विज्ञान के उपहार पुस्तक का कुछ अंश : सबसे पहले दो पहिये वाले हाथ ठेले बने | फिर दो पहिये वाली गाड़ी बनी | इसमें एक तरफ दो पहिये लगे रहते थे | दूसरी तरफ से आदमी गाड़ी खींचता था | कई बार दूसरी तरफ जानवर जोत देते थे | बाद में गाड़ियों में दो से अधिक पहिये लगाए गये | इस तरह बड़ी गाड़ियों बनीं | इन पहियेदार गाड़ियों में घोड़े जाते गये | इससे चाल और बढ़ गयी ……….
Vigyan Ke Uphar PDF Pustak in Hindi Ka Kuch Ansh : 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…………..
Short Passage of Vigyan Ke Uphar Hindi PDF Book : 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…………..
