Enter the Planck’s constant and the uncertainty in position (m) into the Calculator. The calculator will evaluate the Minimum Uncertainty. 

Minimum Uncertainty Formula

up = h/(4*pi)/ ux


  • up is the Minimum Uncertainty ((momentum uncertainty, m))
  • h is the Planck’s constant
  • ux is the uncertainty in position (m)

To calculate Minimum Uncertainty, divide Planck’s constant by 4 times pi, then divide by the uncertainty in position.

How to Calculate Minimum Uncertainty?

The following steps outline how to calculate the Minimum Uncertainty.

  1. First, determine the Planck’s constant. 
  2. Next, determine the uncertainty in position (m). 
  3. Next, gather the formula from above = up = h/(4*pi)/ ux.
  4. Finally, calculate the Minimum Uncertainty.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Planck’s constant = 23412

uncertainty in position (m) = 252345

Frequently Asked Questions

What is Planck’s constant and why is it important in quantum mechanics?

Planck’s constant is a fundamental physical constant that represents the quantum of electromagnetic action that links the amount of energy a photon carries with the frequency of its electromagnetic wave. It is crucial in quantum mechanics as it underpins the principles of quantum physics, illustrating the quantized nature of energy in the microscopic world.

How does the uncertainty principle impact the field of physics?

The uncertainty principle, introduced by Werner Heisenberg, states that the more precisely the position of some particle is determined, the less precisely its momentum can be known, and vice versa. This principle challenges classical physics and introduces a fundamental limit to what can be known about the properties of particles, thus reshaping our understanding of the microscopic world.

Can you explain what momentum uncertainty is?

Momentum uncertainty refers to the degree of uncertainty or indeterminacy in the momentum of a particle. According to quantum mechanics, it is impossible to precisely measure both the position and momentum of a particle simultaneously. The momentum uncertainty is a key aspect of the Heisenberg Uncertainty Principle.

Why is the formula for calculating minimum uncertainty important?

The formula for calculating minimum uncertainty is important because it quantifies the fundamental limits of measurement in quantum mechanics. It provides a mathematical basis for understanding the inherent uncertainties in measuring the position and momentum of particles, which is crucial for experiments and interpretations in quantum physics.