Fermi Estimation for Physical Quantities

Fermi estimation helps physicists, scientists, and engineers make rough calculations for physical quantities. These estimates are also called guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. Enrico Fermi was known for making these kinds of estimates with surprising pr...

Problems involving the estimation of physical quantities are often referred to as a Fermi problem, named after the physicist Enrico Fermi, who is known for making quick, rough estimates based on simple calculations and assumptions.

The determination of the number of blades of grass on a soccer field is an example of a Fermi problem.