1M strong base solution is 8.12 at 25 degrees C. What is the Ka of the...

I'm doing a physics fair on gyroscopes but I absolutely can not find good organized information. I looked up almost every link from a google search but most sites are crappy. I even looked in 2 libraries but no books are found. How can this be? I thought gyroscopes have been out for a long...

Hey there, I was pointed to the article attached, where I am meant to find an answer as to why in the proposed quantum eraser experiment, only 50% of the time 'information' would be erased - if that was the option chosen. On page five of the PDF, there seems to be some form of explanation...

Some physicists say that the Universe at it's most fundamental level is an information wave. Is this true, false, or unknown?

Dude, what the ****. I apologize for the language, but this IS THE THIRD TIME I HAVE TRIED TO WRITE THIS. I HAVE SPENT TWO ****ING HOURS TRYING TO GET THIS QUESTION ACROSS. and of course its been ruined now. twice I have composed a question I really want some answers to and apparently you can't...

Homework Statement An insulated Piston-Cylinder device contains .6kg of H20 at 600kPa Initially the volume of the system is .6m3. Now an electric resistor is placed in the tank and turned on for 10 minutes until the volume doubles. Show this on a T-v diagram What is final temp? What is the...

Hi folks, it's been a long while since I've posted here, but, I need help. I'm trying to write an article for the "Space News" board on another forum I'm a member on; about inter-galactic voids and supervoids. The problem is that I keep finding measurements for their size in both megaparsecs...

What is the best place to do a PhD in quantum information? I want to do research on quantum entanglement and quantum teleportation.

Hi, I am using the hough transform to perform circle detection. I am able to perform a hough transform and plot the results, but how exactly do I now take my hough transform to actually get meaningful information. I know the size of the my circle (it's radius), but what information am I looking...

Hi everyone, neat forum you got here. This one's been bothering me for a while, I hope you can help me. I've often seen this question satirized, but I've not yet come across the answer. I've often heard it asserted that information of any kind cannot be transmitted from one place to another...

Summer workshops/summer symposiums/etc? Most of them are for graduate students. But do any allow people who are in between undergrad and grad school? And how competitive are they? I'm specifically interested about astronomy, but people can feel free to post details about any summer...

Hi everybody, I ve been thinking a lot lately about the thesis I am supposed to start next year. I will study the categoric formulation for quantum mechanics, polytope correlations and links with the complexity theory (post quantum models etc). But on the other hand, I find my courses on...

When (almost any) system emits gravitational waves, does information carried by these waves also 'counted' as an information about a system? In case of BH informational paradox, when BH dissapears, we get not only Hawking radiation, but also information encoded in the gravitational waves of...

Can you please recommend me some literature about black branes? Thanks

I am a Computer Science major and as of now, I am starting to feel like this is not want I want to do with my life. I want to be involved in the management aspect of technology. I don't know which degree will take me there. I am currently taking Data Structures and I hate that class. I feel like...

Just learned that diffusion equation loses information as time goes on,i.e. given the initial condition at t=0, we can't uniquely determine the solution for t<0. And diffusion equation reminds me of Schrodinger equation, which looks very much like diffusion equation, except that the coefficient...

First, sorry if this thread ends up repeating some information covered elsewhere. Alright, OUTSIDE of academia, how are people with math/applied math/physics PhDs (not engineering) faring in the job search? On the one hand I'm hearing from everyone that the unemployment of science PhD holders...

I'm looking for an appllication of Information Theory applied to processing/broadcasting of an audio signal, but i have no idea. Do you know any books where i can look for this subject? Thank you in advance.

I was discussing with my E&M professor the idea of faster than light information exchange, which of course we found to be impossible, it didn't take much analysis of the simultaneity of events as seen by Einstein to realize that faster information travel than light would completely change the...

I understand that the Dirac delta function can be taken as a distribution. And that one can calculate the Shannon entropy or information content of any distribution. So what is the information content of the Dirac delta function? I think it is probably identically zero, but I'd like to see the...

The speed limit in a school zone is 40 km/hr. A driver traveling at this speed sees a child run into the road 13 m ahead of the car. He put on his breaks and decelerates at a rate of 8.0 m/s^2. If the drivers reaction time is .25 s, will the car stop before hitting the child? a= - 8.0...

I am still searching the net for information on the actual hardware used for the which way detector(s) in the double slit experiment(s), and descriptions of the experiments as really performed in the real world. I am NOT referring to the "screen" at the pathway termination used to detect the...

Hi I have read that a computer could retain any information as long as its user desires or unless it's nor broken. On many hard disks and USB Flash drives I have seen that the duration of how long the drives could retain the data safely is mentioned, let's say 100 years. What does it mean? To...

I've always wondered about how thing like the pyramids, the sphynx, stonehenge, etc... become mysteries although the area has supposedly been continually occupied since their creation. I mean in every generation aren't these things odd enough that someone would ask "what is that and where did...

Hi Guys, How you doin? I am new to this site and from Philippines. I am a secondary teacher here in our country and I am teaching the subject Physics and Chemistry. I just have a question. Where to acquire accurate information about UK visa? I was offered a job in UK together with my...

Homework Statement The figure shows a view from above of two objects attached to the end of a rigid massless rod at rest on a frictionless table. Imagine a vertical rod, on the top end is a mass of m, an the bottom is a mass of 2m. The length of the rod is L and L/4 down from m (at top), a...

Is this a paradox? We have a satellite orbiting at a significant amount of the speed of light around the earth. Hypothetical numbers: The satellite ages 6 years; while the; earth ages 7000 years. How does the satellite communicate with Earth or vice versa? How is information...

Hi friends, Presently I am in my 1st semester of my Masters and have taken course on Basic controls and Modeling, I don't have any course on Vehicle dynamics offered in our University. So can you please give sources and videos where I can get basic dynamics of vehicles so that I can apply the...

Information is a form of energy?? Hi all, I recently read an article on economist about Maxwell's Demon. It is mentioned that someone disproved Maxwell's demon by considering the information you need to determine whether you should let the air molecule to go to the other side. This required...

Given a finite volume of space, can a finite amount of matter and energy store an infinite amount of information?1 Given x grams of matter, y joules of energy, and Z ml of volume, does the amount of information that could be stored (states that each bit of matter / energy could exist) diverge?2...

Hi, we friends were discussing about data speeds, bandwidth and frequency when this debatable question came in mind: How much data can a wave carry? well, we all are aware that there is a bandwidth (consider gprs) which is capable of giving some speeds to download...when using on a mobile...

Hello all, this is my first post here. I know these things have been discussed before in this forum, but that was several years ago, and I have some questions that weren't asked. Basically, I need to know how information is stored in the brain, presumably as memories. What I already know is...

Photons carry energy information and the orthonormal location information. So in Youngs slits the energy - color - can be determined and the origin of the photon through interference triangulation can also be determined. Upon decoherence location and energy values are 'read' by the observing...

I have been doing some research on Leonard Susskind and how he claims information is conserved. I don't think if we reverse time we will get back what we started EVERY single time. Thinking that information is conserved really doesn't make sense to me. What do you think? If you agree with me...