I noticed that the ray diagram for the "how the compound microscope works" and "how the telescope works" is wrong in my government sanctioned physics textbook(and countless other books and websites!) The diagram printed was this- Name: Physics Standard XI Printed by: Maharastra State Board of Secondary and Higher Secondary Education Year:2011 Whereas the correct one is this(taken from www.schoolphysics.co.uk)- So i decided to spread some awareness about it by writing an open letter, but for that i need to know if its wrong only in India(where i stay) or other countries as well. What i need is people from around the world to post the picture of wrong diagrams(if any) in their physics textbooks. It has become a big problem with teachers teaching the students wrong things. Some have become so ignorant that even after i pointed out the mistakes to them they didn't listen to my argument and simply ignored me. Thanks a lot to whoever posts their pictures! Please mention the country name, grade, author(s), Textbook name, and all other relevant information.