Skip navigation
No more
Know more

Skywriters wrote the digits of pi above SXSW, and it was awesome

In anticipation of Pi Day, a squadron of skywriters flew over the South By Southwest festival in Austin, Tex. Thursday evening, writing out a decimal approximation of the ratio of the circumference of a circle to its diameter.

The planes were representing AirSign, an aerial advertising agency. Click below to learn how Archimedes developed the first approximation of pi.

Max Ehrenfreund | March 14, 2014 at 8:49 am
Know more: "It's kind of the most famous number in math"
No more
Know more
What California would look like if the world’s ice sheets melt
Ana Swanson
No more
Know more
The most searched comfort foods last winter, mapped
Ana Swanson
ADVERTISEMENT
No more
Know more
A lot of Americans think that Islam is at odds with their values
Ana Swanson
No more
Know more
The American cities that are growing the fastest, mapped in 3D
Ana Swanson
No more
Know more
The states that eat the most fruits and veggies
Ana Swanson
No more
Know more
How State Department allowances vary around the world
Ana Swanson
No more
Know more
The states where more babies are born prematurely
Ana Swanson
No more
Know more
What the Republican candidates would have earned in minimum wage when they were teens
Ana Swanson
No more
Know more
Fantastical designs from the frontier of subway maps
Ana Swanson
No more
Know more
Popular movies, reduced solely to their colors
Ana Swanson
No more
Know more
Why CEOs are more susceptible to automation than landscapers
Ana Swanson