How mixing two colors can create an entirely different color  (2:06)

How FFDs work  (2:16)

FFDs' two main properties  (2:12)

I hope to add more videos soon.  

These videos were created with the interactive Model of Color Vision shown below.  Unfortunately, Adobe and the major browsers stopped supporting Flash Player at the end of 2020.  Please see the Color Vision > Color Vision Model to get your own free executable copy of the model.