ali ghanbari silver medal world physics olympiad mr. sina fathi silver medal world olympiad congratulations and happy physics thousands of times. his excellency mr. seyed mohammad mahdi mousavi, silver medalist of the world physics olympiad, mr. mehdi shirinbayan, silver medalist of the world physics olympiad, mr. shayan faiz eskoi, bronze medalist of the world physics olympiad. congratulations and be happy, be proud and successful , mr. parsa pardali behrouz , gold medal of the world computer olympiad, mr. amir hossein vahidi tabar, silver medal of the world computer olympiad . respected and dear families of these elites and these medal winners are also among us . give a special encouragement to the families. they work very hard at work. mrs. fatemeh tamhari, silver medalist of the world computer olympiad, mashallah. dear mr. sohail mohammad khani , the silver medal of the world computer olympiad and the world olympiad of astronomy and astrophysics, please give special encouragement to all dear ones, and mr. amir mahdi esmaili taheri,