NeoFermi Examples
Worked Fermi estimates rendered from markdown notebooks. Try your own in the notebook or the editor.
How Much Does Earth's Atmosphere Weigh?
A classic physics Fermi problem combining pressure, area, and mass.
Cosmic Distances and Scale
How vast is the universe? Let's use our astronomical constants to build intuition.
How Much Power Do Data Centers Use?
Estimating global data center energy consumption.
Estimating the Earth's Circumference
A classic Fermi estimation using what we know about time zones and the United States.
Comparing Energy Storage Technologies
How do different energy storage methods compare? Let's use energy density constants to explore this.
The World's Gold
How big is all the gold ever mined? Let's find out using material densities.
How Many Golf Balls Fit in a School Bus?
A popular interview question that tests spatial reasoning.
How Many Times Does Your Heart Beat in a Lifetime?
A simple but profound Fermi problem.
Human Power and Metabolism
How much power does a human generate? Can you power your home by exercising?
How Many Piano Tuners in Chicago?
The classic Fermi problem, originally attributed to Enrico Fermi himself.
Surface Gravity on Different Planets
How much would you weigh on other planets? Let's calculate surface gravity using planetary masses and radii.
How Many Seconds in a Year?
A quick sanity check that everyone should know.