Dear sir, I dont have to say any thing about your excellent work on physics, you know I am as a physics teacher, enjoying your hard work with appreciation. The time you devote for this job is so expensive. For us its very simple to enjoy it you know. But I know that with our satisfaction , you are satisfied. Not only me , my students are also highly appreciating your excellent task. I want you to continue with this to help the teacher as well as the student, as they are in need of it. Behalf of my students highly I appreciate your devotion ,sharing of knowledge, with the idea of helping the others. Again I highly apprecite your task, and pray for you to develope new ideas. Thank you sir. Take care Calistes.