Right , thanks, but .... 600 are last .... there is no follow up or continue of this topic ... 600 video shows some intrigue moments in the end with promise to explain it later , and .... nothing ...Yes 27 years pass .... but I'm curious if I have a right answer , that kinda itchy
UPD:
EEVblog #528 - Opamp Input Noise Voltage Tutorial
great , but didn't cover input current noise, and how resistor affected noise. it would be interesting as well
UPD2: does noise (voltage and current ) are different between inverting and non-inverting , single and dual power ?