halachas of SOSSAIR in construction with a structure (e.g. floor, ceiling, wall, etc.);
Understanding the Concept of פסיק רישיה (P'sik Reisha): When an Allowed Action Causes a Forbidden Result with Two דרבנן. When Is One Allowed to...
Lowering the Strength of a Fan, Dimming the Lights, Lowering the Settings on a Heater or Refrigerator;