ACI’s electrostatic filter has a low .12 initial resistance and can not be too restrictive due to the design which also allows the filter to be cleaned like new every time. Electrostatic filters with a .20 resistance or greater can restrict the airflow of your system. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.