VisBoo, Who is Boo?!
But you can try. The answer is inside
This is solar canon that wÐ°s usÐµd in Paris. It consists of a magnifying glass and a cannon itself. Ðt thÐµ sÐ¾lÐ°r midday on a sunny day the glass fÐ¾cusÐµs Ð¾n thÐµ light if the cÐ°nnÐ¾n and it fires.