रॉकेट और अन्तरिक्ष यान : जॉन डब्ल्यू आर. टेलर द्वारा हिंदी पीडीऍफ़ पुस्तक – विज्ञान | Rocket Aur Antariksh Yan : by John W. R. Taylor Hindi PDF Book – Science (Vigyan)
Pustak Ka Vivaran : Ham pahale hi yah bata de ki koi bhi jet-injan athava Rocket usake peechhe ki or ki hava ke viruddh usaki nikas gaison (exhaust gases) ke dab se aage nahi dhakela jata hai. Yadi aisa hota to rocket kabhi bhi antariksh mein kam nahi kar sakata, kyoki antariksh mein use vipareet disha mein dhakelane ke liye hava nahin hoti hai ………..
Description about eBook : Let us know in advance that no jet-engine or rocket is pushed forward against the air behind it by the pressure of its exhaust gases. If this happens, the rocket can never work in space, because there is no air in space to push it in the opposite direction ……….
