Where do aliens come from? | #aboutaliens #amazingfacts #alien #facts #shorts (Hindi)

Where did the traveller Ibn Batuta come from?

Where did the traveller Ibn Batuta come from ?

Where does the signal in your cellphone come from?

Where does the signal to your TV set come from?

From where viscous force come about in moving liquids. Discuss the factors on which viscous drag of liquid depends.