Information Definition and 990 Threads

Hawking, new theory on information paradox right or wrong? Does anyone have any views on Stephen Hawking amendment to his 30 year old theory of black holes and the *information paradox that was recently challenged? Once past the event horizon information is lost forever and only the energy...

I have been trying to work out some information about the Laws of Energy and have come to a stand still. For example if you take a molecule of water, it contains a finite amount of energy, e.g. you can't produce energy out of nothing (according to the laws of energy), so if it takes so much...

The Susskind "Counter Information Paradox? Recent programme here in the UK deals with the "Hawking Paradox",: http://www.bbc.co.uk/sn/tvradio/programmes/horizon/hawking_prog_summary.shtml The programme has two opposing views on Blackholes, Hawking take and Susskind's take on BH...

Hello, In my university there is a bit of a fuss about Quantum Information (QI). A few professors work in this field and there have been some conferences where they try to explain to the rest what is QI and so on. I think it is safe to say I know a bit of quantum mechanics, not at a...

Why can't "Spooky action" send FTL information? I understand that for two entangled particles, that if you observe one it will instantly affect the other. I can even understand how we can't make sense of what was observed without sending a "Hey, I got and 'up' what about you?" But what I...

Im currently a Navy Fireman at NNPTC, I am already experiencing the school and getting by... but i wanted to know, what kind of out look I am looking for in the future as far as civilain job markets or staying in the navy... thanks

Found this on Woit's: http://www.arxiv.org/abs/hep-th/0507171 Authors: S. W. Hawking Report-no: DAMTP-2005-66 "The question of whether information is lost in black holes is investigated using Euclidean path integrals. The formation and evaporation of black holes is regarded as a...

http://arxiv.org/abs/gr-qc/0507051 Authors: H. D. Zeh Comments: 10 pages, 1 figure, Latex - Invited paper for a special Einstein issue of Physics Letters A The existence of spacetime singularities is irrelevant for the irreversible appearance of black holes. However, confirmation of...

Hello everyone, I posted this question before also but did not get the satisfactory answer. So I am posting the question again with more specifications. My question is --- Suppose we have two planes intersecting in one line. Let one plane's normal be [3,4,2] and other plane's normal be...

SpectroscopyNow.com http://www.spectroscopynow.com/Spy/basehtml/SpyH http://www.spectroscopynow.com/Spy/basehtml/SpyH/1,1181,0-8-1-0-1-about_this_site-0-0,00.html the site.

Here's a novel new way of storing information: Give every symbol a code from 000 to 999. Write down the information in this form. Then the Key(Master) trick up our sleeve: Put a decimal point before it. Reduce the fraction to the simplest form. Then take a 6-inch platinum-iridium alloy bar and...

Entanglement and information seem to be the new buzz words in the particle camp, two theories that seem natural to me, but should include QG to make a workable quantum universe. If particles carry information by spin ,and exchange information by entanglement how would gravity communicate?

Does anyone know where I can find more information on Myopia (nearsightedness). I want to know why light rays focus in front of the retina and if this is genetic or not. This has to do with physics because of the light and how it moves. I need more detailed but simple information.

hi all, years ago when i first got into physics i imagined that many years down the line i would be starved for resources. I'm going to be a senior undergraduate next year and it seems to me that the further along i get in the field of physics the more information i come across. and not...

Hi ... I attached with this text letter the mechanica system diagram that including or working by Hydraulic unit ... Its for holding about 8 tons , Metal Sheet's Coil . So I asked about How To Choose The Suitable Pump For This System . Will Be Thankfull For Your Help ... And Also For...

I hope someone can point me to some information to assist resolving this apparent SR paradox. I have two gear wheels with an endless chain passing round them. The axles of the wheels are 100 chain_link_lengths apart, so we have 100 chain links along the top; 100 chain links along the bottom...

More Physics... A simple pendulum suspended in a rocket ship has a period T0. Assume that the rocket ship is near the Earth in a uniform gravitational field. Give ALL correct answers, I'm assuming T= 2pi(l/g)^.5 A) If the ship moves upward with a constant velocity, the period increases...

Problem: I have heard of a word(s) with the meaning: "instructions on how to find information", so that instead of telling someone a piece of information straight away, one tells how to find the information. For example: Someone asks, I want to eat a great cookie. The answerer gives not the...

In quantum systems/domain, the transporting of information from two locations, say A to B is the basis of all quantum connective logistic processes. What process, is available for the transport of information, without altering the information, surely if your moving information, you are...

1st of all - Hi everyone, this looks like a great resource, hopefully i'll be a frequent visitor! Anyway, the reason for this post is to findout if anyone knows of any texts concerning the more practical (design) side of hydraulic damping used in suspension systems. Im at uni in England at...

Hi everyone. I'm considering going to grad school for either economics or math. When researching economics grad schools online (at the big ivy leagues) I find pertinent information about what they look for on your transcript, specifically what classes to take as an undergraduate, etc. I find...

Hi, I'm doing some research into fly-by-wire system on aircraft and need some more information on actuators. I know that electrical signals are sent to the actuator from an onboard computer, but I'm not sure how the actuators then move the control surfaces. Do they use hydraulics? If so how do...

Ok guys, not sure how many people will know this hehe, but what exactly do the calorie ratings mean for foods? All i can tell is that its how much to heat up the mass... but what does it heat up to? 98.6? And why is it healthier to eat practically 3 feet of sandwhich from subway... say the...

With the completion of mapping the human genome what consequences will this have on humanity. Will we be able to engineer humans before birth or be able to look at several candidates and pick the best one? I am really curious about this subject. Sorry for my ignorance in biology.

Hey all. I'm looking for a good source of general information about specific human chromosomes, such as what % of the chromosome is composed of genes, telomeres and centromere region, and what % is silent. The resources I have found thus far (like Genome on the PubMed site) have had great...

Any information on piezoelectrics would be great. Paden Roder

http://www-agecon.ag.ohio-state.edu/class/AEDE680/Irwin/pdf/60.pdf

Hello, I would like second (and more) opinions on comments i received from a physicist in response to my observations on a certain experimental setup designed to make a particular point about information theory in the context of entropy. The experimental narrative is found on pages 9 &...

Hey, Where could i find some really good info and pictures on ''The Adrenaline Hormone''? As i have to do an assignment on it. Thanks

We know that the energy cannot be created or destroyed but can only be converted into another form. Does the same also applies to information. Is it possible to create the information out of nothing or destroy it completely without leaving a trace of it. This question is with regard to the...

Hello I would like to know what is the latest decay data (Nuclear Data Sheets) available for Eu-153 (Gd-153 EC decay), Xe131(I-131 decay) and Tm169 (Yb169 decay). what i could get is only that of 1998 ,1994 and 1991. This data is frm the nndc/ ensdf website. could anyone help me...

For those who would like some technical references, DOE Handbooks are available on line at: http://tis.eh.doe.gov/techstds/standard/standard.html Just click on the PDF link. Look for: DOE Fundamentals Handbook, Classical Physics, DOE-HDBK-1010-92 DOE Fundamentals Handbook...

X-ray energies increase with atomic number, Z. X-rays originate from photon emissions as electrons drop back into the K and L shells of atoms. Thus they have characteristic wavelengths. Hydrogen has the lowest energy X-rays (Ek=13.6 eV) which is the first ionzation potential. It has one...

"Information cannot travel faster than c" "If information could travel faster than c, we would loose causality" Just wandering - who came up with these and why? In other words: 1. Why can't information travel at some higher finite speed? 2. Why would we loose causality in that case? Note...

Here's a scenario I thought of a few days ago. I know there must be an easy explanation, but it hasn't come to me ... Bob and Alice (no Eve this time) are separated from each other by about a million miles, and they would like to communicate with each other without the five second delay of...

My grandpa was a smart kid, if he was shown something or told something once then he would never forget it. He told me a story about his birthday party when he was 8 years old. He said that when the cake was brought out, he just sat there and he never realized he should make a wish. Brain...

I am currently a freshman at rutgers university and I am planning to do a double major in Physics and Mathematics with a minor in Comp Sci. I am very much interested in the research fields of Quantum Information Theory and Quantum Computing and I was wondering if anybody could recommend a track...

Can anyone help me find information on the percolation threshold, i.e for when particle concentration is increased to a point when electrical pathways are created and resistance decreases by many orders, for metals loaded polymers. Cheers :smile: :-p :approve: :zzz: :blushing...

Information "Twin", loss Paradox? Lets say I have a powerful telescope that can resolve focus instantly, I place a precission mirror at a Earth location, and I am with the telescope onboard a craft that can accelerate to a great speed. At the back of the craft I line up the telescope to...

This thread is based on some reading I've done on decoherence (a lot of it by Zurek) and recent experiments involving decoherence and complementarity. One interesting item is the recent experiment by Anton Zeilinger and team involving C60 molecules interacting to produce and interference pattern...