You can see from Bibliography where this knowledge / definitions are coming from - mostly the old NL/Philips - Euro authors. Plus translation to English, some terms I never heard before.
You know old-fashioned College books, lots of atomic theory and complex Math, but God forbid that you can find any useful/practical circuits to build.
Moers` s book is a „journey" through authors experiments and measurements of various circuits that he tried to explain mathematically / theoretically. I think that he did a solid job there, good combination of DIY and Scientific approach.
But, I also found his writing / teaching style somewhat old fashioned, confusing and boring. But, that`s me - probably there`re some people out there who found this book very interesting and enjoyable...