बिथांनि जेल - डायरिनि बे सावगारि आरो रकेतनि खाराथाइनि हिसाब खालामनाय सानखान्थिनि बुंफुरलुफोरखौ आबुं जाना थायो ।
His jail-diary is full of these maps and mathematical formulas calculating speed of rockets .