I remember fondly a college lab experiment where we had to design a circuit that modulated a signal on a carrier (basic FM modulator).
The prep for the lab included a paper running all the math predicting the outcome, that included fourier transforms.
The moment we hooked the circuit's output to an spectral analyzer was the first time I saw years of theoretical math resulting on something "tangible": the carrier signal's peak and +/- modulated peaks around it.
The prep for the lab included a paper running all the math predicting the outcome, that included fourier transforms.
The moment we hooked the circuit's output to an spectral analyzer was the first time I saw years of theoretical math resulting on something "tangible": the carrier signal's peak and +/- modulated peaks around it.