02-Electromagnetic Fundamentals_student

02-Electromagnetic Fundamentals_student - Naval Science...

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Naval Science 330- Electromagnetic Fundamentals Capt Corbeill Marine Officer Instructor 294-0331 corbeill@iastate.edu
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NS330- Electromagnetic Fundamentals How does energy move? In waves
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NS330- Electromagnetic Fundamentals Traveling Wave Characteristics Frequency Wavelength Velocity Amplitude Period
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NS330- Electromagnetic Fundamentals Traveling Wave Characteristics Frequency (f)- Rate at which source disturbance oscillates through one complete cycle. Measured in hertz (Hz). f = 1Hz f = 2Hz f = 4Hz 1 sec 1 sec 1 sec Translation - Number of cycles per second
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NS330- Electromagnetic Fundamentals Traveling Wave Characteristics Wavelength ( λ ) – Distance between two identical points on adjacent waves or distance traveled by wave in one cycle. +a -a λ Y t λ = c/f
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NS330- Electromagnetic Fundamentals Freq vs Wavelength Inverse relationship. As frequency increases, wavelength decreases or vice versa. f = 1Hz f = 2Hz f = 4Hz
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NS330- Electromagnetic Fundamentals Traveling Wave Characteristics Velocity (c) – EM waves travel through air at speed of light. (c = 3 x 10 8 m/s)
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NS330- Electromagnetic Fundamentals +a -a Y t Traveling Wave Characteristics Amplitude - The maximum amount of energy of the wave. =A =A
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NS330- Electromagnetic Fundamentals Traveling Wave Characteristics Period- the time required to go one cycle. = = T T f=1/T f=1/T
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Phase φ Identical Waves shifted either ahead or behind due to distance separations or time delay. Pick one as a reference and determine phase
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02-Electromagnetic Fundamentals_student - Naval Science...

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