An instructor (Dr. Ansam Qassim Gadhban) ,who is a teaching staff at Madenat Elelem University College / Department of Medical Physic have participated in 2nd an international conference for “Pure and Applied Science (IHCIPAS)-2020” arranged by Ibn Al-Haitham College, University of Baghdad. The manuscript was entitled “Design high performance multilayers cold mirror” with other co-authors and this research will published in Scoups.