Information Definition and 999 Threads

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...

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...

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...

I find this whole thing rather ridiculous, his attorney's attitude seems hard to believe. http://news.yahoo.com/s/yblog_thecutline/20101220/tc_yblog_thecutline/assanges-lawyer-wants-investigation-of-leaks-about-assange Although his behavior is more in line with those of a crude and...

During the inflation epoch, the universe expanded faster than c. Does theory allow information during this time to travel faster than c?

What is the greatest theoretical information density? I don't care if you can read the stored information or not. From what I understand, DNA currently holds the record for information density.

Hi Guys, I am in real dellima to take between this course. Obviously I prefer theory but I know my limitation too. Can some one shade between this 2 course which one is really good not interms of employment but interms of knowledge and content. I might decide between this 2 course for my grad...

I was wondering if anyone has tips on retaining information. I already completed Calc I and II, finished both with 93+ and yet 6 months after my Calc II course, I feel like I forgot a great deal of what we were teached. For example, I remember we learned about series in Calc II, such as...

This morning i spotted this paper. The concept of information is hot at the moment. but what is information ?.. http://arxiv.org/abs/1011.5039 Classical Information and Interpretation of Quantum Mechanics Authors: Marcin Ostrowski (Submitted on 23 Nov 2010) Abstract: This work is a...

this may have been discussed before, blame it on bad memory if so. the ability to recall and retain information is fascinating in that as we age our bodies and brain constantly replace and regenerate. so this begs the question? what happens to the information? we can see the locations in the...

hi! Every time i stumble upon quantum physics I get to the same example, where the subatomic particles (photons i suppose) behave like particles in a particle experiment, and waves in a wave experiment. Then the conclusion is that the particle becomes what the observer measures. I'm just...

Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 1.13 m. Two of the spheres have a mass of 2.97 kg each. The third sphere (mass unknown) is released from rest. Considering only the gravitational forces that the spheres exert...

I am wondering if anyone here conversant with information theory could tell me what the difference is in potential information content between 3 dimensions and 4 dimensions.

Does natural selection apply more to information in general than just to genetics?

I am a MaSc student in electrical engineering. In my undergraduate degree I focused on controls and now want to do a thesis on implementing controls other than PID in reactors. I am looking for a good source of information on controls systems in nuclear plants and the modelling and simulation of...

Homework Statement find f from this information f'(x)=ax+b, f(2)=0 Homework Equations The Attempt at a Solution if you integrate f'(x) treating a and b as constants you get f(x)= ax^2/2 + bx and if you substitute f(2) you get 2a+2b. that's all i could get... don't know how you could use...

Given the recent discussion about a possible formulation of holographic principle, and also what geometric notions suchs distance and area may mean without prior metric I thought I'd throw in this suggestive comparasion out for discussion. I feel the discussion is still too much tied to...

I'm looking for a good source of information on electromagnets. Does anyone know a good source?

Hello, I am searching for the equipment used in the Youtube/BBC video posted below. I have looked for contact info at Cologne University, but a lot of their sight was not translated over to English. Specifically, I am searching for the barrier used in the video. Also I hope this is the...

The area of the triangle in the attachment has to be found. It is not stated in the question what kind of a triangle it is nor are there any angles given. I believe that there is information that has been left out of the diagram to solve this question (This is a question in a maths...

Here is the problem word for word: Isaaic and Blaise decide to race. They both start at the same position at the same time. Isaaic runs at 2 m/s but decides to take a 2 minute rest stop. Blaise runs at half the speed and still wins by 10 meters. How far did Blaise run? I can use only...

The Information Theory and Cybernetics (Shannon, Wiener) and the perspective of some physicists (Schrödinger) was very influential on the development of Molecular Genetics. The molecular genetic approach showed its power to explain a lot of biological and medical problems, from evolution...

How does information leak out of a black hole ? How is particle and anti-particle created in the Quantum Vaccuum of a Black Hole?!

If I were to have some material, that was rigid, and was also say, 300,000,000 metres long. If I were to poke it at one end, would another observer see an instantaneous response at the other end? Ie, would the information I put into one end of the material travel faster than the speed of light...

Homework Statement I've got a manchester encoded binary data. The question reads, Determine the beginning and end of bit periods (i.e. extract clock infromation and give the data data sequence How do I do this? I think its a simple question but I am having difficult because i don't know...

Suppose there is a person, Joe, who can get a piece of information through research that has a cost to Joe of $2 million. Suppose there are 100 people, and the information is worth $25 thousand to each of them. The question is, how can the 100 people organize to pay Joe what he needs, so they...

Does "The Merck Manual of Medical Information, Home Edition" also prescribe or list some of the medicines which can be useful for the listed disease? Please let me know.

Hi everyone, I'd like to start by saying that I have no background or knowledge of maths other than high school. As a consequence, I have no idea if this question is stupid, trivial, nonsensical or whatever. I also don't even know if it's in the correct thread (I made the best guess I could). So...

I don't understand. Why can't we use quantum entanglement by the means of altering a state of an entangled electron so we can send an instantaneous bit of information to anywhere in the universe infinitely fast by the other electron changing its quantum state? We can can in theory transmit...

What started as a simple project, has become an out of control line of thought and a possible distraction, but one I think is worth picking up again. Several years ago I looked into the cost of solar for my home and the rebate that the city was offering for an approved installation. The cost of...

Is information energy? This thread was inspired by a conversation https://www.physicsforums.com/showthread.php?t=419343". I thought we got a little off topic, but the conversation is worth continuing. The idea seems to stem from http://en.wikipedia.org/wiki/Landauer%27s_principle" that states...

If the cells in our body (including brain cells) are replaced every 7 years, then in a sense we should be completely different individuals than we were 7+ years ago. But to us, we sense the sameness in consciousness throughout our life. How can that be? My belief is that it is the...

I have attached a lecture note which is meant to provide understanding on the following learning outcomes. appreciate the distinction between the macroscopic and microscopic views of matter understand the main qualitative differences between solids liquids and gases at the microscopic...

i was thinking if we could transfer information to energy? what is the nature of information? can it be non-mater? (just bs )