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K4604 - Electronics Fiber Optic Communications

Electronics Fiber Optic Communications
Item No. K4604

Electronics Fiber Optic Communications

Series: Show Me Science Advanced Technology
Item No: K4604
Length: 15 minutes
UPC: 709629046047
Copyright: 2013
CC: Yes
MARC Record: Yes
Language: English
Grade Level: 6-12
Age Range: 12-18
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SRP: $44.95
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Communications technology is everywhere. We send and receive information through televisions, internet, email, radio, text message and social media. This program goes into depth about how electronic communication has evolved over time. Whether using an old rotary phone or some new technology, there are basic principles behind each that many of us are unfamiliar with. Land line telephones send sound waves that are converted into electrical impulses that work with a series of switches and routing devices that open an electrical pathway to whomever you're calling. More commonly, cell phones operate by means of a modulated electromagnetic wave - basically a radio. These signals connect to an electronic communications network. Metropolitan areas are divided into small networks where antennas send and receive signals depending on the user's location.