Low-frequency electromagnetic radiation

1. What is dispersion?

2. What is the chief disadvantage of optical fiber as opposed to copper wiring?

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3. What light sources and sensors are used with optical fibers?

4. Can laser communication be used from a moving vehicle? Explain

1. What is the approximate conical angle that can be used with infrared technology?

2. What are the two broad categories of wireless communications?

3. Why might low-frequency electromagnetic radiation be used for communications? Explain.

4. If messages are sent from Europe to the United States using a GEO satellite, how long will it take for a message to be sent and a reply to be received?

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