Explain Werner Heisenberg's uncertainty principle (qualitative).

Explanation

Heisenberg.s uncertainty principle states that, it is not possible to measure both the position and the momentum of an electron or any particle exactly at the same time. There is always some uncertainty `(Deltax)` in the specification of positron and some uncertainty in the linear momentum `(Deltap)`.
i.e., `Deltax.Deltap approx h//2pi=h" where "Deltax ne 0 and Deltap ne 0`
The matter wave associated with electron is not extended all over space. Instead, it is a wave packet extending, over some finite region of space. However, a wave packet of finite extension does not have a single wavelength. A wave packet consists of waves spread around some central wavelength

The matter wave corresponding to a definite momentum of an electron, extends all over space