Physics Investigatory Project Topics on Current Electricity To Study the Moving Coil Galvanometer. What is investigatory project in physics? Young’s light-interference experiment (1801).Newton’s decomposition of sunlight with a prism (1665-1666).Galileo’s experiment on falling bodies (1600s).Young’s double-slit experiment applied to the interference of single electrons.What are the top 10 science fair projects? 24 What is the hardest question in physics? What can I make for my physics project?