**If uncertainty Δx in the position is along x-axis then uncertainty in the position of momentum will also be measured along x-axis.**

**Key Points:**

**The uncertainty principle also applies for the same axis of position and momentum.**
**Like if Δx is along the y axis then Δp also must be along the same y axis.**
**The uncertainty principle also does not have any limitation for measuring instrument.**

**Heisenberg Uncertainty Principle Formula**

**The mathematical expression for the Heisenberg's uncertainty principle**

**Δ p. Δ x ∝ h/4p**

**By using the above equation, the calculated value of Δ p is the minimum value of Δ p for any particular value of Δ x. Similar the calculated value of Δ x also shows the minimum value of Δ x for any specific value of Δ p.**

**As Δp = m. Δ v,
**

So the equation becomes (m. Δ v). Δ x π h/4p

Or

(Δ v)(Δ x) ∝ h/4pm