विज्ञान के उपहार : मीर नजाबत अली द्वारा हिंदी पीडीऍफ़ पुस्तक – विज्ञान | Vigyan Ke Uphar : by Mir Najabat Ali Hindi PDF Book – Science (Vigyan)
Pustak Ka Vivaran : Sabse Pahale do Pahiye Vale hath thele bane. Phir do Pahiye Vali Gadi bani . Isamen Ek taraph do Pahiye Lage Rahate the . Dusari Taraph se Adami Gadi kheenchata tha. kayi bar Dusari Taraph Janavar Jot dete the. Bad Mein Gadiyon mein do se Adhik Pahiye Lagaye Gaye. Is Tarah badi Gadiyon bani. In Pahiyedar Gadiyon mein Ghode jate gaye. Isase Chal aur badh Gayi…………..
Description about eBook : First of all, two wheels were hand-held. Then a two wheeled car was made. There were two wheels on one side. On the other hand, the man used to pull the car. Many times the animals kept on the other side. Later, more than two wheels were mounted in trains. Large trains were built like this. The horses went on these wheels. This moves up and down…………..