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“Riding the Waves”. Ross Elam Kitrail Hargrove Richie Francis Matthew Steffen. Objective. The student will be able to explain Wireless Technology and identify satellite communication systems. P.O.D.
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“Riding the Waves” Ross Elam Kitrail Hargrove Richie Francis Matthew Steffen
Objective • The student will be able to explain Wireless Technology and identify satellite communication systems.
P.O.D. • The atomic weight of Carbon is 12.01 and the atomic weight of Oxygen is 15.00. What is the total weight of Carbon Dioxide? Answer: 42.01
Critical Thinking • How do you use Wireless Technology in your everyday life?
Key Terms • Electromagnetic radiation – waves of energy. • Wavelength – one complete wave. • Frequency – number of complete wave cycles that occur in a unit of time. (measured in hertz) • Amplitude - the maximum displacement of a periodic wave.
What is “Wi-Fi?” • Wi-Fi stands for Wireless Fidelity. • Each access point is a radio transmitter receiver that converts radio waves into electrical signals and sends the signal to the wired part of the network.
How it really works… • Each device communicates using a specific frequency, which is why they usually don’t interfere with each other.
How Your Cell Phone Works • Sound waves from your voice are encoded into electrical signals. • These signals are transmitted from your phone to the radio tower. • The tower sends the signals to an Earthbound transmission station.
How Your Cell Phone Works • Once the message is received, the satellite relays that signal as a 4-GHz signal. • A second Earth station receives the signals and converts the radio signal back to an electrical signal. • The signal is sent by a radio tower to the recipient of the call where her telephone decodes the electrical into sound waves they can hear. • At the station, the transmitter translates the encoded electrical signal into 6-GHz radio waves and attaches a receiving address for the second Earth station. • The 6-GHz is sent to the satellite which has a receiver that “listens” at that frequency for Earth station transmissions.