__Dual Behaviour of Matter __

__Dual Behaviour of Matter__

=> Explain by de Broglie (1924)

=> He explain that matter also behave like radiation and exhibit dual behavior means both like particle and wave like properties .

=>

*Relation* m = mass of particle ,

v = velocity of particle,

p = momentum

__Heisenberg’s Uncertainty Principle__

__Heisenberg’s Uncertainty Principle__

Given by Werner Heisenberg (1927)

He explain that it is impossible to determine simultaneously the exact positive and exact momentum (or velocity) of an electron

*Mathematical explanation*

Where, Dx= uncertainty in position

DV_{x }= uncertainty in velocity or momentum