This video lecture from Atomic Structure (F.Sc. First Year Chemistry) covers the concept of uncertainty by Heisenberg which said that both position and the momentum of the moving electron cannot be determined exactly at the same time. Lessening the uncertainty in one quantity will increase the uncertainty in the other and vice versa. Find more e-learning material and educational video lectures in Urdu at maktab.pk. These videos are free to use for promotional and commercial purpose by keeping the credits to Maktab.