विज्ञान के प्रयोग : कीथ वारेन द्वारा हिन्दी पीडीएफ़ पुस्तक – (बच्चों की पुस्तक) | Vigyan Ke Prayog : by Kith Varen Hindi PDF Book (Children’s Book)
Pustak Ka Vivaran : Bachchon, pani ke bade gol matake ka ek toota hua tukada laon. Aisa tukada chhanto jo maachis kee dibiya se lagabhag aadhe aakaar kiya ho. Yah tukada neeche se oopar se lagabhag samatal hai. lekin yah tukada to gol bartan ka hai, to phir yah samatal kaise ho………….
Description about eBook : Kids bring a broken piece of big round spices of water. Trim a piece which is roughly half the size of the match box. This piece is nearly flat from top to bottom. But this piece is of round utensil, then how can it be flat?…………..
