Communications Definition and 69 Threads

Is it possible to move an entangled particle, without disrupting the wave function, to create a communication signal?

Homework Statement Telephone connection between Europe and North America can be carried by cable or by the use of a geosynchronous communication satellite. Estimate the time it takes for a signal to travel 8000 km via cable, assuming the speed is close to the speed of light. How does this...

Hey guys, I'm a student in electrical engineering and I'm interested in learning about wireless communications and RF electronics but I don't really know where to start. I've taken three semesters of engineering electromagnetics but I still wouldn't say that I know much of anything about...

How do the domestic Energy meters communicate with the power utility centers (Using the Power Lines) ?? What kind of hardware do they use? Please help me out :)

Hi, I am completing the study of telecommunications. As I've lost some lecture notes and I like to keep references on my bookshelf I am looking for a good book about Electromagnetism, electromagnetic radiation and radio communications. From the comprehensive online offer it is not easy to...

Homework Statement 'Briefly explain the importance of skin depth in the context of radio communications.' Homework Equations The Attempt at a Solution A guess would be that, the frequencies of the radio transmissions should be kept small so that the signal has a large skin depth...

I have always wondered about this. When we went to the moon how did we communicate back to earth? On the same note, what are the ways to communicate from the outer space? i.e from moon, mars, pluto? If we managed to visit a place 20 light years away, how could we communicate back to Earth...

Can you tell me about your career in Signal/Image Processing, Communications, or Intelligent systems? I would like to know what a career in these industries is like with and without a phd. Also, what skills are needed? I'm sure mathematics is one but to what level? Thank you

Hey guys, I'm a second year Electronics Engineering undergrad student and this semester I'm studying a subject called Communications Engineering 1, which is basically an introduction to Digital and Analogue Communications. I'm really stuck so far on the Analogue stuff because our lecture...

I have a odds and ends question for anyone who wants to share knowledge. I just got done with a project doing serial port programming, and I want to take what I learned and expand that. Is there any environment that is more or less a sandbox for USB communications? If you're familiar with...

Hey! I know that with option A I have an always-open-line and no problems in communication... What I would like to know is, if option B will work when the ground is the building ground? Liad.:)

Hi, it would be great if someone could give me a conceptual explanation of how a simple circuit of fiber optics communication works, since this is where the world is, in a communications sense.

Ronja On their website, they provide plans for a few different models of a wireless network device. The plans include parts list, instructions, pictures/diagrams etc., and are licensed under the GNU Free Documentaton License. Limitations of the device are that it requires a direct...

Hey guys, I'm taking a Digital Communications class and we are using the book "Digital Communications" by Bernard Sklar. I have heard from a few people that this book is not as mathematically rigorous as some of the other books in the field and therefore does not provide a deep understanding of...

Hey all. I know it's been a long time since I have posted, but I just finished reading Entanglement: The Greatest Mystery in Physics, by Amir D. Aczel and I had a question concerning the conclusion of the work. He made the claim that GR was not violated by entanglement since messages could...

Hi i want to learn about the K factor that is used in the wireless communications and i used to denote the curvature of earth... Do u know where i can find information about it? Any good links about wireless communications aspects...such as antennas, radiation ...et.c.

Concast & Dial Up LAN communications -- Security Exploit While I was switching ISP's earlier today (from Comcast to DLS) the DSL representative told me of some sort of a security hole in Comcasts service. She said that Comcast and Dial up are on some sort of a LAN (In your physical...

http://www.cnn.com/2005/TECH/space/03/23/craigslist.space/index.html i.e., number of star systems reached = zero! I think I’d prefer first contact to be an “elite” message rather than random babbling. :rolleyes:

What is the best way of viewing data sent by a modem through a telephone line: as a changing voltage in terms of time or as moving electrical signals? In my Networking course exchanged bits, bytes, and packets, are portrayed as waves (current changing with distance) that propagate through the wires.