Mitch explains the structure and numerical values of an AC sine wave and demonstrates measurements on altered sine waves using True RMS and averaging test instruments.
Check out the Taking Measure website and Mitch's book at takingmeasure.net - https://www.takingmeasure.net/
Mitch's Beginner's Guide to Electrical Test Instruments - 3+ hours of step-by-step electrical circuit and test instrument basics for students and novices is available to review and purchase through Taking Measures' Udemy link - https://www.udemy.com/course/the-beginners-guide-to-testing-electrical-circuits/?referralCode=DB3B896F6B23C4B2349B