Harmonic Function Theory

"how are harmonics generated? The signal is just "on" or "off", how are there first, third, and fifth harmonics and why do they get weaker?" // Although not a satisfactory answer, …. Moreover, Can 3rd order intercept point be used to extrapolate the power of 3rd harmonic or 3rd order intermodulation distortion at an arbitrary input power?. In related context, According to the Fourier series, when AC waves of different frequencies are added to the fundamental frequency, we can obtain waves such as square and sawtooth. Research indicates, For a fully symmetric waveform the even harmonics should cancel out but any departure from symmetry will cause the even harmonics to become present. These findings regarding Harmonic Function Theory provide comprehensive context for understanding this subject.