Special Invited Lecture was delivered at Delhi College of Engineering by Prof. Ajoy K. Ghatak , Eminent Professor Of Physics , IITD on "Einstein And Special Theory Of Relativity" on 8th September,2009.



  Introduction to Prof. Ajoy Ghatak by Prof. R.K.Sinha,Faculty Advisor,SPIE-DCE Student Chapter
     
  Lecture by Prof. Ajoy K. Ghatak ,eminent Professor,IIT Delhi at Delhi College Of Engineering(Now Delhi Technological University).Part-1
     
  Lecture by Prof. Ajoy K. Ghatak ,eminent Professor,IIT Delhi at Delhi College Of Engineering(Now Delhi Technological University).Part-2
     
  Lecture by Prof. Ajoy K. Ghatak ,eminent Professor,IIT Delhi at Delhi College Of Engineering(Now Delhi Technological University).Part-3
     
  Lecture by Prof. Ajoy K. Ghatak ,eminent Professor,IIT Delhi at Delhi College Of Engineering(Now Delhi Technological University).Part-4








An optical illusion (also called a visual illusion) is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a percept that does not tally with a physical measurement of the stimulus source.