on December 9, 2019, Dr. Rifa J. El-Khozondar and Prof. Hala J. El-Khozondar visited Basheer Alrais female high school. Dr. Rifa gave a presentation about how to make an inverter. The lecture give a brief about the theory behind the inverter and then the process of making one. Students are given a chance to ask questions. the teacher and the headmistress who attended the lecture express their appreciation and thanks for the clarified lecture.