Question

Compare and contrast the 3 sine wave pulses (below) and their respective FFT’s (fast fourier transforms)....

Compare and contrast the 3 sine wave pulses (below) and their respective FFT’s (fast fourier transforms). What is this exercise telling us?

a. A 'long wavelength' sine wave

b. A 'Medium wavelength' sine wave

c. A 'short wavelength' sine wave

Thanks in advance :)

Science   Advanced-Physics   
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Answer #1

The Fast Fourier transform is been done for a sine wave. From the diagrams below for different wavelengths we could say that the frequency of the peak increases with decrease in wavelength. Sine is an odd function and hence the peak occured is also not symmetric for the frequency.

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