Educational: Gaisen Sugamata se Sampeedit hoti hain, Lekin Drav Nahin

Gaisen Sugamata se Sampeedit hoti hain, Lekin Drav Nahin
Yah dikhata hai ki gaisen aasani se sampeedit hoti hai jabki taral padharth nhi hote hai.
via YouTube https://www.youtube.com/watch?v=G9uE9kgVo5s